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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >A new low-Reynolds version of an explicit algebraic stress model for turbulent convective heat transfer in ducts
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A new low-Reynolds version of an explicit algebraic stress model for turbulent convective heat transfer in ducts

机译：管道中湍流对流换热的显式代数应力模型的新低雷诺模型

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This investigation concerns performance of a new low-Reynolds version of an explicit algebraic stress model (EASM)for numerical calculation of turbulent forced-convective heat transfer and fluid flow in straight ducts with fully developed conditions. The turbulent heat fluxes are modeled by a SED concept, the GGDH, and the WET methods. New versions of GGDH, WET, and EASM are presented for low Reynolds numbers. However, at high Reynolds numbers, two wall functions are used, one for velocity fields and one for the temperature field. All the models are computed in a general three-dimensional channel. The low-Reynolds version of the models presented is very stable and has been used for Reynolds numbers up to 70,000 with least demanded number of grid points, and without any convergence problem or stability problem. [References: 26]
机译：这项研究涉及一种新的低雷诺版本的显式代数应力模型（EASM）的性能，该模型用于在充分发展的条件下对湍流强迫对流换热和直管中的流体流动进行数值计算。湍流通量由SED概念，GGDH和WET方法建模。提出了新版本的GGDH，WET和EASM，以降低雷诺数。但是，在高雷诺数下，使用了两种壁函数，一种用于速度场，另一种用于温度场。所有模型都是在通用三维通道中计算的。所介绍模型的低雷诺模型非常稳定，已被用于最多70,000的雷诺数，且网格点数最少，并且没有任何收敛性或稳定性问题。 [参考：26]

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