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旋转流中小扰动波与导叶相互干涉的三维数值计算

发表时间:2010-07-31  浏览量:1357  下载量:690
全部作者: 甘加业,黄雪芬,吴克启
作者单位: 华中科技大学煤燃烧国家重点实验室
摘 要: 通过求解三维线化欧拉方程,研究包含无粘可压缩旋转流管道中小扰动波与无载荷环型叶栅相互干扰的现象。采用正则模态分析方法把入射波分解为近似音速及近似对流的扰动,用优化的紧致差分格式对空间导数进行离散,利用经典的四阶Runge�Kutta法求解积分函数。通过一个标准问题的计算来验证算法的可靠性,最后给出不同条件下的声学及气动结果,探讨旋流对流道中声模态及叶片上气动响应的影响。
关 键 词: 流体机械及流体动力工程;转子/静子干涉噪声;计算气动声学;正则模态分析;无反射边界条件
Title: 3D numerical calculation of the interfere between small disturbance waves in swirling flow and guide vane
Author: GAN Jiaye, HUANG Xuefen, WU Keqi
Organization: State Key Laboratory of Coal Combustion, Huazhong University of Science & Technology
Abstract: By solving the three�dimensional linearized Euler equations, this paper researched the interference phenomenon between small disturbance waves and no�load annular cascade. The small disturbance waves was contained no viscous, compressible swirling flow in pipes. It uses regular modal analysis method, and the incident wave is decomposed into approximate speed of sound and approximate convective disturbances. And optimized compact scheme was used for spatial derivative discretization. Integral function is solved by the classical fourth�order Runge�Kutta method. First, it verify the reliability of calculation method through a calculation to a standard problem. Finally, it gives acoustic and aerodynamic results under different conditions. This is used to explore the influence of swirling flow acted on the sound mode in channel and the aerodynamic response of blades.
Key words: fluid machinery and fluid engineering; rotor/stator interference noise; computational aeroacoustics; canonical modal analysis; non�reflecting boundary condition
发表期数: 2010年7月第14期
引用格式: 甘加业,黄雪芬,吴克启. 旋转流中小扰动波与导叶相互干涉的三维数值计算[J]. 中国科技论文在线精品论文,2010,3(14):1441-1445.
 
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