Abstract Conjugate heat transfer analysis of liquid metal turbulent flow through a horizontal channel has been numerically studied using a large eddy simulation (LES) technique. The effect of wall thickness and heat conduction in the wall on flow and thermal characteristics of low Prandtl number liquid metals has been investigated and reported here. Results are presented for three different liquid metal flows with different Reynolds numbers and different wall materials with wall thickness. The flow field is modeled as transient two-dimensional incompressible turbulent forced convection flow. Wall Adapting Local Eddy Viscosity (WALE) sub-grid scale (SGS) model is used to solve the turbulence closure. Two-dimensional transient heat conduction equation is solved to know the temperature distribution in the wall. A finite difference method solver is developed for solving the governing equations using sixth-order accuracy of compact schemes. Prandtl number and Reynolds number alter the heat transfer characteristics. Wall thickness shows a significant effect on the convective heat transfer rate. The new correlation of average Nusselt number has been proposed, including the effect of wall thickness for constant heat flux boundary condition. The present results are validated with DNS data and experimental results available in the literature.

中文翻译：

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液态金属湍流通过水平通道的 LES 共轭传热分析

摘要 使用大涡模拟 (LES) 技术对通过水平通道的液态金属湍流的共轭传热分析进行了数值研究。这里已经研究并报告了壁厚和壁中的热传导对低普朗特数液态金属的流动和热特性的影响。给出了具有不同雷诺数和不同壁厚材料的三种不同液态金属流的结果。流场被建模为瞬态二维不可压缩湍流强制对流。Wall Adapting Local Eddy Viscosity (WALE) 子网格尺度 (SGS) 模型用于求解湍流闭合。求解二维瞬态热传导方程，了解壁内温度分布。开发了一种有限差分法求解器，用于使用紧凑方案的六阶精度求解控制方程。普朗特数和雷诺数改变传热特性。壁厚对对流传热率有显着影响。已经提出了平均 Nusselt 数的新相关性，包括壁厚对恒定热通量边界条件的影响。目前的结果通过 DNS 数据和文献中可用的实验结果进行了验证。包括壁厚对恒定热通量边界条件的影响。目前的结果通过 DNS 数据和文献中可用的实验结果进行了验证。包括壁厚对恒定热通量边界条件的影响。目前的结果通过 DNS 数据和文献中可用的实验结果进行了验证。