Abstract

A numerical simulation of the heat transfer in plate heat exchangers with diffuser channels with small opening angles was performed with a three-parameter differential turbulence model supplemented by the transport equation for a turbulent heat flux. It is shown that the amount of heat transferred from the “hot” coolant to the “cold” increases as compared that in heat exchangers with channels with a constant cross section due to the heat-transfer enhancement in heat exchangers with diffuser channels.

中文翻译：

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带有扩散器通道的板式热交换器

摘要

利用三参数微分湍流模型补充了湍流热通量的输运方程，对板式换热器中具有小开口角扩散通道的传热进行了数值模拟。结果表明，与具有恒定横截面的通道的热交换器相比，由于具有扩散通道的热交换器的传热增强，从“热”冷却剂传递至“冷”的热量增加。