Volume 29 Issue 6
Jun.  2014
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Article Navigation >  Journal of Aerospace Power  > 2014  >  (6): 1272-1278
LIU You-hong, LI Ying, YANG Xu. Cooling performance and comparison of impingement/effusion cooling lamilloy used as heat shield[J]. Journal of Aerospace Power, 2014, (6): 1272-1278. doi: 10.13224/j.cnki.jasp.2014.06.003
Citation: LIU You-hong, LI Ying, YANG Xu. Cooling performance and comparison of impingement/effusion cooling lamilloy used as heat shield[J]. Journal of Aerospace Power, 2014, (6): 1272-1278. doi: 10.13224/j.cnki.jasp.2014.06.003
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Cooling performance and comparison of impingement/effusion cooling lamilloy used as heat shield

doi: 10.13224/j.cnki.jasp.2014.06.003

  • 1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

  • 2. Chengdu Textile College, Chengdu 611731, China

  • Received Date: 2013-04-02
  • Publish Date: 2014-06-28
    Abstract
  • In order to study the cooling performance of impingement/effusion cooling lamilloy contrastively and demonstrate the possibility of using impingement/effusion cooling lamilloy as heat shield in afterburner, a series of three-dimensional numerical simulations using fluid/solid conjugated computation method of heat transfer were conducted under three different total pressure ratio of the primary fluid to the secondary fluid conditions, and contrastive studies were carried out with both a type of corrugated heat shield and a single flat plate heat shield. Contrastive results of cooling performance, coolant consumption, coolant heat load and total pressure loss coefficient of the secondary flow were acquired. The results show that impingement/effusion cooling lamilloy has good cooling performance, but it is most affected by the change of total pressure ratio. Compared with conventional corrugated heat shield, the coolant consumption of impingement/effusion cooling lamilloy decreases by 41.6% averagely, and the coolant heat load decreases by 65.9% averagely.

     

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