强激光与粒子束2011，Vol.23Issue(3)：623-626,4.DOI:10.3788/HPLPB20112303.0623
主喷管叶片中热壁面对分流管道流场特性的影响
Effects of hot wall on flow field characteristics of distribution flow pipeline in primary nozzle blade
靳冬欢 1刘文广 1华卫红 1李兰 1陈星 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
The wall of secondary gas flow distribution pipeline in primary nozzle blade will be heated during CW chemical laser operation. Effects on flow field characteristics of distribution flow pipeline with hot wall boundary under conditions of single end or double ends gas supply were analyzed based on three-dimension computational fluid dynamics methods. The hot wall boundary makes the total temperature of general pipeline higher and higher along the direction of main gas flow movement, and the total temperature of branch pipeline inlet goes up simultaneously, which results in corresponding decrease in mass flow rates of branch pipeline outlets. The fluctuating amplitude of mass flow rates of branch pipeline outlets with hot wall boundary is bigger than that with adiabatic wall boundary, and the maximal fluctuating amplitude goes up to 2.16％. In addition, two methods that will effectively alleviate the fluctuation of mass flow rates owing to total temperature's increasing of branch pipeline were presented. One is increasing total temperature of gas supply reasonably; the other is separating gas-cooled pipelines from gas supply pipelines.关键词
化学激光器/分流管道/计算流体力学/热壁面/总管/支管Key words
chemical laser/ distribution flow pipeline/ computational fluid dynamics/ hot wall/ general pipeline/ branch pipeline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,华卫红,李兰,陈星,陆启生..主喷管叶片中热壁面对分流管道流场特性的影响[J].强激光与粒子束,2011,23(3):623-626,4.
