角点处理的特征无反射边界条件直接数值模拟  

Treatment of Corners in Characteristic Non-Reflecting Boundary Conditions by Direct Numerical Simulation

作　　者：李德波[1] 杨建山[2] 樊建人[2] 罗坤[2] 岑可法[2] 

机构地区：[1]广东电网公司电力科学研究院,广州510060 [2]浙江大学热能工程研究所,能源清洁利用国家重点实验室,杭州310027

出　　处：《动力工程学报》2013年第1期31-36,共6页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金重点资助项目(50736006)

摘　　要：对特征无反射边界条件中角点耦合处理方法进行了分析,提出了新的角点耦合处理数学方法.对空间发展的可压缩圆孔射流进行数值模拟,并将模拟结果与试验值进行了对比.结果表明:新的角点耦合处理数学方法在处理声波反射方面是有效的,数值模拟结果与试验值吻合较好.Based on analysis of the coupling treatment method for corners in characteristic non-reflecting boundary conditions, a new mathematical method for corner coupling treatment is put forward. Numerical simulation has been conducted on a spatially evolving compressible round jet and the simulation results are compared with experimental data. Results show that the new mathematical method for corner coupling treatment is effective in the aspect of acoustic reflection treatment and the simulation results properly fit the experimental data.

关 键 词：特征无反射边界条件 圆孔射流 声波反射 耦合角点边界条件 数值模拟 

分 类 号：O422.3[理学—声学]