Mechanism of active flow control using micro actuators

作者：Zhu Ye Chuan^*; Yuan Wei Zheng; Ma Bing He; Deng Jin Jun; Jiang Cheng Yu

来源：Nanotechnology and Precision Engineering, 2008, 6(1): 24-28.

• Active flow control
• Lift increase mechanism
• Micro balloon actuator arrays
• Micromachined synthetic jets
• Numerical simulation

Based on MEMS technology, micro balloon actuator arrays and synthetic jets were developed for active control of flow over an airfoil. Numerical simulation and wind tunnel tests were carried out to evaluate the control capability of micro balloon actuator. And, the influence mechanism of micro balloon actuators on aerodynamic performance of airfoil was studied. Meanwhile, micromachined synthetic jets and their microfluidic characteristics were described to express the lift-increase mechanism of synthetic jets. The research on two kinds of micro actuators shows that active flow control goals, such as lift-increase and stall characteristics improvement, can be achieved, at the activation of micro actuators at suitable positions on the airfoil surface with appropriate control parameters.

• 出版日期2008
• 单位西北工业大学