Forced convective heat transfer and thermo-hydraulic efficiency in the heat exchanger square channel (HESC) inserted with 10° wavy thin rib (WTR) are reported numerically. The effects of rib height, pitch distance and flow velocity on flow and heat transfer profiles are considered. The rib height to the channel height; e/H or H_R, is varied in the range 0.05–0.30, while the rib pitch to the channel height; P/H or P_R, is varied in the range 0.50–1.25. The air velocity in the HESC inserted with the WTR is considered in terms of Reynolds number. The Reynolds numbers (Re = 100–2000) for the present investigation is analyzed at the inlet condition. The finite volume method (commercial code) with SIMPLE algorithm is picked to solve the present problem. The numerical model of the HESC inserted with the WTR is validated for both grid independence and verification of the smooth HESC. The numerical results of the HESC inserted with the WTR are printed in terms of flow and heat transfer profiles. The values of Nusselt number, friction factor and thermal efficiency factor in the HESC inserted with the WTR are also plotted. As the numerical result, it is found that the WTR in the HESC can produce the vortex flow that the reason for the enhancements of heat transfer and efficiency. The increment of the heat transfer ability in the HESC is detected when increasing rib height and Reynolds number. In addition, the greatest thermal efficiency factor in the HESC inserted with the WTR is around 3.43 at H_R = 0.20, P_R = 1, and Re = 2000.

数值报告了插入10°波浪形细肋（WTR）的热交换器方通道（HESC）中的强制对流换热和热工效率。考虑肋高，节距和流速对流动和传热分布的影响。肋骨高度到通道高度；e / H或H _R在0.05-0.30的范围内变化，而肋骨的螺距为通道高度；P / H或P _R的变化范围是0.50–1.25。根据雷诺数考虑插入WTR的HESC中的空气速度。本研究的雷诺数（Re = 100–2000）在入口条件下进行了分析。采用SIMPLE算法的有限体积法（商业代码）解决了当前问题。插入WTR的HESC数值模型经过验证，既可确保网格独立性，又可验证平滑HESC。插入WTR的HESC的数值结果将按照流动和传热曲线打印。还绘制了插入WTR的HESC中的Nusselt数，摩擦因数和热效率因数。作为数值结果，结果发现，HESC中的WTR可以产生涡流，这是传热和效率提高的原因。当增加肋骨高度和雷诺数时，将检测到HESC中传热能力的增加。另外，在插入WTR的HESC中，最大的热效率因子在H处约为3.43_[R  = 0.20，P _[R  = 1和Re = 2000。