光子学报, 2020, 49 (3): 0314001, 网络出版: 2020-04-24   

喷流冷却复合陶瓷薄片激光器的热特性仿真分析及实验研究

Simulation and Experiment of Thermal Characteristics of a Jet Cooling Composite Ceramic Thin-disk Laser
作者单位
1 西南技术物理研究所, 成都 610041
2 四川大学 电子信息学院, 成都 610065
摘要
为分析喷流冷却复合陶瓷薄片激光器的热特性,设计用于冷却复合陶瓷薄片的喷流冷却系统.利用湍流换热理论和计算流体动力学仿真方法建立喷流冷却复合陶瓷薄片激光器的流固耦合热仿真模型,定义评价其冷却能力和冷却均匀性的定量参数.根据该仿真模型得到喷流冷却系统的最优设计参数,并进行实验验证.使用163孔喷板,流量为0.2 kg/s,入口温度为20℃,在1 200 W泵浦时获得359 W激光输出功率,并测得复合陶瓷薄片上表面的最高温度为92℃.激光输出功率与复合陶瓷薄片上表面温度均与泵浦功率呈近似正线性关系,且温度的实验值与仿真值相符度较高.
Abstract
In order to analyze the thermal characteristics of a jet cooling thin-disk composite ceramic laser, the jet cooling device for a composite ceramic thin-disk laser is designed. A systematic simulation model is developed by using the turbulent heat transfer theory and computational fluid dynamics method. Two evaluation parameters are defined for the cooling capacity and uniformity of the designed jet cooling device. The optimal parameters of the jet cooling device are obtained by using the simulation model, and a verification experiment is carried out afterward. In the experiment, a jet plate with 163 holes is adopted, the inlet coolant flow rate and temperature are set to be 0.2 kg/s and 20℃, respectively. When the pump power is raised to 1 200 W, the output power of 359 W has been achieved, and the maximal temperature on the upper surface of the thin-disk composite ceramic detected by a thermal camera has reached to 92℃. It is also demonstrated that there have been approximate positive linear relationships between the pump power and both the output power and the temperature on the upper surface of the thin-disk of composite ceramic, and the experimental temperature value shows good agreement with simulated value.

郭嘉伟, 贾凯, 杨峰, 彭春, 汪晓聪, 刘晓旭, 韩聚洪, 荣克鹏, 安国斐, 蔡和, 王浟. 喷流冷却复合陶瓷薄片激光器的热特性仿真分析及实验研究[J]. 光子学报, 2020, 49(3): 0314001. Jia-wei GUO, Kai JIA, Feng YANG, Chun PENG, Xiao-cong WANG, Xiao-xu LIU, Ju-hong HAN, Ke-peng RONG, Guo-fei AN, He CAI, You WANG. Simulation and Experiment of Thermal Characteristics of a Jet Cooling Composite Ceramic Thin-disk Laser[J]. ACTA PHOTONICA SINICA, 2020, 49(3): 0314001.

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