Read e-book online New Results in Numerical and Experimental Fluid Mechanics PDF

By C. Abegg, H. Bippes, F. P. Bertolotti (auth.), Wolfgang Nitsche, Hans-Joachim Heinemann, Reinhard Hilbig (eds.)

ISBN-10: 3663109011

ISBN-13: 9783663109013

ISBN-10: 3663109038

ISBN-13: 9783663109037

This quantity includes the papers of the eleventh Symposium of the AG STAB (German Aerospace Aerodynamics Association). during this organization these scientists and engineers from universities, research-establishments and are concerned, who're doing learn and venture paintings in numerical and experimental fluid mechanics and aerodynamics for aerospace and different functions. a few of the contributions are giving effects from the "Luftfahrtforschungsprogramm der Bundesregierung (German Aeronautical learn Programme). a few of the papers document on paintings backed via the Deutsche Forschungsgemeinschaft, DFG, which additionally was once offered on the symposium. the quantity offers a wide review over the continued paintings during this box in Germany.

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Read Online or Download New Results in Numerical and Experimental Fluid Mechanics II: Contributions to the 11th AG STAB/DGLR Symposium Berlin, Germany 1998 PDF

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Get New Results in Numerical and Experimental Fluid Mechanics PDF

This quantity comprises the papers of the eleventh Symposium of the AG STAB (German Aerospace Aerodynamics Association). during this organization these scientists and engineers from universities, research-establishments and are concerned, who're doing study and undertaking paintings in numerical and experimental fluid mechanics and aerodynamics for aerospace and different purposes.

Extra resources for New Results in Numerical and Experimental Fluid Mechanics II: Contributions to the 11th AG STAB/DGLR Symposium Berlin, Germany 1998

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So that they can be reliably operated under flight conditions. It should also aim for a reduction of power consumption of the electronic systems to permit long time measurements in small aeroplanes of the kind employed in this research work. Acknowledgements The authors gratefully acknowledge the financial support they received for their research work in the through the DFG (German Science Foundation). The authors are also thankful to the Institute of Aerodynamics of the University of Darmstadt for making the test aeroplane available to accomplish the in-flight measurements.

But the u'-profiles are indicating a significant change due to control across the whole boundary layer thickness. At the last xposition, after a certain downstream development, a reduction of the u' -maximum by factor 5 is obvious. The measured u'-components are scattering, but the typical u'-eigenfunction of TS-disturbances can be recognized. 5 rom, are caused by surface roughness of the sensors and especially of the actuator slot, because this phenomena was not observed during measurements on a clean wing surface.

Tempe. AZ, USA. [9] Ladd. • 1990. Control of Natural Laminar Instability Waves on an Axisymmetric Body. AIAA Journal. 28. 367-369. [10] Liepmann. • 1981. Active control of laminar-turbulent transition, J. 201-204. [11] Pupator. • Sarie. • 1989. Control of random disturbances in a laminar boundary layer. AIAA Paper 89-1007. 26 slol (actuaIOf) b=125mm I=O,3mm cavity hot-wire cavity hoi-WIre I (dISturbance sensor) (control sensor) I I ~- -- O. :r '''~'m O~O o~=::~r~~r O,~6 = O,~6 EM EM :1 -0,02 actuatOl' xlc _ : .

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New Results in Numerical and Experimental Fluid Mechanics II: Contributions to the 11th AG STAB/DGLR Symposium Berlin, Germany 1998 by C. Abegg, H. Bippes, F. P. Bertolotti (auth.), Wolfgang Nitsche, Hans-Joachim Heinemann, Reinhard Hilbig (eds.)


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