一种模拟喷管二维流场的新方法

推进技术 ›› 1995, Vol. 16 ›› Issue (2): 21-25.

一种模拟喷管二维流场的新方法

严红,何洪庆

西北工业大学航天工程学院;西北工业大学航天工程学院

发布日期:2021-08-15

A NEW METHOD TO SIMULATE THE TWO DIMENSIONAL FLOW IN NOZZLES

Aerospace Engineering Inst., Northwestern Polytechnical Univ.,Xi’an,710072;Aerospace Engineering Inst., Northwestern Polytechnical Univ.,Xi’an,710072

Published:2021-08-15

摘要/Abstract

摘要： 采用ＳＩＭＰＬＥ方法对固体火箭发动机喷管进行了纯气相流场的数值模拟。推导了建立在同位网格之上利用协变物理速度分量为计算变量的离散方程；采用协变物理速度分量推导压力修正方程；对密度采用一阶迎风格式插值，将ＳＩＭＰＬＥ方法扩大到计算可压流动。计算结果表明：本方法计算精度高，收敛速度快、程序编写简单。

关键词: 喷管气流;二维流;流动分布;数值模拟

Abstract: IMPLE algorithm is presented for the two-dimensional compressible flow in solid propellant rocket nozzles.The covariant physical velocity components are applied as the primary dependent variables to deduce the differencial equations on the unstaggered grid system and also corrected-pressure equation.SIMPLE algorithmis developed for the compressible flow when one-order upwind scheme is applied for the density.The results show that this method improves the calculation accuracyand accelerates the convergent speed.

Key words: Nozzle gas flow;Two dimensional flow;Flow distribution;Numerical simulation

严红,何洪庆. 一种模拟喷管二维流场的新方法[J]. 推进技术, 1995, 16(2): 21-25.