圆球势流绕流的有限元方法  

Potential flow around sphere by FEM

作　　者：黄璐[1] 陈立[1] 邱辽原[1] 许辉[1] 

机构地区：[1]中国舰船研究设计中心,湖北武汉430064

出　　处：《舰船科学技术》2014年第9期65-68,73,共5页Ship Science and Technology

摘　　要：研究利用有限元方法解钝体绕流,利用有限元方法对钝体绕流进行数值编程求解,为简化计算,只求解理想不可压无旋绕流问题,以圆球绕流为研究对象,进行轴对称流动等参数有限元分析,对流场进行不同密度网格划分,比较不同网格密度下圆球绕流场的流线和压力场分布情况。计算结果表明,有限元法可以很好地得出圆球势流场的物理量分布,不同的网格密度对有限元法的求解会产生明显的影响,网格越密求解的流场精度越高,越接近真实的流动情况。This paper study the flow around blunt bodies,using finite element method to solve the flow around blunt bodies. This article simplify the flow as ideal incompressible irrational flow,takes the flow around ball as study object,analyzes the axisymmetric flow through the method of isoperimetric finite elements,meshes the flow field,compares the streamline and pressure field distribution of different mesh.The numerical solutions show that FEM can simulate the distribution of physical quantity. Different mesh density has impact influence on the solution,the denser the mesh,the higher the solution accuracy,and more close to the real flow.

关 键 词：圆球绕流 有限元法 网格密度 

分 类 号：O351.3[理学—流体力学]