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首页> 外文期刊>International Journal for Numerical Methods in Fluids >Periodic flow and heat transfer using unstructured meshes
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Periodic flow and heat transfer using unstructured meshes

机译：使用非结构化网格的周期性流动和热传递

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摘要

A numerical scheme has been developed for computing fluid flow and heat transfer in periodically repeating geometries. Unstructured solution-adaptive meshes are used in a cell-centred finite volume formulation. The SIMPLE algorithm is used for pressure-velocity coupling. For periodic flows the static pressure is decomposed into a periodic component and one that varies linearly in the streamwise direction. The latter is computed from the imposition of overall mass balance at the periodic boundary. A subiteration between the periodic pressure correction equation and the correction to the linear component is used. For heat transfer a formulation using the physical rather than the scaled temperature is employed. The scheme is applied to both laminar and turbulent computations of periodic flow and heat transfer in a variety of heat exchanger geometries; comparison with published computations and experimental data is found to be satisfactory.
机译：已经开发出一种数值方案来计算周期性重复的几何形状中的流体流动和传热。在以单元为中心的有限体积公式中使用了非结构化的自适应网格。 SIMPLE算法用于压力-速度耦合。对于周期性流动，静压被分解为周期性分量，并且该静态分量沿流向线性变化。后者是通过在周期性边界处施加总体质量平衡来计算的。在周期性压力校正方程式和对线性分量的校正之间使用了一个子项。对于热传递，采用使用物理温度而不是按比例缩放的温度的制剂。该方案适用于在各种换热器几何结构中的层流和湍流计算的周期性流动和传热;与已发表的计算结果和实验数据进行比较是令人满意的。

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