Computational Fluid Dynamics Study of Roughened Solar Air Heater

A. Ghildyal, V. S. Bisht, A. Bisht, K. Kishor
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Abstract

A 2-dimensional numerical investigation has been conducted to examine the effect of three distinct turbulators (namely M shaped, Wedge shaped and Reverse wedge shaped) on the performance of solar air heater (SAH) for relevant Reynolds number ranges from 4000 to 18000. CFD code ANSYS FLUENT is used for simulation of turbulent airflow. For all three geometries constant ratio of e/Dh = 0.021 (where e = 0.7 and Dh = 33.33) and ratio P/e = 14.285 (where p = 10) is used. Turbulence Kinetic energy and velocity contours for all turbulators have also been studied in this analysis. M-Shaped turbulators outperformed the other two turbulators with maximum value of THPP.
粗糙化太阳能空气加热器的计算流体动力学研究
在雷诺数4000 ~ 18000范围内,研究了M型、楔型和反楔型三种不同的湍流对太阳能空气加热器(SAH)性能的影响。采用CFD软件ANSYS FLUENT对湍流气流进行模拟。对于所有三种几何形状,使用恒定比率e/Dh = 0.021(其中e = 0.7和Dh = 33.33)和比率P/e = 14.285(其中P = 10)。本分析还研究了所有紊流的湍流动能和速度轮廓。m型紊流的THPP值最大,优于其他两种紊流。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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