Multivariate Design and Analysis of Aircraft Heat Exchanger Under Multiple Working Conditions Within Flight Envelope

被引:5
作者
Liu, Qihang [1 ,2 ,3 ]
Xu, Guoqiang [1 ,2 ,4 ]
Wen, Jie [1 ,3 ,4 ]
Fu, Yanchen [1 ,3 ,4 ]
Zhuang, Laihe [1 ,2 ,3 ]
Dong, Bensi [1 ,3 ,4 ]
机构
[1] Beihang Univ, Natl Key Lab Sci & Technol Aeroengine Aerothermod, Beijing 100191, Peoples R China
[2] Beihang Univ, Sch Energy & Power Engn, Beijing 100191, Peoples R China
[3] Beihang Hangzhou Innovat Inst Yuhang, Hangzhou 310023, Peoples R China
[4] Beihang Univ, Res Inst Aeroengine, Beijing 100191, Peoples R China
基金
中国国家自然科学基金;
关键词
aircraft; heat exchangers; quasi-traversal genetic algorithm; multiple conditions; multivariate optimization; aerospace heat transfer; THERMAL MANAGEMENT; OPTIMIZATION; ALGORITHM;
D O I
10.1115/1.4052342
中图分类号
O414.1 [热力学];
学科分类号
摘要
This paper presents a multi-condition design method for the aircraft heat exchanger (HEX), marking with lightweight, compactness, and wide range of working conditions. The quasi-traversal genetic algorithm (QT-GA) method is introduced to obtain the optimal values of five structural parameters including the height, the tube diameter, the tube pitch, and the tube rows. The QT-GA method solves the deficiency of the conventional GA in the convergence, and gives a clear correlation between design variables and outputs. Pressure drops, heat transfer, and the weight of the HEX are combined in a single objective function of GA in the HEX design, thus the optimal structure of the HEX suitable for all the working conditions can be directly obtained. After optimization, the weight of the HEX is reduced to 2.250 kg, more than 20% lower than a common weight of around 3 kg. Based on the optimal structure, the off-design performance of the HEX is further analyzed. Results show that the extreme working conditions for the heat transfer and the pressure drops are not consistent. It proves the advance of the multi-condition design method over the traditional single-condition design method. In general, the proposed QT-GA design method is an efficient way to solve the multi-condition problems related to the aircraft HEX or other energy systems.
引用
收藏
页数:14
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