Study of the heat transfer design of an integrated thermal management system for hypersonic vehicles using supercritical nitrogen as expendable coolant

Chen Weiwei; Wang Ruyu; Li XinjunLu ShihuaFang Xiande

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Study of the heat transfer design of an integrated thermal management system for hypersonic vehicles using supercritical nitrogen as expendable coolant

机译：Study of the heat transfer design of an integrated thermal management system for hypersonic vehicles using supercritical nitrogen as expendable coolant

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Nitrogen has been widely used as an expendable coolant in aviation and aerospace fields to cool the high-temperature components in a thermal management system. This paper presents a concept of a thermal management system for hypersonic vehicles that integrates various cooling technologies using supercritical nitrogen as heat sink. Since the thermophysical properties of supercritical nitrogen vary acutely with temperature, existing heat transfer empirical models fail to accurately evaluate the heat transfer coefficient of supercritical nitrogen during the parameter design of the thermal management system. Therefore, a new correlation specialized for supercritical nitrogen is proposed relying on a heat transfer experimental database including 784 data points compiled from seven published papers and the computer optimized dimensionless groups, which commendably solve the considerable deviation caused by the thermophysical property distortion and buoyancy effect. The new correlation has a mean absolute deviation (MAD) of 3.9 and improves the prediction accuracy of supercritical nitrogen heat transfer calculation remarkably by predicting 94.9 of the entire database within +/- 10 error band, based on which the heat transfer design method of the integrated thermal management system is discussed. (c) 2022 Elsevier Masson SAS. All rights reserved.

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来源
《Aerospace science and technology》 |2022年第4期|107440.1-107440.13|共13页
作者
Chen Weiwei; Wang Ruyu; Li XinjunLu ShihuaFang Xiande;
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作者单位

Nanjing Normal Univ, Sch Energy & Mech Engn, 2 Xuelin Rd, Nanjing 210023, Peoples R China|Nanjing Normal Univ, Sch Geog Sci, 1 Wenyuan Rd, Nanjing 210023, Peoples R China;

Nanjing Normal Univ, Sch Energy & Mech Engn, 2 Xuelin Rd, Nanjing 210023, Peoples R China;

Nanjing Univ Aeronaut & Astronaut, Key Lab Aircraft Environm Control & Life Support, MIIT, 29 Yudao St, Nanjing 210016, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
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关键词
Supercritical nitrogen; Thermal management system; Cooling; Correlation; Heat transfer designs;

Study of the heat transfer design of an integrated thermal management system for hypersonic vehicles using supercritical nitrogen as expendable coolant

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