激光与光电子学进展, 2011, 48 (10): 101402, 网络出版: 2011-09-01
化学激光器喷管列阵入口流场的数值模拟
Numerical Simulation of Flow Field at Entrance of Nozzle Bank in Chemical Laser
化学激光器 流动特性 守恒元与求解元方法 喷管列阵 chemical laser flow characteristic conservation element and solution element method nozzle bank
摘要
为了研究化学激光器喷管列阵入口流场的变化特性,建立了适合于该流场特点的数学物理模型。该模型以化学激光器实验装置为基础,其喷管列阵分别由3个和4个单独的喷管构成。应用二维黏性守恒元与求解元(CE/SE)方法对该数值模型进行了计算模拟。结果表明,CE/SE方法能有效地模拟该流场中高温燃气的流动过程;流场达到稳定后计算得到的相关参数与实验结果基本吻合;对单一的喷管而言,流场中的相关参数(如压力、速度等)分布具有一定的对称性,其结果可以扩展至由更多单一喷管组成的喷管列阵。
Abstract
In order to investigate the characteristic of the flow field at the entrance of the nozzle bank in a chemical laser, a physical and numerical model which is compatible with the flow was established. The model based on experimental equipment contained two types of nozzle bank with three nozzles and four nozzles, respectively. The two-dimensional viscous conservation element and solution element (CE/SE) method was used to calculate the numerical model. The results show that the CE/SE method can simulate the flow process of the high temperature burned gas effectively. The parameters gained from the simulation accord with the experimental data as the flow reaches stable. To a single nozzle, the related parameters(such as pressure and velocity) distribution in the flow field is symmetrical, which can be extended to the nozzle bank with more nozzles.
王杰, 翁春生, 尹燕华, 郭建增, 颜飞雪. 化学激光器喷管列阵入口流场的数值模拟[J]. 激光与光电子学进展, 2011, 48(10): 101402. Wang Jie, Weng Chunsheng, Yin Yanhua, Guo Jianzeng, Yan Feixue. Numerical Simulation of Flow Field at Entrance of Nozzle Bank in Chemical Laser[J]. Laser & Optoelectronics Progress, 2011, 48(10): 101402.