The two-phase flow and heat transfer characteristics of a free liquid jet impinging on a heated rotating disk are investigated by the CFD method. Numerical simulations are conducted over a range of rotational Reynolds numbers, jet Reynolds numbers, jet temperatures, nozzle diameter to disk spacing ratios, and disk to nozzle diameter ratios. The results show that the local Nusselt number increases first and then decreases along the radial direction, and it reaches the peak value in the core heat transfer zone close to the rotation center. The Nusselt number of the disk surface increases with the increase of rotational Reynolds number, jet Reynolds number, jet temperature, and nozzle diameter to disk spacing ratio, and the temperature distribution of the disk surface becomes more uniform. The increase of the disk to nozzle diameter ratio is not conducive to convective heat transfer. The temperature at the disk edge rises with the larger diameter ratio. Based on the numerical simulation results, a new correlation for the average Nusselt number is presented in terms of the dimensionless variables of jet Reynolds number, rotational Reynolds number, and Prandtl number in this study.

通过CFD方法研究了自由液体射流撞击加热旋转盘的两相流动和传热特性。在一系列旋转雷诺数、射流雷诺数、射流温度、喷嘴直径与圆盘间距比以及圆盘与喷嘴直径比的范围内进行数值模拟。结果表明，局部努塞尔数沿径向先增大后减小，在靠近旋转中心的核心传热区达到峰值。盘面的努塞尔数随着旋转雷诺数、射流雷诺数、射流温度和喷嘴直径与盘间距比的增加而增加，盘面的温度分布变得更加均匀。圆盘与喷嘴直径比的增加不利于对流传热。圆盘边缘的温度随着直径比的增大而升高。本研究基于数值模拟结果，提出了一种新的平均努塞尔数相关性，即射流雷诺数、旋转雷诺数和普朗特数的无量纲变量。