针对气体圆射流垂直冲击平板表面换热问题 ,通过理论分析与实验提出了一种新的不依赖特定壁面函数的 k-ε模型修正方案 ,提高了模拟分析中数值格式的结构性和便利性。通过实例的模拟运算 ,发现随边界层网格精度的提高 ,模拟结果渐趋稳定 ,并与相应的实验数据进行比较 ,结果吻合较好 ,说明了修正模型的合理性 Aiming at the vertical heat transfer problem of circular jet with gas jet, a new k-ε model correction scheme that does not depend on specific wall functions is proposed through theoretical analysis and experiment, which improves the structure and convenience of numerical simulation in simulation. Through the simulation of the example, it is found that with the improvement of the precision of the boundary layer grid, the simulation results become more stable and compared with the corresponding experimental data, the result is in good agreement, which shows the rationality of the correction model