A Study on Wake Geometry behind Marine Proellers

船用螺旋桨尾流几何结构研究

• 批准号: 13650966
• 负责人: KAI Hisashi
• 金额: $ 1.92万
• 依托单位: Faculty of Engineering, Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650966/
• 关键词: Wake Geometry; Panel method; Numerical Simulation; 数値シミュレーション; ポテシャル流; 自由渦

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.

1。开发了螺旋桨后面的唤醒几何形状的应用程序。该程序既基于稳定解决方案的面板方法，又基于3维矩形机翼的几何唤醒解决方案的仿真程序。通过该方法，在无偏斜的常规海洋螺旋桨的情况下获得了良好的结果。如未考虑计算粘性效应中的那样，结果表明，在常规螺旋桨的模拟中，他可以在没有效果的情况下获得良好的解决方案。2。尽管尝试通过实验进行基于商业的CFD软件进行计算以在雷诺数和唤醒几何形状之间建立关系，但发现结果取决于网格的产生。这将是伟大的未来工作3。提交了大型海洋螺旋桨的申请。结果，如果没有粘性效应，则尾流的几何形状会分歧，并且在其效果下无法实现尾流的几何形状。4。基于非常便宜的PC的分数系统非常有用，而且成本良好。