高效欧拉方程解法求解轴对称引射喷管三股流问题

推进技术 ›› 1997, Vol. 18 ›› Issue (2): 56-60.

高效欧拉方程解法求解轴对称引射喷管三股流问题

彭钧,余少志

南京航空航天大学动力工程系!南京;210016;南京航空航天大学动力工程系!南京;210016

发布日期:2021-08-15

AN EFFICIENT EULER EQUATION SOLVER FOR THREE STREAMS IN AN AXISYMMETRICAL EJECT NOZZLE

Dept. of Power Engineering, Nanjing Univ. of Aeronautics and Astronautics, Nanjing, 210016;Dept. of Power Engineering, Nanjing Univ. of Aeronautics and Astronautics, Nanjing, 210016

Published:2021-08-15

摘要/Abstract

摘要： 推导了三维流动的广义欧拉方程黎曼增量梯度形式的欧拉方程及其轴对称形式表达，针对引射喷管三股流问题的特点在运动网格下作了H变换。在此基础上将高效欧拉方程解法应用于求解轴对称引射喷管三股流问题，为解决次流通道狭窄带来的问题，采用了弱耦合法处理滑流边界。

关键词: 欧拉方程;轴对称射流;引射喷管

Abstract: An efficient Euler eqution solver was used to compute flow fields of axisymmetricaleject nozzles, including primary, secondary & external streams. A moving H-grid was adopted to fitcontact discontinuities. The usual boundary treatment often suffered from computation destablizingsince the eject channel became narrow. An approach of boundary weak-couplinng was presented tosurmount this difficulty.

Key words: Euler equation;Axisymmetricjet;Shrouded nozzle

彭钧,余少志. 高效欧拉方程解法求解轴对称引射喷管三股流问题[J]. 推进技术, 1997, 18(2): 56-60.