|Table of Contents|

Simulation analysis on wake flow temperature field of rocket engine in horizontal ground test(PDF)

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

Issue:
2012年06期
Page:
29-34
Research Field:
研究与设计
Publishing date:

Info

Title:
Simulation analysis on wake flow temperature field of rocket engine in horizontal ground test
Author(s):
LI Mao;  CHEN Shi-zhe;  CHEN Chun-fu
Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
Keywords:
liquid rocket engine;  horizontal ground test;  combustion reaction mod
PACS:
V434-34
DOI:
-
Abstract:
Aiming at the influence of wake flow gas of the oxyhydrogen rocket engine on the ground protective devices in the horizontal ground test, the numerical simulation of engine wake flow field was conducted with 2-dimenstional axis symmetrical model and 3-dimensional model. In the calculation, the single step H-O combustion reaction model was used for the reactions between the wake flow gas and air, and the standard k-ε turbulence model was selected. The simulation results show that when the 3-dimensional model was adopted, the fired gas flows to the ground where the gas temperature was higher than that of 2-dimenstional axis symmetrical model; as the working condition of the engine was changed, the variable trend of the gas temperature on the ground as for the 2-dimensional axis symmetrical model was opposite to that as for 3-dimension model. Therefore, the reliability of 3-dimentional is higher than 2-dimensional axis symmetrical model.

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