Simulation of mixed convection heat transfer to carbon dioxide at supercritical pressure
Simulation of mixed convection heat transfer to carbon dioxide at supercritical pressure
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DOI：
10.1177/095440620421801101
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发表时间：
2004-11
期刊：
影响因子：
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通讯作者：
Shuisheng He;W. Kim;Pei-Xue Jiang;John Derek Jackson
中科院分区：
文献类型：
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作者：
Shuisheng He;W. Kim;Pei-Xue Jiang;John Derek Jackson
摘要采用椭圆方程求解雷诺平均输运方程，对超临界压力下二氧化碳湍流混合对流换热实验进行了计算模拟。本文采用了许多双方程低雷诺数湍流模型，并将计算结果与实验数据进行了直接比较。结果表明，在这些实验中，大多数模型都能在一定程度上再现浮力对传热的强烈影响。然而，就这些效应的预测开始而言，模型的表现各不相同。
Abstract Computational simulations of turbulent mixed convection heat transfer experiments using carbon dioxide at supercritical pressure have been performed by solving the Reynolds averaged transport equations using an elliptic formulation. A number of two-equation low Reynolds number turbulence models have been used and the results have been compared directly with the experimental data. It has been shown that most of the models were to some extent able to reproduce the effects of the very strong influences of buoyancy on heat transfer in these experiments. However, the performance of the models varied significantly from one to another in terms of the predicted onset of such effects.