The Thermal State of a Packet of Cooled Microrocket Gas-Dynamic Lasers
2020
A complex physicomathematical model of heat transfer in packets of cooled microrocket gas-dynamic planar nozzles used for the pumping of gas-dynamic lasers is presented. A small size (~15 mm), due to which they are quickly heated up and require intense heat removal, is a specific feature of such rocket nozzles. The complex physicomathematical model of heat transfer and gas dynamics, as well as heating and cooling, is new, since all the physical processes are coupled at the boundary of a multiply connected domain. The cooling of high-temperature gas-dynamic lasers is one of the main problems in designing them. Numerical results for gas temperatures, the heat transfer coefficient, and cooler temperatures, as well as temperatures in the critical section of the nozzle, are obtained.
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