于婷俐

• 1:国能双鸭山发电有限公司

摘要(Abstract)：

基于微细通道印刷电路板式换热器在热力发电、航空航天等领域的应用，以及边界层再发展理论，提出了一种高效低阻且易加工的横向开槽式通道，对通道换热进行强化。采用数值模拟方法研究平直通道及开槽通道的流动传热特性，探究横向开槽通道的传热强化及流动减阻机理。结果表明：入口效应可以在较小流阻增加的前提下大幅强化传热；横向开槽通道可以在开槽区域通过流动分离实现多次入口效应，使流动边界层周期性再发展，从而大幅强化局部对流换热；开槽区域速度梯度较小，可以有效降低局部阻力。提出的横向开槽通道可使通道换热能力提升2.24%～2.59%，阻力降低6.66%～7.91%，综合换热性能提升9.87%～11.02%。

关键词(KeyWords)： 印刷电路板换热器;入口效应;横向开槽通道;流动传热特性;高效低阻强化

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 于婷俐

DOI: 10.19666/j.rlfd.202411233

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