激光技术2011，Vol.35Issue(2)：230-233,263,5.DOI:10.3969/j.issn.1001-3806.2011.02.024
3股互击式喷注器混合特性的数值模拟
Numerical study of mixing characteristics of triplet impingement injectors
靳冬欢 1刘文广 1陆启生1
作者信息
- 1. 国防科学技术大学光电科学与工程学院,长沙,410073
- 折叠
摘要
Abstract
In order to enhance mixing effect, two novel styles of triplet impingement injectors were presented by changing middle jet orifice or the other two jet orifices into cone-shaped orifices.Flow field characteristics of above-mentioned two kinds of injectors and traditional injectors with triple straight-wall jet orifices under conditions of fuel-oxidizer-fuel triplet arrangement were analyzed based on 3-D computational fluid dynamic methods.The numerical simulation results demonstrate that mixing of triplet impingement injectors is principally accelerated by transverse vortices.For the injector with cone-shaped oxidizer jet orifice, the vertex intensity of flow field is lower than that of the injector with triple straight-wall jet orifices.For the injector with cone-shaped fuel jet orifices, there is a definite increase of the vertex intensity of flow field.Mass-weighted average unmixedness was introduced to evaluate the mixing performances of three kinds of injectors.It is indicated that the mixing effect of injector with cone-shaped fuel jet orifices is better than that of injector with triple straight-wall jet orifices and the injector with cone-shaped oxidizer jet orifice is the worst of three.For injector design of chemical laser combustors, oxidizer and fuel jet orifices adopt different styles, for example, the injector with cone-shaped fuel jet orifices, which helps improve mixing effect of oxidizer flow and fuel flow further.关键词
激光器/3股互击式喷注器/数值模拟/未混合度/直孔/锥形孔Key words
lasers/ triplet impingement injector/ numerical simulation/ unmixedness/ straight wall orifice/ cone-shaped orifice分类
信息技术与安全科学引用本文复制引用
靳冬欢,刘文广,陆启生..3股互击式喷注器混合特性的数值模拟[J].激光技术,2011,35(2):230-233,263,5.
