|Table of Contents|

Heat transfer model of multi-layer brazed milling groove heat exchanger for liquid rocket engine(PDF)

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

Issue:
2022年04期
Page:
51-58
Research Field:
目次
Publishing date:

Info

Title:
Heat transfer model of multi-layer brazed milling groove heat exchanger for liquid rocket engine
Author(s):
LIU Junyan;  WANG Mei;  TIAN Yajie;  YANG Yongqiang;  HUO Shihui
(Xian Aerospace Propulsion Institute, Xian 710100, China)
Keywords:
rocket engine heat exchanger heat transfer calculation simulation model
PACS:
V434.14
DOI:
-
Abstract:
In order to meet the heating requirements of pressurized medium in the tank of a large liquid rocket, the structural characteristics of multi-layer brazed milling groove heat exchangers commonly used in rockets were analyzed.By analyzing the main factors affecting the accuracy of heat transfer calculation, a one-dimensional mathematical simulation heat transfer model was established, and a simplified calculation model was adopted for the heat transfer of local two-phase flow.The experimental results of heat exchanger show that the heat transfer calculation results are in good agreement with the experimental data, which indicates the rationality of the heat transfer model.Based on the experimental data, the simplified calculation model of two-phase flow is modified, which broadens the applicability of the heat transfer model and improves the calculation accuracy.The modified heat transfer model can be used for the preliminary optimization design of multi-layer brazed milling groove heat exchangers or heat exchangers with similar structures.

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