轴对称矢量喷管内流特性的不同湍流模型计算

推进技术 ›› 2003, Vol. 24 ›› Issue (4): 326-329.

轴对称矢量喷管内流特性的不同湍流模型计算

罗静,王强,额日其太

北京航空航天大学能源与动力工程学院北京100083;北京航空航天大学能源与动力工程学院北京100083;北京航空航天大学能源与动力工程学院北京100083

发布日期:2021-08-15

Computation for the effect of turbulence models on internal performance for axisymmetric vectoring exhaust nozzles

School of Jet Propulsion, Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, China;School of Jet Propulsion, Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, China;School of Jet Propulsion, Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, China

Published:2021-08-15

摘要/Abstract

摘要： 利用二阶迎风格式,在采用三种不同湍流模型分别对轴对称矢量喷管三维内流场进行对比计算后,S A一方程模型成为文中数值模拟中最有效的湍流模型,并将此模型计算的结果与模型试验结果进行了分析比较。研究结果表明,在矢量状态下,计算结果和试验结果相比,气动矢量角的相对误差不大于6%,流量系数的相对误差不大于1%,推力系数的相对误差不大于1%,所开发的计算方法可用于轴对称矢量喷管的工程设计。

关键词: 湍流模型;矢量喷管+;流动特性;数值仿真

Abstract: After comparing the results of three different turbulence models in computing 3-D internal flow field of axisymmetric vectoring exhaust nozzles (AVEN) by means of second order upwind schemes, S-A turbulence model became the validest turbulence model used in numerical simulation here, and its results of computation were compared with that of scale model experiments. The results indicated that during nozzle vectoring the relative tolerance of resultant vector angle is less than 6% and the relative tolerance of discharge coefficient is less than 1%. In addition, the relative tolerance of thrust coefficience is less than 1%.

Key words: Turbulence model;Vectoring nozzles~+;Flow characteristic;Numerical simulation

罗静,王强,额日其太. 轴对称矢量喷管内流特性的不同湍流模型计算[J]. 推进技术, 2003, 24(4): 326-329.