li lan, yuan shengfu, hua weihong, et al. Numerical analysis of nozzle flow field with gaseous film cooling in CW DF/HF chemical laser[J]. High Power Laser and Particle Beams, 2010, 22.
Citation:
li lan, yuan shengfu, hua weihong, et al. Numerical analysis of nozzle flow field with gaseous film cooling in CW DF/HF chemical laser[J]. High Power Laser and Particle Beams, 2010, 22.
li lan, yuan shengfu, hua weihong, et al. Numerical analysis of nozzle flow field with gaseous film cooling in CW DF/HF chemical laser[J]. High Power Laser and Particle Beams, 2010, 22.
Citation:
li lan, yuan shengfu, hua weihong, et al. Numerical analysis of nozzle flow field with gaseous film cooling in CW DF/HF chemical laser[J]. High Power Laser and Particle Beams, 2010, 22.
连续波DF/HF化学激光器气膜冷却式喷管流场数值分析
李 兰， 袁圣付， 华卫红， 姜宗福
(国防科学技术大学 光电科学与工程学院, 长沙 410073)
摘要：在连续波DF/HF化学激光器主喷管收缩段采用气膜冷却方式，从3维离散小孔注入氦气射流以隔离壁面和主气流。通过对3种气膜孔排布方式下喷管内主气流状态进行数值模拟研究，分析氦气与主气流之间的相互作用，比较了不同方式下主气流氟原子冻结效率及壁面冷却效果。考虑到DF/HF化学激光器主喷管结构尺寸较小，采用适当间隔的单排圆孔注入是现实可行的,并有望达到较好的冷却保护效果，从而提高激光器运转效率。
关键词： 连续波DF/HF化学激光器； 喷管； 气膜冷却； 数值模拟
Numerical analysis of nozzle flow field with gaseous film cooling in CW DF/HF chemical laser
Li Lan, Yuan Shengfu, Hua Weihong, Jiang Zongfu
(College of Opto-Electronic Science and Engineering, National Un
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