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Volume 38 Issue 2
Feb.  2012
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Journal of Beijing University of Aeronautics and Astronautics  > 2012  >  (2): 195-201.
Liu He, Dong Jinzhong, Wu Naiminget al. Measurements and analysis of high-power slot-type piston actuator flow-field[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, (2): 195-201. (in Chinese)
Citation: Liu He, Dong Jinzhong, Wu Naiminget al. Measurements and analysis of high-power slot-type piston actuator flow-field[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, (2): 195-201. (in Chinese)
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Measurements and analysis of high-power slot-type piston actuator flow-field

  • 1.

    School of Aeronautics and Astronautics, Tsinghua University, Beijing 100192, China

  • 2. School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 20 Jul 2010
  • Publish Date: 29 Feb 2012
    Abstract
  • A high-power piston actuator was investigated and peak instantaneous velocity could be up to 0.3 Mach number. Exit velocity and vorticity distribution were obtained through experimental measurements. Synthetic jet flow structure and characters were investigated. Coaxial jet mixing was controlled by piston actuator, indicating which can be used in relative high velocity field to realize active flow control. The results show that the steady vortex pair at export can be formed by using the design methods of synthetic jet actuator presented. The mixing for nozzle flow can be effectively controlled with a certain excitation frequency. It presents that synthetic jet actuator can be used as the implementation of active flow control and has potentially important value to air power exhaust system.

     

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