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Ｔ－型绕流问题是一种典型的含回流的复杂湍流流动问题，具有一定的学术与工程意义。该文用Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ方程组结合ｋ－ε湍流模型数值模拟了这种流动，并与实验数据进行了详细对比。结果表明，壁面压力和时均速度场的预测精度是令人满意的，湍流量预测值的变化趋势和实验值一致，但在数值上有差异。文中指出了造成数值预测值与实验值差异的主要原因。
T-type flow around the problem is a typical complex flow containing turbulent flow back flow, with some academic and engineering significance. This flow is simulated numerically using the Navier-Stokes equations in conjunction with the k-ε turbulence model and is compared in detail with the experimental data. The results show that the prediction accuracy of the wall pressure and the time-average velocity field is satisfactory. The trend of the predicted turbulence quantity is consistent with the experimental values, but there are differences in the values. The paper points out the main reason for the difference between the predicted value and the experimental value.