Control of Flow Over a Bluff Body

• Haecheon Choi ^[1] ; Woo-Pyung Jeon ^[1] ; Jinsung Kim ^[1]
  1. [1] Seoul National University

     Seoul National University

     Corea del Sur

     
• Localización: Annual review of fluid mechanics, ISSN 0066-4189, Nº. 40, 2008, págs. 113-139
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • In this review, we present control methods for flow over a bluff body such as a circular cylinder, a 2D bluff body with a blunt trailing edge, and a sphere. We introduce recent major achievements in bluff-body flow controls such as 3D forcing, active feedback control, control based on local and global instability, and control with a synthetic jet. We then classify the controls as boundary-layer controls and direct-wake modifications and discuss important features associated with these controls. Finally, we discuss some other issues such as Reynolds-number dependence, the lowest possible drag by control, and control efficiency.