Volume 30 Issue 12
Dec.  2015
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ZHU Jian-feng, HUANG Guo-ping, FU Xin, FU Yong. Characteristic of controlling flow separation in divergent curved channels by pulsed jet[J]. Journal of Aerospace Power, 2015, 30(12): 2942-2948. doi: 10.13224/j.cnki.jasp.2015.12.018
Citation: ZHU Jian-feng, HUANG Guo-ping, FU Xin, FU Yong. Characteristic of controlling flow separation in divergent curved channels by pulsed jet[J]. Journal of Aerospace Power, 2015, 30(12): 2942-2948. doi: 10.13224/j.cnki.jasp.2015.12.018

Characteristic of controlling flow separation in divergent curved channels by pulsed jet

doi: 10.13224/j.cnki.jasp.2015.12.018
  • Received Date: 2014-05-28
  • Publish Date: 2015-12-28
  • Combined with the pulsed jet overall control ruler of divergent curved channels, the steady and unsteady characteristics of flow fields in channel under different frequency states were analysed. Results show that the flow characteristics change amplitude is similar along the radial direction under steady control state, and the influence of steady jet suppresses the complex flow phenomenon and linearly changes the flow characteristic of the flow field. Under suitable pulsed jet control state, the influence of pulsed jet on the flow field is presented by changing the fluctuation time-space characteristic of separation vortex, so that the influence amplitude increases along the radial direction, and the decreased magnitude of total pressure loss in the mainstream region is more obvious; meanwhile, the periodic characteristic of the dominant separation vortex is improved significantly, and the flow coherent structure is more orderly.

     

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