In the present paper, the flow characteristics and the heat transfer rate of turbulent dual jet impinging on a sinusoidal wavy surface are numerically studied. Finite-volume-based two-dimensional Reynolds-averaged Navier–Stokes equations are used to handle the complex behavior of the turbulent dual. The offset ratio is varied from 3 to 15 with an interval of 2. To evaluate the role of sinusoidal wavy surface on flow and heat transfer characteristics, the amplitude and number of cycle are varied from 0.1 to 0.7 m and from 4 to 12 with an interval of 0.1 m and 1, respectively. In the present numerical work, the Reynolds number and Prandtl number are set to 15,000 and 0.71, respectively. The bottom wall is maintained at a constant temperature. The results show that the sinusoidal wavy surface affects both the flow characteristics and heat transfer rate, and that it also enhances the heat transfer rate significantly. Approximately, a maximum of 23.27% enhancement in heat transfer rate is achieved with respect to the plane wall surface. It is also found that the average Nusselt number depends on both amplitude and number of cycle of the sinusoidal wavy surface.

在本文中，数值研究了湍流双射流撞击正弦波表面的流动特性和传热速率。基于有限体积的二维雷诺平均 Navier-Stokes 方程用于处理湍流对偶的复杂行为。偏移比在 3 到 15 之间变化，间隔为 2。为了评估正弦波面对流动和传热特性的作用，振幅和循环次数从 0.1 到 0.7 m 和从 4 到 12 变化，以间隔分别为 0.1 m 和 1。在目前的数值工作中，雷诺数和普朗特数分别设置为 15,000 和 0.71。底壁保持恒温。结果表明，正弦波状表面既影响流动特性又影响传热速率，并且显着提高了传热速率。大约，相对于平面壁面，传热率最大提高了 23.27%。还发现平均努塞尔数取决于正弦波表面的振幅和周期数。