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基于面元法,通过在回转体和空泡表面分布源汇的方法,建立了求解轴对称回转体局部空泡流场的数学模型。依据建立的数学模型,对两种典型的回转体头部线型(即头部为光滑过渡曲线的回转体和头部有突变角度的回转体)的局部空泡绕流场进行了数值计算。计算结果表明,该方法具有快速收敛的特点,第1次迭代所得结果与最终的收敛结果相比误差不超过5%,通过比较发现理论值与实测值非常接近。
Based on the surface element method, a mathematical model for solving the local cavitation flow field in an axisymmetric rotator was established by means of distributing source and sink on the surfaces of the rotator and the cavity. Based on the established mathematical model, the local cavitation flow fields of two typical revolving body headline patterns (ie, the slew body whose head is a smooth transition curve and the revolving body whose head has a sudden angle) are numerically calculated. The calculation results show that the method has the characteristics of fast convergence. The error of the first iteration result is no more than 5% compared with the final convergence result. By comparison, the theoretical value and the measured value are very close.