Heat transfer performance of water jet cooled mirror and its application in high power chemical lasers

The test model of water jet cooled copper mirror was made and temperature measurement of the mirror was carried out. The temperature uniformity of the water jet cooled copper mirror was proved by the measurements of infrared camera and experimental results of thermocouples agree well with the results of numerical simulation, which verified the reliability of the numerical model. The deformation characteristics of the water jet cooled mirror and the linear-channel water cooled mirror were analyzed in the scenario of high power chemical lasers. The results show that the water jet cooled mirror can be well used in high power chemical lasers and the mirror must be processed under certain pressure. In addition,the diameter and number of cooling holes were further analyzed to explore their effects on the deformation of water jet cooled mirror in high power chemical lasers. More holes with larger diameter lead to better cooling effects.