将射流水冷技术应用到高能激光器反射镜的冷却中,设计了射流式碳化硅水冷镜。利用通用有限元分析软件ANSYS的流体分析模块FLOTRAN,建立了流体对流换热系数和压力计算的二维模型,在验证模型可靠性的基础上计算了一定参数下的换热系数和压力分布。利用ANSYS中的多物理场分析模块,建立了水冷镜形变计算的三维模型,计算了相应的镜体温度和形变分布,比较了不同材料和不同类型水冷镜的性能。计算结果表明,射流式碳化硅水冷镜可以获得很小的镜面形变,同时具有结构简单、冷却均匀性好、抗压性好等优点,在高能激光器中具有较广阔的应用前景。 The jet water cooling technology is applied to the cooling of the high-energy laser mirror, a jet-type silicon carbide water cooling mirror is designed. A two-dimensional model of convective heat transfer coefficient and pressure was established by using FLATRAN, a fluid analysis module of the common finite element analysis software ANSYS. The heat transfer coefficient and pressure distribution under certain parameters were calculated based on the reliability of the model. Using the multi-physics analysis module in ANSYS, the three-dimensional model of water-cooling mirror deformation was established, the corresponding temperature and deformation distribution of the mirror body were calculated, and the performance of different materials and different types of water-cooling mirror were compared. The calculation results show that the jet silicon carbide water-cooled mirror can obtain a small mirror deformation, and has the advantages of simple structure, good cooling uniformity and good compressive resistance, and has a broad application prospect in high-energy lasers.