A Study on Wake Geometry behind Marine Proellers

1. 开发了桨后尾迹几何计算应用程序。该程序是基于定常解的面板法和三维矩形机翼几何尾迹解的仿真程序。用该方法对无斜向常规船用螺旋桨进行了分析，取得了较好的结果。由于在计算中没有考虑粘滞效应，结果表明，在常规螺旋桨的模拟中，在不考虑粘滞效应的情况下，也能得到较好的解。虽然通过实验尝试用商用CFD软件计算雷诺数与尾迹几何之间的关系，但发现结果依赖于网格生成。这将是未来伟大的作品。提出了大斜度船用螺旋桨的申请。因此，在没有粘性效应的情况下，尾迹的几何形状是发散的，而在有粘性效应的情况下，尾迹的几何形状是发散的。使用基于非常便宜的pc的分数系统是非常有用的，并且具有良好的性价比。

1. An application program for wake geometry behind propeller was developed.The program was based on both a panel method in steady solution and simulation program of geometrical wake solution for 3-dimensional rectangular wing. By the method, good results' were obtained in case of skewless conventional marine propellers. As in the calculation viscous effect was not considered, it was shown that in the conventional propeller's simulations, good solutions can he obtained without the effect.2. Although calculations by the commercial based CFD software were tried for making a relation between Reynolds number and wake geometry by experiment, it was found that the results depend on grid generation. This will be great future works.3. The applications for large skew marine propellers were submitted. As a results, in case without the viscous effect the geometry of wake is diverged and in case with the effect the result is not achieved.4. The use of a Score system based on very cheap PCs is very useful and a good cost performance.