固体火箭技术2017，Vol.40Issue(5)：562-568,7.DOI:10.7673/j.issn.1006-2793.2017.05.005
固体火箭发动机喷管扩张段粒子冲刷流场分析
Particle erosion flow field analysis on nozzle divergent section of SRM
苗志文 1甘晓松 1许团委 1晁侃1
作者信息
- 1. 中国航天科技集团公司四院四十一所,西安 710025
- 折叠
摘要
Abstract
Particle erosion marks related to grain fin slots were observed on nozzle divergent section of a finocyl grain SRM after experiments. The main purpose of this research is to investigate the law of particle erosion at the nozzle divergent section and im-prove the nozzle profile. Effects of turbulence models and particle tracking models on particle erosion were compared. The features of Two-phase flow at the nozzle divergent section were analyzed. The diameter of particles that are relevant to erosion marks was esti-mated. The time interval of particle erosion was determined. Furthermore, the improved solution of nozzle profile was proposed. The results shows that the particle erosion marks on nozzle divergent section appear after 15 s'working process of the SRM. They were mainly caused by the particles among aft-fin combustion products ranging from 10μm to 16μm. The improved nozzle profile could decrease the particle erosion effectively.关键词
固体火箭发动机/翼柱形药柱/粒子冲刷/喷管扩张段Key words
solid rocket motor/finocyl grain/particle erosion/nozzle divergent section分类
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苗志文,甘晓松,许团委,晁侃..固体火箭发动机喷管扩张段粒子冲刷流场分析[J].固体火箭技术,2017,40(5):562-568,7.
