By George T. K. Woo, Ari Glezer (auth.), Rudibert King (eds.)
This quantity offers an up-to-date and good balanced mix of theoretical and experimental cutting-edge result of energetic move keep watch over. It combines new advancements optimum open- and closed-loop keep an eye on and version aid for keep watch over. Numerical and experimental functions are thought of from aeronautics, ground-based cars, turbo-machinery and combustors. The contributions to this booklet have been awarded on the convention energetic move regulate II, held may well 26-28, 2010, on the Technische Universität Berlin, Germany.
Read Online or Download Active Flow Control II: Papers Contributed to the Conference ”Active Flow Control II 2010”, Berlin, Germany, May 26 to 28, 2010 PDF
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Additional resources for Active Flow Control II: Papers Contributed to the Conference ”Active Flow Control II 2010”, Berlin, Germany, May 26 to 28, 2010
4 N. With the controller activated, the lift fluctuation amplitude is significantly reduced. 028 N with control. The ability to control random inputs is an important step toward developing gust suppression controllers. Unsteady Lift Suppression with a Robust Closed Loop Controller 29 Fig. 11 Randomized input velocity. The lift response with and without control (top) shows suppression of the lift fluctuations. The corresponding freestream velocity signal (bottom left) and the control input signal C 1pj/ 2 (bottom right) are shown.
In addition, pressure measurements in the middle section of the model as well as TR-PIV measurements were carried out. All experiments were conducted in the Collaborative Research Centre 557 Control of Complex Shear Flows set up at the Berlin University of Technology. Nomenclature b cflap c m˙ ·u¯ cμ = qjet∞ ·Sjet cp CD CL DC f ·c F + = u∞flap Rec t span width u¯jet flap chord length u∞ mean chord length V˙N momentum coefficient pressure coefficient α drag coefficient β lift coefficient δf duty cycle of excitation dimensionless frequency chord Reynolds number time mean velocity of pulsed jet incident velocity normalized volume flow rate angle of attack blowing angle flap deflection angle Thomas Grund · Wolfgang Nitsche Technische Universitaet Berlin, Department of Aeronautics and Astronautics, Chair of Aerodynamics, Marchstr.
028 N with control. The ability to control random inputs is an important step toward developing gust suppression controllers. Unsteady Lift Suppression with a Robust Closed Loop Controller 29 Fig. 11 Randomized input velocity. The lift response with and without control (top) shows suppression of the lift fluctuations. The corresponding freestream velocity signal (bottom left) and the control input signal C 1pj/ 2 (bottom right) are shown. 5 Conclusions A robust controller was designed with the objective of suppressing freestream flow oscillations over a wide range of unsteady flow conditions in benchmark experiment with a 3D wing.