Volume 32 Issue 3
Mar.  2017
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Impingement heat transfer inside wedge-shaped concave by jets from impingment plate with front-extended port[J]. Journal of Aerospace Power, 2017, 32(3): 592-598. doi: 10.13224/j.cnki.jasp.2017.03.010
Citation: Impingement heat transfer inside wedge-shaped concave by jets from impingment plate with front-extended port[J]. Journal of Aerospace Power, 2017, 32(3): 592-598. doi: 10.13224/j.cnki.jasp.2017.03.010

Impingement heat transfer inside wedge-shaped concave by jets from impingment plate with front-extended port

doi: 10.13224/j.cnki.jasp.2017.03.010
  • Received Date: 2015-07-15
  • Publish Date: 2017-03-28
  • Experimental analysis was conducted to investigate the heat transfer inside a wedge-shaped concave by a row of jets from impingment plate with front-extended port. The effect of front-extended port extension spacing ratio (5~11), front-extended port width spacing ratio (2.5~8) and jet Reynolds number (7900~31700)on the concave surface temperature distribution, spanwised-averaged Nusselt numbers,area-averaged Nusselt numbers and jet pressure loss were experimentally tested. The results indicated that the convective heat transfer of impinging plate with front-extended port was obviously enhanced compared with baseline plate, the front-extended port caused high jet pressure loss. The convective heat transfer of concave surface was significantly improved with the increase of front-extended port extension spacing ratio, yielding little effect on jet pressure loss. Convective heat transfer of concave surface was enhanced with increase of front-extended port width spacing ratio, however, the total pressure loss increased also.

     

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