Design of high-efficiency and low-resistance channels for printed circuit heat exchangers based on boundary layer redevelopment

doi:10.19666/j.rlfd.202411233

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Design of high-efficiency and low-resistance channels for printed circuit heat exchangers based on boundary layer redevelopment

更新时间：2025-11-03

- Design of high-efficiency and low-resistance channels for printed circuit heat exchangers based on boundary layer redevelopment
- Thermal Power Generation Issue 9, Pages: 118-124(2025)
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- DOI：10.19666/j.rlfd.202411233
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- Published：2025
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Design of high-efficiency and low-resistance channels for printed circuit heat exchangers based on boundary layer redevelopment[J]. Thermal power generation, 2025, (9): 118-124.
DOI：

Design of high-efficiency and low-resistance channels for printed circuit heat exchangers based on boundary layer redevelopment[J]. Thermal power generation, 2025, (9): 118-124. DOI： 10.19666/j.rlfd.202411233.

摘要

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%。

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