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流体横掠水滴形微针肋热沉流动和传热特性

周明正 夏国栋 柴磊 周利军 郜宁

周明正, 夏国栋, 柴磊, 周利军, 郜宁. 流体横掠水滴形微针肋热沉流动和传热特性[J]. 航空动力学报, 2012, 27(12): 2681-2686.
引用本文: 周明正, 夏国栋, 柴磊, 周利军, 郜宁. 流体横掠水滴形微针肋热沉流动和传热特性[J]. 航空动力学报, 2012, 27(12): 2681-2686.
ZHOU Ming-zheng, XIA Guo-dong, CHAI Lei, ZHOU Li-jun, GAO Ning. Flow and heat transfer characteristics of drop-shaped micro pin-fin heat sinks with cross flow[J]. Journal of Aerospace Power, 2012, 27(12): 2681-2686.
Citation: ZHOU Ming-zheng, XIA Guo-dong, CHAI Lei, ZHOU Li-jun, GAO Ning. Flow and heat transfer characteristics of drop-shaped micro pin-fin heat sinks with cross flow[J]. Journal of Aerospace Power, 2012, 27(12): 2681-2686.

流体横掠水滴形微针肋热沉流动和传热特性

基金项目: 国家自然科学基金(5117602); 国家重点基础研究发展计划(2011CB710704); 北京市属高等学校人才强教计划项目(PHR200906104)

Flow and heat transfer characteristics of drop-shaped micro pin-fin heat sinks with cross flow

  • 摘要: 对传统圆形微针肋进行了优化,设计了3种不同尾角的水滴形微针肋热沉,并以去离子水为工质,实验研究了各热沉流动阻力和传热特性.结果表明:3种尾角针肋中,尾角为60°时减阻效果最好.水滴形针肋的流线型结构可以改善尾部流动分布,推迟流动由层流向过度区流的转变,且尾角越小效果越明显.不同体积流量下,水滴形针肋的最优尾角有所不同.在实验中,雷诺数范围在200~1000内,尾角为60°的水滴形针肋热沉强化换热效果最好.当尾角为30°时,太长的尾部结构受到下一排针肋的影响,造成较大的流动阻力,导致其整体换热效果较差.

     

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出版历程
  • 收稿日期:  2011-12-01
  • 刊出日期:  2012-12-28

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