Werner Würz

Experimentelle Sichtbarmachung von Strömungen
Sommersemester, Mi 11:30h - 12:15h

Strömungsversuchs- und Messtechnik
Wintersemester, Mi: 14:00h - 15:30h

Persönliche Daten

Geburtsdatum
1959

Adresse
Institut für Aerodynamik und Gasdynamik
Pfaffenwaldring 21
70550 Stuttgart

Telefon
+49 (0711) 685-63470 

Fax
+49 (0711) 685-60211 

Internet home page
http://www.iag.uni-stuttgart.de/laminarwindkanal

Education, Academic Degrees and Titles 

• 1978-1986
  Undergraduate study, University of Stuttgart,
  'Aerospace Engineering'
• 1986
  Dipl.-Ing., University of Stuttgart
  Thesis title: 'Design, construction and test of an experimental set-up for towing tests with wind turbine models'
  
• 1995
  Dr.-Ing., University of Stuttgart, Institute of Aerodynamics and Gas Dynamics (IAG),
  Dissertation title: 'Hot wire measurements with respect to laminar-turbulent transition in attached and separated boundary layers and comparison to Linear Stability Theory and empirical transition criteria'
  
  

Employment History

1986-1995
Junior Research Scientist at IAG, Laminar Wind Tunnel, Stuttgart

1995-present
Leading Research Scientist at IAG, Head of the working group 'Laminar Wind Tunnel'

Professional Activities
Current Fields of Interest

Key words: wind tunnel testing, viscous fluid mechanics, boundary layer flows, subsonic speeds, laminar flow receptivity, laminar flow instability, laminar-turbulent transition, airfoil design, aero-acoustics
Experimental studies of various stages of boundary layer transition. Receptivity characteristics of 2D boundary layers (with and without pressure gradients) to 3D external perturbations (roughness, vibrations, acoustics, turbulence, etc.). Stability characteristics of 2D boundary layers with respect to traveling 2D and 3D instability modes. Weakly nonlinear interactions of instability modes in laminar boundary layers.
Boundary layer induced noise on airfoils, development of aero-acoustic measurement procedures for non anechoic wind tunnels. Investigation of turbulence properties relevant for acoustic radiation.
Airfoil design for various applications, incl. the high performance sailplanes Arcus and Ventus-3 (Schempp-Hirth). Wind tunnel testing for third party companies.

• Lecture on "Flow Visualization" at Stuttgart University, 2000 - present
• Lecture on "Wind Tunnel Measurement Technique" at Stuttgart University, 2006 - present
• Research advisor of several graduate and 2 postgraduate students at Stuttgart University
• Supervision of PHD candidates:
  • S. Herr, 2003: Experimental Investigation of Airfoil Boundary-Layer Receptivity and a Method for the Characterization of the Relevant Free-Stream Disturbances
  • D. Sartorius, 2007: Experimental Investigation of Weakly Nonlinear Interactions of Instability Waves in a Non Self-Similar Boundary Layer on an Airfoil, DGLR-Preis 2008 der Zeppelin-Stiftung der Stadt Friedrichshafen
  • I. B. de Paula, 2007: Influence of an isolated high aspect ratio roughness on a boundary layer, University of Sao Paulo, USP, Brazil
  • A. Herrig, 2011: Validation and Application of a Hot-Wire based Method for Trailing-Edge Noise Measurements on Airfoils
  • B. Plogmann, 2015: Experimental investigations on roughness initiated instability and transition in airfoil boundary layers
  • M. Werner, 2017: Experimental Study on Tonal Self-Noise Generation by Aeroacoustic Feedback on a Side Mirror, Dissertationspreis der Friedrich und Elisabeth Boysen Stiftung, 2018
  • J. Romblad, 2023: Experiments on the laminar to turbulent transition at unsteady inflow conditions
  • M. Greiner, 2024: Experiments on laminar separation bubbles under inflow conditions of atmospheric turbulence

• Althaus D., Würz W.: Experimental Investigation of Laminar Separation Bubbles, Gersten K. (Ed.), Physics of Separated Flows - Numerical, Experimental and Theoretical Aspects, NNFM, Vol.40, Vieweg-Verlag Wiesbaden, 1993, DOI: 10.1007/978-3-663-13986-7_13
• Würz W., Wagner S.: Experimental Investigations of Transition Development in Attached Boundary Layers and Laminar Separation Bubbles, Körner H., Hilbig R. (Eds.), New Results in Numerical and Experimental Fluid Mechanics, NNFM, Vol.60, Vieweg-Verlag Wiesbaden, 1997, DOI: 10.1007/978-3-322-86573-1_52
• Würz W., Herr S., Wagner S., Kachanov Y.S.: Experimental Investigations on 3D Acoustic Receptivity of a Laminar Boundary Layer in the Presence of Surface Non-Uniformities, Nitsche W., Heinemann H.J., Hilbig R. (Eds.), New Results in Numerical and Experimental Fluid Mechanics II, NNFM, Vol.72, Vieweg-Verlag Wiesbaden, 1999,
  DOI: 10.1007/978-3-663-10901-3_68
• Würz W., Herr S., Wörner A., Rist U., Wagner S., Kachanov Y.S.: Study of 3D Wall Roughness Acoustic Receptivity on an Airfoil, Fasel H., Saric W. (Eds.), Laminar-Turbulent Transition, proc. of the IUTAM Symposium Sedona, Az./USA, September 13-17, 1999, pp. 91-96, Springer Verlag Berlin, 2000, DOI: 10.1007/978-3-662-03997-7_11
• Lutz Th., Würz W., Wagner S.: Numerical Optimization and Wind-Tunnel Testing of Low Reynolds-Number Airfoils, Conference on Fixed, Flapping and Rotary Wing Vehicles at very Low Reynolds Numbers, Notre Dame, Indiana, 5.-7.6.2000, published in: Thomas J. Mueller (ed.): Fixed and Flapping Wing Aerodynamics for Micro Air Vehicle Applications, Vol. 195, AIAA 2001, DOI: 10.2514/5.9781600866654.0169.0190
• Herr S., Wörner A., Würz W., Rist U., Wagner S.: Experimental/Numerical Investigation of the Influence of a Pressure Gradient on Acoustic Roughness Receptivity in the Boundary Layer of a 2D Airfoil, 12. AGSTAB Fachsymposium Stuttgart 2000, Wagner S., Rist U., Heinemann H.J., Hilbig H. (Eds.), New Results in Numerical and Experimental Fluid Mechanics III, NNFM, Vol.77, Springer-Verlag Berlin, 2002,
  DOI: 10.1007/978-3-540-45466-3
• Herr S., Würz W., Wagner S.: Experimental investigation of local vortex roughness receptivity of a boundary layer on an airfoil, 13.DGLR/AG-STAB Fach-Symposium München, 12.-14.11.2002, New Results in Numerical and Experimental Fluid Mechanics III, NNFM, Springer-Verlag Berlin,
  DOI: 10.1007/978-3-540-39604-8
• Würz W., Herr S., Wörner A., Rist U., Wagner S., Kachanov Y.S.: Three-Dimensional Acoustic-Roughness Receptivity of a Boundary Layer on an Airfoil. Experiment and DNS, Journal of Fluid Mechanics, vol.468, pp1-29, 2003, DOI: 10.1017/S0022112002003348
• Herr S., Würz W., Wörner A., Rist U., Wagner S., Ivanov A., Kachanov Y.S.: Systematic investigations of 3D acoustic receptivity with respect to steady and unsteady disturbances. Experiment and DNS, Wagner S., Kloker M., Rist U.(Eds.), Recent Results in Laminar-Turbulent Transition - Selected Numerical and Experimental Contributions from the DFG-Verbundschwerpunktprogramm "Transition" in Germany, NNFM, Vol.86, pp.75-90, Springer-Verlag Heidelberg, 2003,
  DOI: 10.1007/978-3-540-45060-3_7
• Ivanov A.V., Würz W., Herr S., Wagner S., Kachanov Y.S.: Experimental investigation of 3D acoustic receptivity of an airfoil boundary layer due to surface vibrations, European Journal of Mechanics -B/Fluids, 24, pp621-641, 2005, DOI: 10.1016/j.euromechflu.2004.12.004
• de Paula I.B., Würz W., Medeiros M.A.F.: Experimental Study of a Tollmien-Schlichting wave interacting with a shallow 3-D roughness element, Journal of Turbulence Volume 9 N 7 (2008) pp.1-23, DOI: 10.1080/14685240701790706
• Kamruzzaman M., Lutz Th., Ivanov A., Herrig A., Würz W., Krämer E.: Evaluation of Measured Anisotropic Turbulence Two-point Correlation Data for the Accurate Prediction of the Turbulence Noise Sources, 15th AIAA/CEAS Aeroacoustics Conference, Miami, USA, 11-13 May, 2009, AIAA Paper 2009-3313-818
• de Paula I.B., Würz W., Medeiros M.A.F.: The effect of a single three-dimensional roughness element on the boundary layer transition . In: Schlatter P., Henningson D. (eds) Seventh IUTAM Symposium on Laminar-Turbulent Transition. IUTAM Bookseries, vol 18. Springer, Dordrecht. 2010, DOI: 10.1007/978-90-481-3723-7_96
• Schreyer A.M., Würz W., Krämer E., Talamelli A., Alfredsson H.: Experimental Flow Studies on Separation and Reattachment in the Vicinity of Sharp, Wedge Shaped Leading Edges at Low Reynolds Numbers, A. Dillmann et al. (Eds.): Numerical & Experimental Fluid Mechanics VII, NNFM 112, pp. 273- 280, Springer-Verlag Berlin Heidelberg 2010, DOI: 10.1007/978-3-642-14243-7_34
• de Paula I.B., Würz W., Krämer E., Borodulin V.I., Kachanov Y.S.: Introduction of initial seeds for subharmonic resonance by modulation of T-S waves in an airfoil boundary layer , in New Results in Numerical and Experimental Fluid Mechanics VIII, Contributions of the 17th STAB/DGLR Symposium Berlin, Germany 2010, (Eds) Dillmann A., Heller G., Kreplin H.P., Nitsche W., Peltzer I., NNFM 121, Springer; 2013 Edition, ISBN 978-3642356797, DOI: 10.1007/978-3-642-35680-3_30
• Cerretelli C., Gharaibah E., Toplack G., Gupta A., Würz W.: Unsteady Separation Control for Wind Turbine Applications at Full Scale Reynolds Number, AIAA JOURNAL Vol. 48, No. 7, July 2010, DOI: 10.2514/6.2009-380
• Herrig A., Kamruzzaman M., Würz W., Wagner S.: Broadband Airfoil Trailing-Edge Noise Prediction from Measured Surface Pressures and Spanwise Length Scales, Int. Journ. of Aeroacoustics, 12(1-2), pp. 53-82 June 2013, DOI: 10.1260/1475-472X.12.1-2.53
• Kamruzzaman M., Herrig A., Lutz Th., Würz W., Krämer E., Wagner S.: Comprehensive Evaluation and Assessment of Trailing Edge Noise Prediction Based on Dedicated Measurements, Noise Control Engineering Journal (NCEJ), 59(1), pp. 54-67 · January 2011, DOI: 10.3397/1.3531794
• Kamruzzaman M., Lutz Th., Würz W., Shen W.Z., Zhu W.J., Hansen M.O.L., Bertagnolio F., Madsen H.Aa.: Validations and improvements of airfoil trailing-edge noise prediction models using detailed experimental data, Wind Energ. 2012; 15:45–61, Nov. 2011, DOI: 10.1002/we.505
• Würz W., Sartorius D., Kloker M., Borodulin V. I., Kachanov Y. S., Smorodsky B.V.: Nonlinear instabilities of a non-self-similar boundary layer on an airfoil: experiments, DNS, and theory, European Journal of Mechanics / B Fluids 31(2012)102-128, DOI: 10.1016/j.euromechflu.2011.07.006
• Würz W., Sartorius D., Kloker M., Borodulin V. I., Kachanov Y. S., Smorodsky B.V.: Detuned resonances of Tollmien-Schlichting waves in an airfoil boundary layer: Experiment, theory, and direct numerical simulation, Phys. Fluids 24, 094103 (2012), DOI: 10.1063/1.4751246
• Plogmann B., Würz W. and Krämer E. : Interaction of a cylindrical roughness element and a two-dimensional TS-Wave, in: New results in numerical and experimental fluid mechanics IX, Contributions to the 18th STAB/DGLR symposium, Stuttgart 2012, NNFM 124, DOI: 10.1007/978-3-319-03158-3_17
• Plogmann B., Würz W., Krämer E.: Interaction of a Laminar Boundary Layer with a Cylindrical Roughness Element near an Airfoil Leading Edge, AIAA Paper 2012-3077, 42nd AIAA Fluid Dynamics Conference and Exhibit, New Orleans, Louisiana, June 25-28, 2012,
  DOI: 10.2514/6.2012-3077
• Plogmann B., Herrig A. Würz W.: Experimental investigations of a trailing edge noise feedback mechanism on a NACA 0012 airfoil, Experiments in Fluids, Volume 54, Issue 5, 2013, DOI: 10.1007/s00348-013-1480-z
• Plogmann B., Würz W. : Aeroacoustic measurements on a NACA 0012 applying the Coherent Particle Velocity method, Experiments in Fluids, Volume 54, Issue 7, 2013, DOI: 10.1007/s00348-013-1556-9
• de Paula I.B., Würz W., Krämer E., Borodulin V.I., Kachanov Y.S. : Weakly nonlinear stages of boundary-layer transition initiated by modulated Tollmien-Schlichting waves, J. Fluid Mech., Volume 732, pp. 571-615, 2013, DOI: 10.1017/jfm.2013.420
• Herrig A., Kamruzzaman M., Würz W., Wagner S.: Broadband Airfoil Trailing-edge Noise Prediction from Measured Surface Pressures and Spanwise Length Scales, Int. Journal of Aeroacoustics 12, No.1+2, pp.53-82, 2013, DOI: 10.1260/1475-472X.12.1-2.53
• Plogmann B., Würz W., Krämer E.: On the disturbance evolution downstream of a cylindrical roughness element, Journal of Fluid Mechanics, vol. 758, pp. 238-286, 2014, DOI: 10.1017/jfm.2014.499
• Plogmann B., Würz W., Krämer E.: Interaction of a Cylindrical Roughness Element and a Two-Dimensional TS-Wave, New Results of Numerical and Experimental Fluid Mechanics IX, pp.163-172, 2014, DOI: 10.1007/978-3-319-03158-3
• Plogmann B., Würz W., Krämer E.: Transitional flow in the wake of a moderate to large height cylindrical roughness element, Experiments in Fluids, Volume 56, Issue 12, 2015, DOI: 10.1007/s00348-015-2069-5
• Plogmann B., Würz W., Krämer E.: Nonlinear Disturbance Evolution Downstream of a Medium Height Roughness Element, In: Dillmann A., Heller G., Krämer E., Wagner C., Breitsamter C. (eds) New Results in Numerical and Experimental Fluid Mechanics X. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 132. Springer, Cham., DOI: 10.1007/978-3-319-27279-5_22
• Werner M., Würz W., Krämer E.: Experimental investigation of an aeroacoustic feedback mechanism on a two-dimensional side mirror model, Journal of Sound and Vibration, Vol. 387, pp.79–95, 2017, DOI: 10.1016/j.jsv.2016.10.012
• Werner M., Würz W., Krämer E.: Experimental Investigations of Tonal Noise on a Vehicle Side Mirror, New Results of Numerical and Experimental Fluid Mechanics X, pp.777-787, 2016, DOI: 10.1007/978-3-319-27279-5_68
• Werner M., Würz W., Krämer E.: Experimental Investigation of the Tonal Self-Noise Emission of a Vehicle Side Mirror, AIAA Journal, Vol. 55, No. 5, pp. 1673-1680, 2017, DOI: 10.2514/1.J055513
• de Paula I.B., Würz W., Mendonca M.T., Medeiros M.A.F.: Interaction of instability waves and a three-dimensional roughness element in a boundary layer, J. Fluid Mech., vol. 824, pp. 624-660, 2017, DOI: 10.1017/jfm.2017.362
• Lemarechal J., Costantini M., Klein C., Kloker M.J., Würz W., Kurz H.B.E., Schaber S.:
  Investigation of Stationary-Crossflow-Instability Induced Transition with Temperature-Sensitive-Paint,
  5th International Conference on Experimental Fluid Mechanics, Munich, 2.-4.7.2018, in: Experimental Thermal and Fluid Science, Elsevier, 2019, DOI: 10.1016/j.expthermflusci.2019.109848, 06/2019
• Romblad J., Ohno D., Nemitz T., Würz W., Krämer E.: Laminar to Turbulent Transition due to unsteady Inflow Conditions: Wind Tunnel Experiments at increased Turbulent Levels, Deutscher Luft- und Raumfahrtkongress 2018, Friedrichshafen, 04.09.-06.09.2018, DGLR - Lilienthal-Oberth e.V., Bonn, 2018, DOI: 10.25967/480138
• Romblad J., Ohno D., Guissart A., Würz W., Krämer E.: Response of NLF Airfoils to Small Scale Turbulence, IUTAM Transition conference, London 2.-6.9.2019 Sherwin S., Schmid P., Wu X. (eds) IUTAM Laminar-Turbulent Transition. IUTAM Bookseries, vol 38. Springer, Cham, DOI: 10.1007/978-3-030-67902-6_21
• Romblad J., Ohno D., Würz W., Krämer E.: Laminar to turbulent transition at unsteady inflow conditions: Wind tunnel measurements at oscillating inflow angle, in New Results in Numerical and Experimental Fluid Mechanics XII, Contributions to the 21st STAB/DGLR Symposium, Darmstadt, Germany, 2018, (Eds.) Dillmann A., Heller G., Krämer E., Wagner C., Tropea C., Jakirlić S., Springer international publishing, 2020, DOI: 10.1007/978-3-030-25253-3
• Würz W., Sartorius D., Borodulin V.I., Kachanov Y.S.: Weakly-nonlinear interactions of broadband Tollmien-Schlichting waves in a non-self-similar boundary layer on an airfoil, European Journal of Mechanics -B/Fluids, 77, 2019, DOI: 10.1016/j.euromechflu.2019.03.002
• Romblad J., Greiner M., Guissart A., Würz W.:
  Characterization of low levels of turbulence generated by grids in the settling chamber of a laminar w ind tunnel
  Experiments in Fluids, 2022, 63:65, DOI:10.1007/s00348-022-03418-5
• Greiner, M., Würz, W.:
  In-flight measurement of free-stream turbulence in the convective boundary layer
  Exp Fluids 63, 162 (2022)
  https://doi.org/10.1007/s00348-022-03506-6

• Althaus D., Würz W.: Wind Tunnel Tests of the SM701 Airfoil and the UAG 88-143/20 Airfoil,
  Technical Soaring, Vol.17 No.1, pp21-32, 1993
• Würz W., Wagner S.: Experimentelle Untersuchungen zur Störungsanfachung in anliegenden Grenzschichten und Ablöseblasen, 7.AG-STAB Workshop, DLR-Göttingen, 14.-16.11.1995
• Würz W., Wagner S.: Experimentelle Untersuchungen zur Umschlagsentwicklung in anliegenden Grenzschichten und Ablöseblasen, 10. DGLR/AG-STAB Fach-Symposium, Braunschweig, 11.-13.11.1996
• Funk P.,Würz W.: Experimentelle Untersuchungen zur Widerstandsverminderung durch Riblets am Tragflügelprofil eines Segelflugzeugs der Standardklasse, 10. Symposium für Segelflugzeugentwicklung, Stuttgart, 18.-19.11.1996
• Würz W., Wagner S.: Hot-Wire Measurements and Transition Prediction in Boundary Layers with Adverse Pressure Gradient , Proceedings of the Colloquium on Fluid Dynamics `97, Prague 21.-23.10.1997
• Würz W.: Entwurf und Vermessung von 2 Profilen für Segelflugzeuge der Standardklasse, Symposium für Segelflugzeugentwicklung 1997, Stuttgart, 11.-12.11.1997
• Würz W., Herr S., Wagner S.: Experimentelle Untersuchung der Rezeptivität zweidimensionaler Grenzschichten,
  8. AG-STAB Workshop, Göttingen, 11.-13.11.1997
• Wagner S., Würz W., Jäger G.: Experimentelle Untersuchung der Leitwerk-Propeller Kombination für das menschtragende Solarflugzeug Icaré 2, AG-STAB Jahresbericht 1997
• Würz W., Herr S., Wagner S.: Experimental Investigation on Receptivity of two-dimensional Boundary Layers due to Surface Non-Uniformities, Proceedings of the Colloquium on Fluid Dynamics `98, Prague 20.-22.10.1998
• Würz W., Herr S., Wagner S., Kachanov Y.S.: Experimentelle Untersuchungen zur akustischen Rezeptivität einer Einzelrauhigkeit in einer 2-dimensionalen Grenzschicht, 11. DGLR/AG-STAB Fach-Symposium, Berlin, 10.-12.11.1998
• Eppler R., Würz W.: Design Philosophies for Sailplane Airfoils with Flaps, OSTIV-Congress, Bayreuth, 6.8.-10.8.1999
• Würz W., Herr S., Wörner A., Rist U., Kachanov Y.S.: 3D acoustic receptivity of boundary layer on an airfoil in presence of localized surface non-uniformities. Experiment and DNS, In: Actual Problems of Physical Hydroaerodynamics. [Transactions of International Workshop "Outcomes and Perspectives of Cooperation of the European and Siberian Scientists in Field of Physical Hydromechanics" (Part I) and of International Conference on Stability and Turbulence of Homogeneous and Heterogeneous Flows (Part II)], pp. 1-64 - 1-65. Novosibirsk: Institute of Thermophysics, 1999
• Herr S., Würz W., Wagner S.: Experimentelle Untersuchungen zur akustischen Rezeptivität einer 2-dimensionalen Grenzschicht unter dem Einfluss eines Druckgradienten, 9. AG-STAB Workshop, Göttingen, 9.-11.11.1999
• Herr S., Wörner A., Würz W., Rist U., Wagner S.: Experimentelle/Numerische Untersuchung zum Einfluss des Druckgradienten auf die akustische Rezeptivität einer Einzelrauhigkeit in einer 2-dimensionalen Profilgrenzschicht, 12. DGLR/AG-STAB Fach-Symposium Stuttgart, 15.-17.11.2000
• Würz W., Herr S., Wörner A., Rist U., Wagner S., Kachanov Y.S.: Experimental and Numerical Investigation of 3D Acoustic Receptivity due to Localized Wall Roughness, Proceedings of the ICMAR 2000, Novosibirsk, 9.-15.7.2000
• Herr S., Würz W., Wörner A., Rist U., Wagner S., Kachanov Y.S.: Experimental and Numerical Investigation of 3D Wall Roughness Acoustic Receptivity on an Airfoil, ICTAM 2000, Chicago, 27.8.-2.9.2000
• Wörner A., Rist U., Herr S., Würz W., Wagner S., Kachanov Y.S.: Study of the Acoustic Receptivity of a Blasius Boundary Layer in the Presence of a Surface Non-Uniformity, ECCOMAS 2000, Barcelona, 11.-14.9.2000
• Lang M., Marxen O., Rist U., Wagner S., Würz W.: LDA-Messungen zur Transition in einer laminaren Ablöseblase; Lasermethoden in der Strömungsmeßtechnik, 8. Fachtagung der Gala, Freising-Weihenstephan,12.-14.9.2000
• Würz W.: Rezeptivität und Transition, Grundlagenuntersuchungen am Laminarwindkanal, 24. Segelflugsymposium, Stuttgart, 20.u.21.11.2000
• Ivanov A.V., Würz W., Herr S., Wagner S.: Experimental Investigation of 3-D Acoustic Receptivity due to a Surface Vibration on an Airfoil, EUROMECH Colloquium 423 'Boundary-Layer Transition in Aerodynamics‘, Stuttgart, 2.-4.4.2001
• Herr S., Würz W.,Wagner S.: Experimentelle Untersuchungen zur Charakterisierung des dominanten Störspektrums in der Anströmung anhand der Rezeptivität einer Oberflächenstörung an einem 2-dimensionalen Tragflügelprofil, 10. AG STAB-Workshop, Göttingen, 14.-15.November 2001
• Lang M., Rist U., Wagner S., Würz W.: Überblick über aktuelle Untersuchungen zur Transition in einer laminaren Ablöseblase am IAG, 25. Segelflugsymposium, Braunschweig, 21.-22.11.2001
• Würz W., Herr S., Wagner S., Kachanov Y.S.: A First Experimental Approach to the Distributed 3D-Vortex Receptivity of a Boundary Layer on an Airfoil, Proceedings of the ICMAR 2002, Novosibirsk, 1.-7.7.2002
• Ivanov A.V., Würz W., Herr S., Wagner S., Kachanov Y.S.: Experimental Study of Essentially Non-Stationary Acoustic Receptivity of a Boundary Layer on an Airfoil due to Surface Non-Uniformities, Proceedings of the ICMAR 2002, Novosibirsk, 1.-7.7.2002
• Sartorius D., Würz W., Wagner S.: Experimentelle Untersuchung zur aktiven Kontrolle laminarer Ablöseblasen, 26. Segelflugsymposium, Stuttgart, 21-22.11.2002
• Feßler R., Würz W.: Flugerprobung eines Funk-Umschlagsensors, 26. Segelflugsymposium, Stuttgart, 21-22.11.2002
• Sartorius D., Würz W., Wagner S.: Auslegung eines Membranaktuators unter Berücksichtigung der Stabilitäts- und Rezeptivitätseigenschaften der Grenzschicht, 11. AG STAB-Workshop, Göttingen, 4.-5.November 2003
• Guidati S., Herrig A., Ostertag J., Würz W., Wagner S.: Numerical Simulation and Measurement of Boundary-Layer Induced Noise on Wing Sections, 4th Aeroacoustics Workshop, Aachen, 26.-27. February 2004
• Würz W.: A Coherent Particle Velocity Method for Measurement of Trailing Edge Noise on Airfoils, Fluid Dynamics Research - Selected Recent Results, An International colloquium on the occasion of the retirement of Prof. Dr.-Ing. Siegfried Wagner, Stuttgart, 7.Mai 2004
• Würz W., Sartorius D., Wagner S., Borodulin V.I., Kachanov Y.S.: Experimental study of weakly nonlinear interactions of instability waves in a non self-similar boundary layer on an airfoil, Part I: Base flow and initially tuned resonances, ICMAR 2004, Novosibirsk, 28.6.-2.7.2004
• Sartorius D., Würz W., Wagner S., Borodulin V.I., Kachanov Y.S.: Experimental study of weakly nonlinear interactions of instability waves in a non self-similar boundary layer on an airfoil, Part II: Influence of frequency and spanwise-wavenumber detunings, ICMAR 2004, Novosibirsk, 28.6.-2.7.2004
• Würz W., Guidati S., Herrig A., Lutz Th., Wagner S.: Measurement of trailing edge noise by a coherent particle velocity method, ICMAR 2004, Novosibirsk, 28.6.-2.7.2004
• Sartorius D., Würz W.,  Wagner S., Borodulin V.I., Kachanov Y.S.: Resonant Interactions of 3D Instability Waves in an Airfoil Boundary Layer for Harmonic and Broadband Perturbations, XXI. International Congress of Theoretical and Applied Mechanics (ICTAM), Warsaw, 15.-21.8.2004, ICTAM Proceedings, W.Gutkowski & T.A. Kowalewski eds., paper FM24L_12675, Springer Verlag Berlin,2005
• Sartorius D., Würz W., Wagner S.: Control of laminar separation bubbles by a flush mounted 2D membrane actuator, NATO conference AVT-111, Prague, Czech Republic, Oct. 2004
• Lutz Th., Würz W., Herrig A., Braun K., Wagner S.: Numerical Optimization of Silent Airfoil Sections, Deutsche Windenergie-Konferenz 2004, Wilhelmshaven, 20.-21.10.20, 2004
• Sartorius D., Würz W., Ries T., Kloker M., Wagner S., Borodulin V.I., Kachanov Y.S.: Experimental Study of Resonant Interactions of Instability Waves in an Airfoil Boundary Layer, IUTAM Symposium on Laminar-Turbulent Transition, 13.-17. December 2004, Bangalore, India, Fluid Mech. and its Applications, Vol.78, Rama Govindarajan (Ed.), pp. 159-165, Springer Verlag Berlin, 2006
• Herrig A., Würz W., Lutz Th., Braun K., Krämer E., Oerlemans S.: Trailing-Edge Noise Measurements of Wind Turbine Airfoils in Open and Closed Test Section Wind Tunnels, Windturbinenoise 2005, Berlin
• Lutz Th., Herrig A., Würz W., Braun K., Krämer E.: Constrained Aerodynamic & Aeroacoustic Design of Wind-Rotor Airfoils, First International Meeting on Wind Turbine Noise: Perspectives for Control, Berlin, 17.-18.October 2005
• Würz W., Sartorius D., Kloker M., Ries T., Wagner S., Smorodsky B., Borodulin V.I., Kachanov Y.S.: Experimental, numerical and theoretical investigation of weakly nonlinear stages of transition in a non self-similar boundary layer, 12. AG STAB-Workshop, Göttingen, 8.-9.November 2005
• Herrig A., Würz W., Krämer E.: Akustisches Messverfahren für den Einsatz in Windkanälen mit hohem Hintergrundstörpegel, 12. AG STAB-Workshop, Göttingen, 8.-9.November 2005
• de Paula I.B., de Medeiros M.A.F., Würz W., Mendonça M.T.: Fundamental resonance induced by a 3D shallow roughness, 58th Annual Meeting of the Division of Fluid Mechanics, American Physical Society, Chicago, 20.-22. November 2005
• Schepers J.G., Curvers T., Oerlemans S., Braun K., Lutz Th., Herrig A., Würz W., Mendez Lopez B., Arelt R., Maeder T.: Sirocco: Silent Rotors by Acoustic Optimisation, European Wind Energy Conference, Athen, 27.2.-2.3.2006
• Herrig A., Würz W., Lutz Th., Krämer E.: Trailing-Edge Noise Measurements using a Hot-Wire Based Coherent Particle Velocity Method, 24th AIAA Applied Aerodynamics Conference, San Francisco,5.-8.June 2006
• Lutz Th., Herrig A., Würz W., Kamruzzaman M., Krämer E.: Design and Wind-Tunnel Verification of Low-Noise Airfoils for Wind Turbines, 24th AIAA Applied Aerodynamics Conference, San Francisco, 5.-8. June 2006
• de Paula I. B., de Medeiros M. A. F., Würz W., Mendonça M. T.: Experimental study on the boundary layer transition induced by a shallow 3D roughness element, 6th Euromech Fluid Mechanics Conference, Stockholm, 26.-30. June 2006
• Lutz Th., Würz W., Herrig A., Braun K., Krämer E., Schepers J.G., Curvers A.P.W.M., Oerlemans S., Matesanz A., Ahrelt R., Maeder T. Herr S.: New Results from the European SIROCCO Project: Silent Rotors by Acoustic Optimization, DEWEK 2006, 8th German Wind Energy Conference, Bremen, 22.-23. November 2006
• Kobiela B., Lerch A., Herrig A., Würz W.: Grenz-N-Faktor Bestimmung bei Reynoldszahlen < 600.000 - Ein neuer Ansatz für kombinierte Freiflug- und Windkanalmessungen, Segelflug-Symposium, Darmstadt, 23.-24. November 2006
• Herrig A., Würz W., Lutz Th., Krämer E., Wagner S.: Trailing-Edge Noise Measurements of a NACA 0012 Airfoil using the Coherent Particle Velocity Method, VIII Int. Conference on Methods of Aerophysical Research ICMAR, 05.-10.Feb. 2007
• Herrig A., Würz W., Lutz Th., Krämer E., Wagner S.: Measurement of Airfoil Trailing Edge Noise with the Coherent Particle Velocity Method, 33rd German Annual Conference on Acoustic (DAGA), Stuttgart, 19.-22.März 2007
• Schepers J.G., Curvers T., Oerlemans S., Braun K., Lutz Th., Herrig A., Würz W.,  Matesanz A., Fisher M., Koegler K., Maeder T.: Sirocco: Silent Rotors by Acoustic Optimisation, Second International Meeting on Wind Turbine Noise, Lyon, 20.-21.September 2007
• Miller A., Müller M., Neumann S.O., Würz W.: Numerische Untersuchung der aerodynamischen Kräfte an einem Flügelelement mit unterbrochenem Hinterkantenschlitz, ANSYS Conference & 25th CADFEM Users' Meeting 2007, Dresden, 21.-23. November 2007
• Herrig A., Würz W., Krämer E., Wagner S.: Hitzdraht-basierte Messungen von Hinterkantenlärm an NACA-0012-Profilen, 13. AG STAB Workshop, Göttingen, 14.-15. Nov.2007
• Würz W., Sartorius D., Kloker M., Ries T., Wagner S., Smorodsky B., Borodulin V.I., Kachanov Y.S.: Experimental, numerical and theoretical investigation of weakly nonlinear stages of transition in a non self-similar boundary layer, 13. AG STAB Workshop, Göttingen, 14.-15. Nov.2007
• Herrig A., Würz W., Krämer E., Wagner S.: New CPV-Results of NACA 0012 Trailing-Edge Noise, Int. Conference on Methods of Aerophysical Research ICMAR , 30.June-06.July 2008
• de Paula I.B., Sartorius D., Krämer E., Kachanov Y.S.: Experimental Study of Broadband Resonant Interactions in an Non-Self Similar Boundary Layer of an Airfoil, Int. Conference on Methods of Aerophysical Research ICMAR , 30.June-06.July 2008
• Herrig A., Würz W., Krämer E., Wagner S.: Trailing-Edge Noise Measurements on NACA 0012 Airfoils Using the Coherent Particle Velocity Method, 15th International Congress of Sound and Vibration, Daejon, Korea, 06.-10.July 2008
• Würz W., Sartorius D., Kloker M., Wagner S., Smorodsky B., Borodulin V.I., Kachanov Y.S.: Weakly nonlinear stages of transition in an airfoil boundary layer. A combined experimental, numerical and theoretical investigation, Deutscher Luft- und Raumfahrtkongress der DGLR, Darmstadt, 23.-25. September 2008
• Herrig A., Würz W.: Untersuchungen zur atmosphärischen Turbulenz in Bodennähe, 32. Symposium für Segelflugzeugentwicklung, Gersfeld, 20.-21. 11.2008
• Käser, K., Ruppert R., Würz W.: Untersuchungen zur Aerodynamik bespannter Tragflügel am Beispiel des Archaeopteryx, 32. Symposium für Segelflugzeugentwicklung, Gersfeld, 20.-21. 11.2008
• Cerretelli C., Gharaibah E., Toplack G., Gupta A., Würz W.: Unsteady Separation Control for Wind Turbine Applications at Full Scale Reynolds Number, 47th AIAA Aerospace Sciences Meeting, AIAA 2009-380, Orlando, 5.-8. January 2009
• Kamruzzaman M., Herrig A., Lutz Th., Würz W., Kraemer E., Wagner S.: Comprehensive Evaluation and Assessment of Trailing Edge Noise Prediction Based on Dedicated Measurements, 3rd Conference on Wind Turbine Noise, 17-19 June, Aalborg, Denmark, 2009
• de Paula I. B., Würz W., Krämer E., Borodulin V. I., Kachanov Y. S.: Experimental study of resonant interaction of modulated waves in a non self-similar boundary layer, 7th IUTAM Symposium on Laminar-Turbulent Transition, KTH Stockholm. 22-26.06.2009, IUTAM Bookseries 18, P.Schlatter and D.S. Henningson eds., Springer Verlag Berlin, pp. 274-279, 2010
• de Paula I.B., Würz W., Medeiros M.A.F.: The Effect of a single three-dimensional roughness element on the boundary layer transition, 7th IUTAM Symposium on Laminar-Turbulent Transition, KTH Stockholm. 22-26.06.2009
• de Paula, I.B., Würz, W., Krämer, E., Borodulin, V.I., Kachanov, Y.S.: Experimental study of weakly non-linear interactions of Tollmien-Schlichting waves in a non self-similar boundary layer, 14th STAB Workshop, Göttingen. 11.-12. November 2009
• Kamruzzaman M., Wolf A., Bekiropoulos D., Lutz Th., Herrig A., Würz W., Krämer E.: Study of Turbulent Boundary Layer Wall Pressure Fluctuations Spectrum Models for Trailing-edge Noise Prediction, 15th Int. Conf. on the Methods of Aerophysical Research (ICMAR 2010), Akademgorodok, Novosibirsk Russia, 1-6 Nov., 2010
• Kamruzzaman M., Lutz Th., Würz W., Krämer E..: On the Length Scales of Turbulence for Aeroacoustic Applications, AIAA 2011-2734,17th AIAA/CEAS Aeroacoustics Conference (32nd AIAA Aeroacoustics Conference) 05 - 08 June 2011, Portland, Oregon
• de Paula, I.B., Würz, W., Krämer, E., Borodulin, V.I., Kachanov, Y.S.: Production of Seeds for Subharmonic Resonance in the Evolution of Modulated T-S waves on an Airfoil Boundary Layer, 8th Euromech Fluid Mechanics Conference. September 13 - 16, 2010. Bad-Reichenhall, Germany
• de Paula, I.B., Würz, W., Krämer, E., Borodulin, V.I., Kachanov, Y.S.: Generation of seeds for subharmonic resonances in an airfoil boundary layer transition initiated by modulated TS waves, XV International Conference on Methods of Aerophysical Research. November 1 - 6, 2010. Novosibirsk: ITAM SB RAS 2010
• Wolf A., Lutz Th., Würz W., Stalnov O., Krämer E.: Impact of Suction on Boundary-Layer and Noise Emission of Wind Turbine airfoils, DEWEK-2010, Bremen, 17.-18.11.2010
• Würz W.: Evolution von Klappenprofilen, 34. Symposium für Segelflugzeugentwicklung, 18.-19.11.2010, Braunschweig
• Plogmann B., Würz W., Krämer E.: Interaction of a 3D roughness element with a laminar boundary layer near an airfoil leading edge, AG STAB Workshop, Göttingen, 09.-10.11.2011
• Plogmann B., Würz W. Krämer E.: Interaction of a Three-Dimensional Roughness Element with a TS-wave near an Airfoil Leading edge, 16th International Conference on the Methods of Aerophysical Research, Kazan, Russia, August 20 - 26, 2012
• Plogmann B., Würz W., Krämer E. : Interaction of a Cylindrical Roughness Element and a Two-Dimensional TS-Wave 18, DGLR-Symposium of STAB, Stuttgart, Germany, November 6-7, 2012
• Plogmann B., Würz W.: The Influence of a Cylindrical Roughness Element on a Perturbed Laminar Boundary Layer, AIAA Paper 2013-3109, 43rd AIAA Fluid Dynamics Conference, San Diego, June 24-27, 2013, DOI: 10.2514/6.2013-3109
• Plogmann B., Würz W., Krämer E.: The Influence of a Cylindrical Roughness Element on the Disturbance Evolution in a Perturbed Laminar Boundary Layer, 16. STAB-Workshop, Göttingen, November 12-13, 2013
• Werner M., Würz W., Krämer E.: Experimental Investigations of Tonal Noise on Vehicle Side Mirrors, 16. STAB-Workshop, Göttingen, November 12-13, 2013
• Plogmann B., Würz W., Krämer E.: Stability of a boundary layer flow in the wake of a medium roughness element, AIAA Paper 2014-2886, 44th AIAA Fluid Dynamic Conference, Atlanta, June 16-20, 2014, DOI: 10.2514/6.2014-2886
• Hanifi A., Alfredsson P.H., Imayama S., Örlü R., Tillmark N., Vernet J., Hein S., Romano D.G., Minervino M., Würz W., Borodulin V.I., Ivanov A.V., Kachanov Y.S.: Numerical and experimental realization of an infinite swept wing boundary layer flow in a wind tunnel, XVII. Int. conference on the methods of aerophysical research, Novosibirsk, 30.6.-6.7.2014
• Plogmann B., Würz W., Krämer E.: Nonlinear mode interactions in the wake of a medium height roughness element, 8th IUTAM Symposium on Laminar Turbulent Transition, Rio de Janeiro, September 8-12, 2014, in Procedia IUTAM, Vol. 14, 2015, pp.423-432, DOI: 10.1016/j.piutam.2015.03.070
• Plogmann B., Würz W., Krämer E.: Nonlinear disturbance evolution downstream of a medium height roughness element, 19. STAB-Symposium, München, November 4-5, 2014
• de Paula I.B., Würz W., Borodulin V.I., Kachanov Y.S.: Weakly-nonlinear interactions of modulated T-S waves in the boundary layer of an airfoil, Procedia IUTAM, 2015. Vol. 14. IUTAM_ABCM Symposium on Laminar Turbulent Transition / Eds.: M.A.F. Medeiros & J.R. Meneghinipp, pp. 433 – 437, DOI: 10.1016/j.piutam.2015.03.071
• Werner M., Würz W., Krämer E.: Experimental Investigation of the Tonal Self-Noise Emission of a Vehicle Side Mirror, 22nd AIAA/CEAS Aeroacoustics Conference Lyon, France, 2016, DOI: 10.2514/6.2016-2753
• Maughmer M.D., Coder J.G., Wannenmacher Ch., Würz W.: The Design of a New Racing Sailplane: A New Thermal Mix Model and the Role of Transitional CFD, Proc. of 17th AIAA Aviation Technology, Integration, and Operations Conference 2017, Denver, USA, June 2017 pp. 580-598
• Romblad J., Ohno D., Nemitz T., Würz W., Krämer E.: Laminar to Turbulent Transition under unsteady Inflow Conditions: Wind Tunnel Experiments, 18th AG STAB-Workshop, Göttingen, 7.-8.11.2017
• Romblad J., Ohno D., Nemitz T., Würz W., Krämer E.: Laminar to Turbulent Transition under unsteady Inflow Conditions: Wind Tunnel Experiments, Segelflugsymposium, Braunschweig, 23-24.11.2017
• Würz W.: Grundlagenuntersuchungen und Messverfahren am Laminarwindkanal der Universität Stuttgart, 11. Technik-Kolloquium Regensburg, 23.5.2018
• Greiner M., Osso C., Würz W.: Turbulente Anströmbedingungen für laminare Profile: Messung von Turbulenzspektren im Segelflug, 42. Symposium für Segelflugzeugentwicklung, Darmstadt 21/22..11.2018
• Petters V., Würz W., Scholz W., Axthelm J.: Anti-Stall-Assistenz-System, 42. Symposium für Segelflugzeugentwicklung, Darmstadt 21/22..11.2018
• Romblad J., Ohno D., Guissart A., Würz W., Krämer E.: Wind Tunnel Experiments on Laminar to Turbulent Transition at Increased Turbulence Levels, IUTAM Transition Symposium, 2-6 September 2019 in London
• Greiner, M., Würz, W.: Turbulent Inflow Conditions and Laminar Separation Bubbles: Inflight Measurements of Turbulent Spectra for Wind Tunnel Experiments, 19. Stab Workshop, 5.-6.11.2019, Göttingen
• Petters V., Würz W.: Anti-Stall-Assistenz-System – Stand der Dinge, 43. Symposium für Segelflugzeugentwicklung, Braunschweig 21/22..11.2019
• Greiner, M., Würz, W.: Laminar separation bubbles at unsteady inflow conditions – a status report, OSTIV Congress XXXV, 19.-23.07.2021, Online conference
• Deck U., Würz W.: Entwicklung und Erprobung einer autarken Messanlage zur Flugleistungsvermessung, 45. Symposium für Segelflugzeugentwicklung, Braunschweig 19.-20.11.2021
• Deck U., Würz W.:
  Flugleistungsmessung mittels direkter Gleitwinkelmessung – im zweiten Schritt zur Lösung?
  46. Symposium für Segelflugzeugentwicklung, online, 17.-18.11.2022
• Deck U., Würz W.:
  In-flight measurements on the Influence of Freestream Turbulence on a NLF Airfoil
  AIAA Aviation 2023 Forum, 12.-16.June 2023, San Diego, USA
  AIAA 2023-3675
  https://doi.org/10.2514/6.2023-3675
• Deck U., Würz W.:
  Freiflugmessungen der Profilpolare eines Laminarprofils unter konvektiven Anströmbedingungen
  Deutscher Luft- und Raumfahrtkongress, Stuttgart 2023
  https://doi.org/10.25967/610094
• Deck U., Würz W.:
  Heißfilmmessungen zur Transition im Freiflug bei thermisch aktiver Konvektion
  21. STAB-Workshop DLR Göttingen, 7.11.2023
• Deck U., Würz W.:
  Freiflugmessungen am Ventus 3 zur Bestimmung der Profilpolare unter konvektiven Anströmbedingungen
  48. Symposium für Segelflugzeugentwicklung, 22.-23.11.2023
• Greiner M., Würz,W.:
  Ablöseblasen unter den turbulenten Anströmbedingungen der Thermik - Eine Studie im Windkanal
  48. Symposium für Segelflugzeugentwicklung, 22.-23.11.2023

• Grant of the German Foundation for Basic Research (DFG): ' Experimental investigation of laminar separation bubbles ', AL 242/1-3, 1986 - 1988, (Participant in the project)
• Grant of the German Foundation for Basic Research (DFG): ' Experimental investigation of the receptivity of two dimensional boundary layers ', Wa 424/16, 1996 - 2002, (Head of the project)
• Grant of the 'Forschungsschwerpunktprogramm Baden Württemberg, ' Intelligenter Tragflügel für zukünftige Flugzeuggenerationen ', (2001-2003) (Participant in the project)
• Grant of the European Commission: 'DATA, Design and Testing of Acoustically Optimized Airfoils for Wind Turbines' Non-Nuclear Energy Program, JOR3-CT98-0248, 1998 - 2001, (Participant in the project)
• Grant of the German Foundation for Basic Research (DFG): 'Verbundvorhaben SWING, Numerische Aeroakustik für Verkehrsflugzeuge', Wa 424/17, 1997 - 2000, (Participant in the project)
• Grant of the German Foundation for Basic Research (DFG):Verbundvorhaben SWING+, Numerische Aeroakustik für Verkehrsflugzeuge, Wa 424/18, 2000 - 2003 , (Participant in the project)
• International grant of the German Foundation for Basic Research (DFG) together with the Russian Foundation of Basic Research (RFBR): ' Experimental, theoretical and numerical investigation of resonant interactions of TS-instabilities in a boundary layer with variable pressure gradient ', Wu 265/1-1, 2003 - 2005, (Head of the project from German side)
• International grant of the European Commission: 'SIROCCO, Silent Rotors by Acoustic Optimisation', ENK5-CT-2002-00702, 2003-2006 (Participant in the project)
• International grant of the German Foundation for Basic Research (DFG) together with the Russian Foundation of Basic Research (RFBR): ' Akustische Messverfahren für den Einsatz in Windkanälen mit hohem Hintergrundlärmpegel ', Wu 265/2-1, 2005 - 2008, (Head of the project from German side)
• Integrated EU-project UPWIND, FP6-2004-Energy-3, Integrated Wind Turbine Design, 2005-2010 (Participant in the project)
• International grant of the German Federal Ministry of Environment, Nature Conservation and Nuclear Safety (BMU) together with Ministry of Science and Technology Israel: Active flow control noise reduction , 2009-2011, (Participant in the project)
• International grant of the German Foundation for Basic Research (DFG) together with the Russian Foundation of Basic Research (RFBR): ' Nichtlineare Stadien der Transition in einer verzögerten Flügel-Grenzschichtströmung bei kontrolliertem, kontinuierlichen und bei natürlichem Störspektrum ’, Wu 265/3-1, 2007 - 2010, (Head of the project from German side)
• Collaborated EU-project RECEPT, FP7-AAT-2010-RTD-1: RECEPTivity and amplitude-based transition prediction, 2010-2015 (Participant in the project)
• Grant of the German Foundation for Basic Research (DFG): Interaction of a laminar boundary layer with roughness elements in the close vicinity of an airfoil leading edge , WU265/4-1, 2010 - 2016, (Head of the project)
• AUDI AG Aero-acoustic research project: Tonal noise generation on vehicle side mirrors, 2012 - 2016 (Head of the experimental part of the project)
• LuFo V-2: Laminar-turbulente Transition unter instationären Anströmbedingungen (LTT) , 2016 – 2019 (Head of the wind tunnel part of the project)
• LuFo V-3: ASASys, Anti Stall Assistenz System , 2017 – 2021 (Head of the wind tunnel part of the project)
• BW-MWK: Grundlagen des automatisierten Kiteflugs als Antrieb für die Airborne Wind Energy im maritimen Bereich (AutoKite) , 2021 - 2023 (Head of the wind tunnel part of the project)
• LuFo V-3: LAINA, Untersuchung laminarer Ablöseblasen unter instationären Anströmbedingungen zur Verbesserung von Profilentwurfsverfahren , 2018 – 2022 (Head of the wind tunnel part of the project)
• LuFo VI-1: HPIA, Hochleistungsprofil für instationäre Anströmbedingungen, 2021 - 2023, (Head of the wind tunnel part of the project)