We investigate three-dimensional cylinder wakes of incompressible fully developed flows at , resulting from control induced by tangential motions of the cylinder surface. The motion of the cylinder surface, in two dimensions, is optimized using evolution strategies, resulting in significant drag reduction and drastic modification of the wake as compared to the uncontrolled flow. The quasi-optimal velocity profile obtained in 2D is modified by spanwise harmonics and applied to 3D flows. The results indicate important differences in the flow physics induced by two and three dimensional control strategies.
On s'intéresse aux sillages de cylindres incompressibles dont la tridimensionnalité est totalement développée à , obtenus suite à un contrôle exercé par des mouvements tangentiels à la surface du corps. Les mouvements de surface sont optimisées par des stratégies évolutionnaires, et ont pour conséquence une réduction subtantielle du coefficient de traînée et une modification importante du sillage par rapport à l'écoulement non contrôlé. Le profil de vitesse quasi-optimal obtenu en 2D est modifié par des harmoniques dans la direction axiale, et appliqué à un écoulement 3D. Les résultats indiquent d'importantes différences dans la physique de l'écoulement selon la nature 2D ou 3D du contrôle.
Mots-clés : Mécanique des fluides numérique, Stratégie évolutionnaire, Sillage tridimensionnel
Philippe Poncet 1; Georges-Henri Cottet 2; Petros Koumoutsakos 3
@article{CRMECA_2005__333_1_65_0, author = {Philippe Poncet and Georges-Henri Cottet and Petros Koumoutsakos}, title = {Control of three-dimensional wakes using evolution strategies}, journal = {Comptes Rendus. M\'ecanique}, pages = {65--77}, publisher = {Elsevier}, volume = {333}, number = {1}, year = {2005}, doi = {10.1016/j.crme.2004.10.007}, language = {en}, }
TY - JOUR AU - Philippe Poncet AU - Georges-Henri Cottet AU - Petros Koumoutsakos TI - Control of three-dimensional wakes using evolution strategies JO - Comptes Rendus. Mécanique PY - 2005 SP - 65 EP - 77 VL - 333 IS - 1 PB - Elsevier DO - 10.1016/j.crme.2004.10.007 LA - en ID - CRMECA_2005__333_1_65_0 ER -
Philippe Poncet; Georges-Henri Cottet; Petros Koumoutsakos. Control of three-dimensional wakes using evolution strategies. Comptes Rendus. Mécanique, High-order methods for the numerical simulation of vortical and turbulent flows , Volume 333 (2005) no. 1, pp. 65-77. doi : 10.1016/j.crme.2004.10.007. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2004.10.007/
[1] A clustering genetic algorithm for cylinder drag optimization, J. Comput. Phys., Volume 175 (2002), pp. 79-107
[2] Optimization of vortex shedding, 3D Wakes Using Belt Actuators, Proceedings of 14th International Society of Offshore and Polar Engineering Conference, vol. 3, Toulon, France, 2004, pp. 563-570
[3] Topological aspects of three-dimensional wakes behind rotary oscillating circular cylinder, J. Fluid Mech., Volume 517 (2004), pp. 27-53
[4] Advances in Direct Numerical Simulations of three-dimensional wall-bounded flows by Particle in Cell methods, J. Comput. Phys., Volume 193 (2003), pp. 136-158
[5] Vortex Methods, Theory and Practice, Cambridge University Press, 2000
[6] Blending finite-differencies and vortex methods for incompressible flow computations, SIAM J. Sci. Comput., Volume 22 (2000), pp. 1655-1674
[7] Particle methods for Direct Numerical Simulations of three-dimensional wakes, J. Turbulence, Volume 3 (2002) no. 028, pp. 1-9
[8] Vanishing of mode B in the wake behind a rotationally oscillating circular cylinder, Phys. Fluids, Volume 14 (2002) no. 6, pp. 2021-2023
[9] Rotary oscillation control of a cylinder wake, J. Fluid Mech., Volume 224 (1991), pp. 77-90
[10] The flow induced by a rotationally oscillating and translating circular cylinder, J. Fluid Mech., Volume 385 (2000), pp. 255-286
[11] Active control and drag optimization for flow past a circular cylinder, J. Comput. Phys., Volume 163 (2000), pp. 83-117
[12] Large-Eddy Simulation of flow past a circular cylinder, Center for Turbulence Research Annual Research Briefs (1995), p. 107
[13] New results in the simulation and control of three-dimensional cylinder wakes, Comput. Fluids, Volume 33 (2004), pp. 687-713
[14] Boundary conditions for viscous vortex methods, J. Comput. Phys., Volume 113 (1994), p. 52
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