Volume 36 Issue 11
Nov.  2021
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ZHOU Zihe, SU Hao, HE Fei, WANG Jianhua. Numerical analysis on cooling capacity of transpiration cooling system[J]. Journal of Aerospace Power, 2021, 36(11): 2363-2371. doi: 10.13224/j.cnki.jasp.20200544
Citation: ZHOU Zihe, SU Hao, HE Fei, WANG Jianhua. Numerical analysis on cooling capacity of transpiration cooling system[J]. Journal of Aerospace Power, 2021, 36(11): 2363-2371. doi: 10.13224/j.cnki.jasp.20200544

Numerical analysis on cooling capacity of transpiration cooling system

doi: 10.13224/j.cnki.jasp.20200544
  • Received Date: 2020-12-21
  • Publish Date: 2021-11-28
  • The maximum heat flux that the system can withstand under a specific amount of coolant consumption,was numerically investigated.The strict theoretical analysis and simulation results indicated that the transpiration cooling capacity was restricted by the coolant heat absorption capacity of the coolant and the heat exchange capacity between the fluid and solid.Under a small coolant mass flux,the transpiration cooling capacity was mainly determined by the coolant heat absorption capacity,while the effect of the heat exchange capacity between the fluid and solid on the transpiration cooling capacity increased with the coolant mass flux.Due to this crucial change,the effects of solid thermal conductivity,particle diameter of porous media and coolant specific heat on the transpiration cooling capacity under a small coolant mass flux were quite different with those under a larger coolant mass flux.

     

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