有限空间轴对称射流流场的数值模拟

NUMERICAL SIMULATION OF FLUIDIC FIELD OF THE AXISYMMETRIC CONFINED SPACE JET

本文在k-ε紊流模型下,采用罚有限元法对有限空间轴对称射流流场进行数值模拟。引用罚函数优化迎风格式和退化积分,建立有限元解法的数值矩阵,在不同截面上求得速度、压力和紊流参数分布,计算结果与实验数据十分接近。本文研究结果可应用于火箭发动机的喷射器设计和射流理论的研究。

In this paper, numerical simulation of fhlidic field of the axisymmetric confined space jet with k-e turbulent model are performed by the penalty finite element method. Author introduces the penalty function, optimal upwind and vduced integration et, the numerical matrixs of finite element of the solution are estabished. The colculated results concerning distbioution of velocity , pressure, turbulent parameters at different cross sections ane obtained , and good agreetmentwith the pervious experiment data. At the end of this paper,the research,results are used to design for ejector of rocket motor and theory study of jet.