Abstract
This article focuses on the feedback control of turbulence for skin friction reduction and reviews the state of the art of control algorithms and distributed microsensors and microactuators. From a viewpoint of possible practical applications, we discuss only the control schemes based on the wall-surface sensing of shear stress and pressure fluctuations with their assessment in direct numerical simulation. The rapid development of micro-electromechanical systems (MEMS) flow sensors/actuators is sketched, and a prototype feedback control system assembled for a turbulent channel flow is introduced. Finally, several major remaining issues in control algorithms and massive fabrication of microdevices are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 231-251 |
| Number of pages | 21 |
| Journal | Annual Review of Fluid Mechanics |
| Volume | 41 |
| DOIs | |
| Publication status | Published - 2009 Jan |
Keywords
- Actuator
- Algorithm
- Experiment
- Numerical simulation
- Sensor
ASJC Scopus subject areas
- Condensed Matter Physics