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具有凹陷涡发生器的网格冷却结构内的流动与传热特性

张翔 饶宇

张翔, 饶宇. 具有凹陷涡发生器的网格冷却结构内的流动与传热特性[J]. 航空动力学报, 2013, 28(7): 1503-1509.
引用本文: 张翔, 饶宇. 具有凹陷涡发生器的网格冷却结构内的流动与传热特性[J]. 航空动力学报, 2013, 28(7): 1503-1509.
ZHANG Xiang, RAO Yu. Flow and heat transfer characteristics in latticework cooling structure with dimple vortex generators[J]. Journal of Aerospace Power, 2013, 28(7): 1503-1509.
Citation: ZHANG Xiang, RAO Yu. Flow and heat transfer characteristics in latticework cooling structure with dimple vortex generators[J]. Journal of Aerospace Power, 2013, 28(7): 1503-1509.

具有凹陷涡发生器的网格冷却结构内的流动与传热特性

基金项目: 国家自然科学基金(51176111)

Flow and heat transfer characteristics in latticework cooling structure with dimple vortex generators

  • 摘要: 对一种具有U 形子通道以及凹陷涡发生器的新型网格冷却结构内的流动和传热特性进行了实验和数值计算研究,通过数值计算可以较准确地获得网格冷却结构的传热性能和流阻性能.在数值计算模型得到验证的基础上,还分别对具有U 形子通道和凹陷涡发生器的网格冷却结构,以及具有U 形和矩形子通道的网格冷却结构内的流动和传热性能进行了对比研究.对比研究表明:与矩形子通道相比,U 形子通道结构能够改善子通道底部的流动状况,降低流动阻力,但同时也略微降低了总体传热性能;在U 形子通道壁面上布置凹陷涡发生器能够显著增强底部流动扰动,大幅提高传热性能,但同时也增加了流动阻力.

     

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出版历程
  • 收稿日期:  2012-07-06
  • 刊出日期:  2013-07-28

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