Optimization of Vortex Shedding in 3-D Wakes Using Belt Actuators

Philippe Poncet (1) , Petros Koumoutsakos (2)

1 LMAP - Laboratoire de Mathématiques et de leurs Applications [Pau]
2 ETH Zürich - Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich]

This paper discusses the control of cylinder wakes via tangential wall velocity modifications. The wall velocity is piecewise constant (corresponding to belt actuators), and its amplitude is optimized using a clustering real coded genetic algorithm. This type of control significantly affects the vortical structures being shed in the wake, and it is shown that the flow gets significantly modified, resulting in a 3-dimensional body shedding 2-dimensional vortical structures.

Mots clés: vortex methods; Shedding manipulation; three-dimensional wakes; genetic algorithms; hydrodynamic instabilities

Domaines: Analyse numérique [math.NA]; Optimisation et contrôle [math.OC]; Modélisation et simulation

Philippe Poncet, Petros Koumoutsakos. Optimization of Vortex Shedding in 3-D Wakes Using Belt Actuators. International Journal of Offshore and Polar Engineering (IJOPE), 2005, 15 (1), pp.007. ⟨hal-02010668⟩