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Analytical wall function including roughness corrections

机译:分析墙函数,包括粗糙度校正

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摘要

Inspired by the work of Aupoix (2015a,b) and relying on the analytical wall function of Suga et al. (2006), this paper proposes a modified version of the wall model capable of accounting for roughness effects. The thermal correction was enhanced to capture roughness effects due to the increase of the wetted surface of the walls. A derivation of the model adapted to configurations with very large roughness is also proposed. The new model is compared to the former analytical wall function formulation using several rough configurations for which experimental data are available. The validation test cases have been chosen to highlight the improvements brought by the present work.
机译:受Aupoix(2015a,b)的启发,并依赖于Suga等人的分析墙函数。 (2006年),本文提出了能够考虑粗糙度影响的墙体模型的改进版本。由于壁的润湿表面的增加,增强了热校正以捕获粗糙度影响。还提出了适用于粗糙度非常大的配置的模型的推导。使用几个粗糙的配置,将新模型与以前的分析墙函数公式进行比较,可获得这些模型的实验数据。选择了验证测试用例以突出当前工作带来的改进。

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