论文部分内容阅读
DF/HF化学激光器需要体积庞大的压力恢复系统才能够工作。为了综合考虑激光器和压力恢复系统一体化设计,对DF/HF化学激光器的两种喷管的内流场采用了CFD技术进行了模拟,比较了它们的总压损失的差别和内流场的不同,并讨论了这种不同对整个激光器性能的影响。计算结果表明,细喉道的喷管不但有利于减小激光器增益发生器的尺寸,而且它的总压损失近似于标准喷管,从而不会增加激光器后部压力恢复系统的体积。
DF / HF chemical lasers require bulky pressure recovery systems to work. In order to consider the integrated design of laser and pressure recovery system, CFD technology was used to simulate the internal flow field of two kinds of nozzles of DF / HF chemical lasers. The differences of total pressure loss and internal flow field were compared And discusses the impact of this difference on the overall laser performance. The results show that the fine throat nozzle not only helps to reduce the size of laser gain generator, but also its total pressure loss is similar to that of standard nozzle, so it does not increase the volume of laser rear pressure recovery system.