|Table of Contents|

Study on combustion and heat transfer characteristics of a scaled trust chamber(PDF)

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

Issue:
2020年01期
Page:
28-34
Research Field:
研究与设计
Publishing date:

Info

Title:
Study on combustion and heat transfer characteristics of a scaled trust chamber
Author(s):
HAN Changlin;  TIAN Yuan
(Beijing Aerospace Propulsion Institute, Beijing 100076, China)
Keywords:
rocket engine;  thrust chamber;  combustion simulation;  heat transfer simulation;  CFD
PACS:
V434.13文献标识码:A 文章编号:1672-9374(2020)01-0028-07
DOI:
-
Abstract:
To study the influence of mass flow rate of propellant and the flow direction of coolant on combustion and heat transfer process of the trust chamber, the scaled thrust chamber of a certain type of hydrogen-oxygen rocket engine was taken as the research object, and its combustion and heat transfer process was simulated. When the coolant flow direction was changed, the maximum wall temperature varied by 1.04%, the maximum wall heat flux varied by 0.544%, the temperature rise of coolant varied by 0.233% and the coolant outlet pressure varied by 3.803%. The research shows that the direction of coolant flow has little effect on the combustion and heat transfer processes, and it affects the wall temperature distribution. When the mass flow rate of propellant increased by 22.29%, the chamber pressure increased by 22.17%, the combustion efficiency decreased by 0.55%, the maximum wall temperature increased by 9.16%, the maximum heat flux increased by 17.48% and the temperature rise of coolant increased by 13.05%. The improvement of propellant mass flow rate will lead to the increase of the wall temperature and coolant temperature rise. Because the combustion is not sufficient due to the small reaction space in the scaled engine, improving the coolant mass flow rate will reduce the combustion efficiency.

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Last Update: 2020-02-25