翅柱式水冷散热器的性能研究

Performance Analysis of Water-cooling Radiator with Pin-fins

为化解强化换热与流动阻力的矛盾、优化某IGBT水冷散热器的设计,对比分析了5种不同翅柱结构(带小突起枣核状、光滑枣核状、菱形、圆形和方形)对流速、压降和温度的影响。研究结果表明:带小突起枣核状翅柱的换热效果最佳,圆形翅柱的换热效果最差;光滑的枣核状翅柱流线型最好、压降最小,方形翅柱的流线型最差、压降最大;温度对冷却介质物性参数有较大的影响,在水冷散热器的设计和使用过程中需要对温度予以关注。

In order to solve the contradiction between enhanced heat transfer and flow resistance, optimize the design of a water-cooling radiator with IGBT module, it presents the comparison and analysis of the effects of 5 different pin-fins structures （with small protrusions of jujube-stone-like, smooth jujube-stone-like, rhombus, circular and square） on the velocity, pressure and temperature. Research results show that jujube-stone-like pin-fin with small protrusions has the best heat transfer effect while heat transfer effect of circular pin-fins is the worst. Smooth jujube-stone-like pin-fin has the minimum pressure drop while square pin-fin has the maximum. As temperature has great influence on cooling medium physical parameters, consideration must be taken to temperature during design and use of water-cooling radiator.