强激光与粒子束2017，Vol.29Issue(8)：21-28,8.DOI:10.11884/HPLPB201729.170033
水力入口段对流体直接冷却片状激光器热效应的影响
Thermal effects induced by hydraulic entrance in liquid direct cooled thin disk laser
摘要
Abstract
In the Nd: YAG thin disk laser system, there is a hydraulic entrance distance when the fluid flows through the gain medium.By using the Ansys simulation software, the influence of the different hydraulic entrance distances on the heat transfer coefficient of the fluid was discussed.The influence of the hydraulic entrance distance on the thermal stress and the beam transmission was analyzed.The cooling effect of different coolant is simulated.When the fluid was in different flow state, the relationship between the hydraulic entrance distance and the heat transfer coefficient of the fluid was studied, while the relationship between the hydraulic entrance distance and the temperature of the medium was also studied.The range of the optimal hydraulic entrance distance was obtained in the high power laser cooling system.The results show that when the fluid flows through the gain medium, the different hydraulic entrance distance only moves the heat transfer coefficient curve of the fluid regularly.Therefore, it can realize small temperature gradient in the medium, while reducing the thermal stress as well as the wavefront distortion by avoiding the distance region (0-2.25 mm) where the heat transfer coefficient curve changes greatly, and finally, achieve a better cooling effect.关键词
片状激光器/热交换系数/温度分布/应力分布/波前畸变/流体直接冷却Key words
thin disk laser/heat transfer coefficient/temperature distribution/thermal stress distribution/wavefront distortion/liquid direct cooling分类
信息技术与安全科学引用本文复制引用
王春阳,冯国英,杨火木..水力入口段对流体直接冷却片状激光器热效应的影响[J].强激光与粒子束,2017,29(8):21-28,8.基金项目
国家自然科学基金项目(61505129) （61505129）
