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首页> 外文会议>BSME International Conference on Thermal Engineering >Effect of Aspect Ratio on Convective Heat Transfer for Flat Cross Section Using Nanofluid
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Effect of Aspect Ratio on Convective Heat Transfer for Flat Cross Section Using Nanofluid

机译：纵横比对纳米流体扁平截面对流传热的影响

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For a typical cooling application, enhancement of convective heat transfer greatly depends on tube cross sections. This phenomena was studied by performing numerical simulations on different cross sections for laminar flow with Nanofluids, containing different volume fractions (1%, 2%&3%) of Aluminum oxide water. Constant axial heat flux with constant peripheral wall temperature i.e. H1 boundary condition was applied and results were validated with existing cross sections. After accomplishing CFD analysis on several cross sections, convective heat transfer coefficient was found highest in case of flat cross section and then the effect of aspect ratio on Nusselt number was investigated. Result shows that Nusselt number increases exponentially with aspect ratio and after reaching a certain aspect ratio, and beyond that Nusselt number becomes constant.
机译：对于典型的冷却应用，对流热传递的增强大大取决于管横截面。通过对纳米流体的不同横截面进行数值模拟来研究这种现象，纳米流体的不同横截面，含有不同体积级分（1％，2％和3％）氧化铝水。恒定周边壁温度恒定的轴向热通量，即施加H1边界条件并用现有横截面验证结果。在几个横截面上完成CFD分析后，在平坦截面的情况下，对对流传热系数最高地发现，然后研究了纵横比对纽带数的影响。结果表明，在达到一定纵横比之后，何时何地呈指数呈指数级增大，并且超出该篮板数变得恒定。

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