Design and Experiment Research on the Film Cooling of Optics Window at High Pressure and High Heat Flux
The optics window is usually faced with severe aerodynamic heating,and there is a prominent image saturation problem because of high temperature. Therefore,researchers often use film cooling to isolate the direct heat convection from the outflow. A tangential high-density cooling film generation structure is designed which is used for high pressure and heat flux. Through reasonable ground test,numerical simulation and engineering calculation,the main factors affecting the cooling efficiency are studied. The preliminary results show that tangential high density gas film can reliably reduce the surface heat at high pressure and high heat flux. The research effectively adapts to the increasingly harsh optical observation environment .
optics windowhigh pressure and high heat fluxfilm coolingactive heat reductiondesign and experiment
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