板翅式换热器波纹翅片性能数值模拟及其优化Numerical simulation and optimization on performance of wavy fins in plate-fin heat exchangers
文键,王春龙,刘华清,李超龙,田津,王斯民
摘要(Abstract)：
为提升板翅式换热器的综合性能,采用数值模拟方法,研究分析了翅片结构参数对板翅式换热器波纹翅片的流动传热特性和承压能力的影响。研究结果表明:波纹尺度对换热性能和流动阻力影响最大,而翅距和翅厚对翅片承压能力影响最大;波纹翅片结构参数主要通过改变换热面积和流速,以及加剧流体内部搅混来改变流动换热特性,其中加剧流体内部搅混为主要影响途径。结合动态Kriging响应面和遗传算法进行结构优化得到3组翅片结构参数,相较于常用结构,优化后翅片JF因子可提升5.8%～7.8%,而最大应力可降低7.3%～22.8%。研究结果可以为板翅式换热器波纹翅片的优化设计提供理论指导。
关键词(KeyWords)： 板翅式换热器;波纹翅片;流动换热性能;应力分析;多目标优化
基金项目(Foundation):
作者(Author): 文键,王春龙,刘华清,李超龙,田津,王斯民
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