Read e-book online Control of Fluid Flow PDF

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By Petros Koumoutsakos, Igor Mezic

ISBN-10: 3540251405

ISBN-13: 9783540251408

This rigorously edited monograph offers the cutting-edge of concept and functions in fluid stream regulate. It collects contributions by means of major specialists within the box of fluid stream keep an eye on fascinating for engineers, physicists, or mathematicians up to speed and fluid dynamics. "Control of Fluid circulate" covers quite a lot of contemporary issues together with vortex established keep watch over algorithms, incompressible turbulent boundary layers, aerodynamic move regulate, regulate of combining and reactive stream tactics or nonlinear modeling and keep watch over of combustion dynamics.

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41] McCullough, G. B. & Gault, D. E. 1951 Examples of three representative types of airfoil-section stall at low speeds. Tech. Rep. NACA TN 2502. Ames Aeronautical Laboratory, Moffett Field, Cal. [42] Miau, J. , Lee, K. , Chen, C. R. & Chou, J. H. 1991 Control of separated flow by a two-dimensional oscillating fence. AIAA J. 29, 1140–1148. , Aoki, K. & Masuda, S. 1993 Turbulent separation control in a plane asymmetric diffuser by periodic perturbation. In Eng. Turbulence Modelling and Expts. (ed.

P. & Panton, R. L. 1990 The interaction of Helmholtz resonators in a row when excited by a turbulent boundary layer. J. Acoust. Soc. Am. 87 (4), 1482–1488. [24] Gad-el-Hak, M. & Bushnell, D. B. 1991 Separation control: Review. J. Fluids Eng. 113, 5–30, Transactions of the ASME. [25] Good, M. C. & Joubert, P. N. 1968 The form drag of two-dimensional bluffplates immersed in turbulent boundary layers. J. Fluid Mech. 31 (3), 547–582. [26] Greenblatt, D. & Wygnanski, I. J. 2000 The control of flow separation by periodic excitation.

The results from the parameter optimization are shown in Fig. 27. Here the non-dimensional reattachment length xR /xR0 is plotted against the excitation frequency as a function of two sweep angles and two amplitudes A = vrms /UN . The optimum excitation frequency is approximately 100 Hz, independent of sweep angle and amplitude, and close to the maximum excitation frequency of the Kelvin-Helmholtz instability. 128) the development of the reattachment length as a function of the amplitude vrms /UN shows a minimum at A = 85 % (for α∗ = 0◦ this value is practically identical).

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Control of Fluid Flow by Petros Koumoutsakos, Igor Mezic


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