内螺纹管微通道强化换热研究综述

A Review on Heat Transfer Enhancement in Microchannels with Rifled Tubes

摘要: 内螺纹管微通道作为高效紧凑式换热器的核心元件，在高功率电子器件冷却、航空航天热管理及空调制冷等领域具有广阔应用前景。本文系统综述了内螺纹管微通道强化换热的研究进展，重点关注肋片形状及几何尺寸对流动与换热特性的影响机制。通过梳理国内外研究成果，总结了肋片几何参数对二次流强度、边界层扰动、传热恶化抑制及阻力特性的作用规律，分析了不同肋形结构的性能优劣及其适用工况。研究表明，三角形肋片因流线型好、扰流强度适中最具综合性能优势，梯形肋片在高雷诺数下表现突出，方形肋片虽扰动最强但阻力损失过大。当前研究仍存在肋形对比系统性不足、多参数耦合机制不清、预测关联式普适性差等问题。未来研究应聚焦于肋形–尺寸协同优化、机器学习辅助设计及多工况适应性评价体系的建立。本文可为内螺纹管微通道换热器的结构优化与工程应用提供理论参考。

Abstract: The rifled tube microchannel as the core component of an efficient and compact heat exchanger has broad application prospects in high-power electronic device cooling, aerospace thermal management, and air conditioning refrigeration. This paper systematically reviews the research progress of rifled tube microchannel heat transfer enhancement, with a focus on the influence mechanism of rib shape and geometric size on the flow and heat transfer characteristics. By sorting out the research results at home and abroad, it summarizes the effect laws of rib geometric parameters on secondary flow intensity, boundary layer disturbance, heat transfer deterioration suppression, and resistance characteristics, and analyzes the advantages and disadvantages of different rib shapes and their applicable conditions. The research shows that triangular rib shapes have the most comprehensive performance advantages due to their good streamline and moderate turbulence intensity. Trapezoidal rib shapes perform outstandingly at high Reynolds numbers. Square rib shapes have the strongest disturbance but excessive resistance loss. Current research still has problems such as insufficient systematic comparison of rib shapes, unclear multi-parameter coupling mechanism, and poor universality of prediction correlation formulas. Future research should focus on the coordinated optimization of rib shape and size, machine learning-assisted design, and the establishment of a multi-condition adaptability evaluation system. This paper can provide theoretical references for the structural optimization and engineering application of rifled tube microchannel heat exchangers.