Volume 32 Issue 11
Nov.  2017
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Numerical computation and analysis of impingement/effusion cooling performance on concave wall[J]. Journal of Aerospace Power, 2017, 32(11): 2561-2567. doi: 10.13224/j.cnki.jasp.2017.11.001
Citation: Numerical computation and analysis of impingement/effusion cooling performance on concave wall[J]. Journal of Aerospace Power, 2017, 32(11): 2561-2567. doi: 10.13224/j.cnki.jasp.2017.11.001

Numerical computation and analysis of impingement/effusion cooling performance on concave wall

doi: 10.13224/j.cnki.jasp.2017.11.001
  • Received Date: 2016-03-30
  • Publish Date: 2017-11-28
  • Fluid/solid conjugated heat transfer numerical computation was conducted to study the impingement/effusion cooling performance on concave wall of different schemes by Fluent software, and the trend of wall temperature and the integrative cooling effectiveness were obtained, while the wall temperature test of the concave wall was carried out. The results indicated that: (1) the discharge coefficient and the total pressure loss coefficient were relevant to the equivalent hole area, and the discharge coefficient and the total pressure loss coefficient of different schemes were equivalent when the equivalent hole area was uniform. (2) When the equivalent hole area was uniform, the integrative cooling effectiveness could be improved if the effusion hole area was expanded or the impingement hole area was decreased. (3) The integrative cooling effectiveness was affected by impingement and effusion holes arrangement, and the integrative cooling effectiveness of hexagonal arrangement was better than the integrative cooling effectiveness of rhombus arrangement when the hole number, hole diameter and the hole area were uniform.

     

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