缝槽气膜冷却流动特性的最小介入扰动诊断的实验研究
The performance of a propulsion system is directly proportional to its operatingtemperature therefore, an optimum operation regime will undoubtedly generateintense thermal loads on system components. If the system is designed for reusabilityand/or long range missions, it may be necessary to perform active cooling of criticalcomponents to prevent premature failure of the system. One such method is filmcooling, in which a layer of relatively cool gas is injected near the surface to beprotected. This work describes the use of minimally intrusive diagnostics tocharacterize the kinematics, thermal dynamics and heat transfer of slot film coolingflows over a wide range of blowing ratios, generating a comprehensive database fordetailed analysis, as well as for further use by model developers.