Volume 26 Issue 8
Aug.  2011
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ZHANG Chuan-jie, SUN Ji-ning, LI Hao, MAO Hong-xia. Investigation on heat transfer mechanism of impinging jet with cross-flow[J]. Journal of Aerospace Power, 2011, 26(8): 1768-1774.
Citation: ZHANG Chuan-jie, SUN Ji-ning, LI Hao, MAO Hong-xia. Investigation on heat transfer mechanism of impinging jet with cross-flow[J]. Journal of Aerospace Power, 2011, 26(8): 1768-1774.

Investigation on heat transfer mechanism of impinging jet with cross-flow

  • Received Date: 2010-09-01
  • Rev Recd Date: 2011-01-14
  • Publish Date: 2011-08-28
  • Experimental and numerical investigations were made to simulate heat transfer characteristics of a single impinging hole and short impinging distance with cross-flow. The results show that:(1)in the experiment, the average Nusselt number of the impingement surface increases with the increase of cross-flow; (2)the Nusselt number in the front impact area decreases with the increase of cross-flow, because the flow velocity near the wall decreases, weakening the heat transfer effect; (3)the Nusselt number behind impact area near the impact point increases with the increase of cross-flow, because the vortexes directions between the horseshoe vortex in the upstream near the impact point and the stretching vortex produced by impinging jet are the same, and these two vortexes enhance the heat transfer in the impact surface.

     

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