Volume 26 Issue 3
Mar.  2011
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SHAN Yong, ZHANG Jing-zhou, TAN Xiao-ming. Numerical study of the flow characteristics and excitation parameters for the sparkjet actuator[J]. Journal of Aerospace Power, 2011, 26(3): 551-557.
Citation: SHAN Yong, ZHANG Jing-zhou, TAN Xiao-ming. Numerical study of the flow characteristics and excitation parameters for the sparkjet actuator[J]. Journal of Aerospace Power, 2011, 26(3): 551-557.

Numerical study of the flow characteristics and excitation parameters for the sparkjet actuator

  • Received Date: 2010-01-26
  • Rev Recd Date: 2010-04-01
  • Publish Date: 2011-03-28
  • The way of using the source term in energy equation to simulate the input energy of actuator was reasonably compared with the experimental data for the sparkjet actuator.The processing of energy deposition,discharge and recovery of actuator was obtained.The instance energy input can produce the condition of high pressure and temperature in the actuator,inducing the formation of synthetic jet.Under the periodic action,the velocity of synthetic jet on the nozzle is stabilized on a non-sinusoidal law after three periodic times.The characteristic of short discharge time and long recovery time is different from the piezoelectric synthetic jet.The vortices pair at the downstream of nozzle with high intensity has an ability to roll environment air.While the input energy and actuator volume remain unchanged,the velocity at nozzle is enhanced firstly and then decreased with the increase of the excitation frequency.The recovery stage time is shortened with the increase of excitation frequency.So,the choice of excitation frequency is considered in view of the temperature resistance of actuator.

     

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