Study on Numerical Simulation of Flow around Body by MPS using Cluster System

基于集群系统的MPS绕体流数值模拟研究

基本信息

批准号：
15560691
负责人：
KAI Hisashi
金额：
$ 2.3万
依托单位：
National University Corporation 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：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

An existing two-dimensional particle method program was originally changed to the three-dimensional particle method code by this research, and an excellent result was obtained about the following three-dimensional flow compared with the experiment result and other numerical calculation results.The fluid phenomenon that was able to adjust to the particle method could be judged by showing a variety of numerical calculation results of this research.(1)Flow analysis around 3-dimensional plate that moved suddenlyA transitional fluid phenomenon was simulated by this method.As a result, it was clear that rapid phenomenon can be calculated by MPS.(2)Spray phenomenon when surface of the water collides by falling objectA triangular pillar was dropped, and the spray phenomenon momentarily generated when colliding with the surface of the water was simulated.As a result, the agreement with high accuracy could be seen compared with the experimental photograph with a high-speed camera.(3)Movement after surface of the water collides of falling objectThe hexahedron was diagonally discharged, and the fall to the surface of the water and the movement afterwards were simulated.As a result, a qualitative agreement was seen compared with the experiment result with the object with shape that looked like the hexahedron.(4)Three-dimensional rotational wings with simple shapeA basic calculation of the three-dimensional rotation wing was executed by using the hexahedron for the wing of the rotational wing.Physical validity could be obtained by changing to the shape with pitch from original shape without pitch although it was difficult to model the rotational wings with the pitch in the particle method.

这项研究最初将现有的二维粒子方法计划更改为三维粒子方法代码，并且与实验结果和其他数值结果相比，有关以下三维流量和其他数值现象的表现，能够调整粒子的流体现象可以通过该研究的流动性来判断。这种方法是通过这种方法模拟的。结果，很明显，可以通过MPS计算快速现象。（2）当水面通过落下的物体落下的物体三角形柱子碰撞时喷雾现象被掉落，并且在与水面碰撞时相碰到的效果相吻合时，与高度相吻合时，在与水的表面相碰撞时会产生的喷雾现象，相比之下。落下物体的水碰撞六面体被对角线排出，掉落到水面和后来的移动。结果，结果是，与实验结果相比，与实验结果相比，具有六面体的实验结果。（4）使用三维旋转的三维旋转旋转的旋转旋转的旋转旋转，而三维的旋转旋转是旋转的，这是三维旋转的旋转量，并实现了三维旋转的旋转，并将其执行的旋转率构成了旋转的旋转，而旋转的旋转率是旋转的旋转量。旋转机翼。物理有效性可以通过从原始形状从原始形状转换为形状，尽管很难用粒子方法中的螺距建模旋转机翼。