为研究螺旋桨在斜流工况下的空泡特性并定量分析桨叶空泡面积，以PC456螺旋桨模型为研究对象，基于OpenFOAM平台，采用SST k-omega湍流模型和Schnerr-Sauer空化模型对PC456桨在斜流下的空泡性能进行了数值计算研究，计算了不同相位处桨叶表面的空泡形态和空泡面积。研究发现斜流对螺旋桨空化水动力性能的影响随着斜流角的增大而增加。在[-90°，40°]相位范围内，桨叶的空泡面积在-20°相位处达到最大，且斜流角增大后，空泡面积的变化幅度也有所增加。此外，空泡面积的数值计算结果与实验值吻合较好，尤其在低空泡数工况下，证明了本文采用的数值计算方法的有效性。

In order to study the cavitation characteristics of propellers under oblique flow conditions and quantitatively analyze the blade cavitation area, the present paper takes the PC456 propeller model as the research object. Based on the OpenFOAM platform, the cavitation performance of the PC456 propellers under oblique flow is numerically calculated using the SST k-omega turbulence model and Schner-Sauer cavitation model. It is found that the influence of the oblique flow on the hydrodynamic performance of the propeller cavitation increases with the increase of the oblique angle. Within the phase range of [-90°, 40°], the cavitation area of the blade reaches its maximum at the -20° phase, and as the oblique angle increases, the amplitude of the change in bubble area also increases. In addition, the numerical results of the cavitation area are in good agreement with the experimental values, especially under low cavitation numbers. This proves the effectiveness of the numerical method used in the present research.