|Table of Contents|

Numerical simulation research on transpiration cooling on the inner wall of combustion chamber(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2021年04期
Page:
30-37
Research Field:
研究与设计
Publishing date:

Info

Title:
Numerical simulation research on transpiration cooling on the inner wall of combustion chamber
Author(s):
LIU Xue1; YANG Haiwei 1; ZHOU Weixing 2
(1.College of Aerospace and Civil Engineering, Harbin Engineering University,Harbin 150001,China 2.School of Energy Science and Engineering, Harbin Institute of Technology,Harbin 150001,China)
Keywords:
porous media transpiration cooling numerical simulation porosity specific surface area
PACS:
V430
DOI:
-
Abstract:
The high heat flux in the combustion chamber will damage the walls in the combustion chamber due to ablation.As an advanced cooling technology,transpiration cooling can be used in the process of thermal protection of the walls in the combustion chamber.In this paper,the plate transpiration cooling model was used to study the temperature distribution of the wall in the engine combustion chamber at different heat flux conditions.The results show that the wall temperature increases linearly with the increase of heat flux.By studying the influence of the geometric structure of porous media on the transpiration cooling effect,it was found that the increase of porosity and pore size will lead to the rise of solid wall temperature when other variables remain unchanged,which is not favorable to the protection of solid wall.The simulation results show that the increase of the coolant flow rate makes the temperature of the hot end wall drop rapidly,and even a small increase of the flow rate will have an obvious cooling effect.The temperature of the hot wall and the coolant flow are in a power function relationship,and the correlation is high.

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