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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effects of inlet geometry on heat transfer and fluid flow of tangential micro-heat sink
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Effects of inlet geometry on heat transfer and fluid flow of tangential micro-heat sink

机译：入口几何形状对切向微型散热器的传热和流体流动的影响

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摘要

The paper presents the geometric optimization of the micro-heat sink with straight circular microchan-nels with inner diameter of D_i = 900 μm. The inlet cross-section has a rectangular shape and positioned tangentially to the tube axis with the four different geometries. The fluid flow regime is laminar and water with variable fluid properties is used as a working fluid. The heat flux spread through the bottom sink surface is q = 100 W/cm~2. Thermal and hydrodynamic performances of the heat sink are compared with results obtained for conventional channel configuration with lateral inlet/outlet cross-section. Besides, the results are compared with the tangential micro-heat sink with D_i = 300 μm. For all the cases, the thermal and hydrodynamic results are compared on a fixed pumping power basis.
机译：本文介绍了内径为D_i = 900μm的直圆形微通道的微型散热器的几何优化。入口横截面为矩形，并以四个不同的几何形状与管轴相切放置。流体流态是层流的，具有可变流体特性的水用作工作流体。穿过底部水槽表面的热通量为q = 100 W / cm〜2。将散热器的热性能和流体力学性能与常规的通道配置（具有横向入口/出口横截面）的结果进行了比较。此外，将结果与D_i = 300μm的切向微型散热器进行比较。在所有情况下，均以固定泵浦功率为基础比较热力和流体动力结果。

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