回转体绕流场数值计算分析  

Numerical Analysis on Ambient Flow of Axisymmetric Body

作　　者：侯国祥[1] 张黎[1] 吴崇健[2] 陈荣[1] 

机构地区：[1]华中科技大学交通学院,湖北武汉430074 [2]中国舰船研究设计中心,湖北武汉430064

出　　处：《中国舰船研究》2007年第2期1-4,共4页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(50209003);973国家重点基础研究发展计划资助项目(2002CB412300)

摘　　要：采用有限体积方法求解三维低速N-S方程,研究了三维回转对称体的绕流。用中心差分和迎风差分的混合差分格式构造代数方程组,采用了隐式和显式相结合的方法使主对角元素占优,以提高迭代求解过程的稳定性。利用压力校正算法,采用面松弛迭代来实现方程的求解。湍流的计算采用了标准的双方程模型。给出了回转体的计算结果,与其它方法的计算结果的对比表明它们之间具有合理的一致性。The three-dimensional steady Reynolds-averaged N-S equations were solved numerically by a finite volume method and applied to study the flow around three-dimensional axisymmetric body. The finite volume equations were formulated in strong conservative form on a general, non-orthogonal grid system. The mixed differencing scheme was used to form the differencing equations. Only a part of the convection flux and diffusion terms were treated implicitly to improve the stability of the iterative solution procedure. Numerical predictions of the turbulence were obtained with the κ-ε model. The resulting equations were solved by pressure correction algorithm. The calculation results are presented in this report and compared with experimental data.

关 键 词：回转体 三维流场 N—S方程 湍流 数值计算 

分 类 号：U661.33[交通运输工程—船舶及航道工程]