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叙述了羽流效应地面模拟试验系统由高空模拟试车台向真空试验系统发展的过程,指出引射原理的局限性和低温冷凝技术的适用性.介绍了应用低温冷凝技术建成的美国CHAFF-4(the collaborative high altitude flow facility-Ⅳ)系统和德国STG(Simulationsanlage für Treibstrahlenin Gttingen)系统及中国首座大型羽流效应地面模拟试验系统——PES(the plume effects experimental system)系统.采用直接模拟蒙特卡罗DSMC(direct simulation Monte Carlo)方法对PES设备的内置式液氦深冷泵的抽气能力进行了数值模拟研究,结果表明无论有无羽流吸附泵时,2g/s级发动机点火时,内置式液氦深冷泵都能满足发动机出口截面后φ4m×5m范围内的背压小于10-3 Pa,羽流吸附泵能有效地阻止压缩波向喷管方向推进.
Describes the process of the development of the ground simulation test system of plume effect from high altitude simulation test bench to the vacuum test system and points out the limitations of the principle of injection and the applicability of low temperature condensation technology.The paper introduces the application of low temperature condensation technology to CHAFF-4 the collaborative high altitude flow facility-Ⅳ system and the Simulationsanlage für Treibstrahlenin Göttingen (STG) system in Germany and the PES (the plume effects experimental system) system, the first large-scale plume effects experimental system in China, DSMC (direct simulation Monte Carlo) method of PES equipment built-in liquid helium cryogenic pump suction capacity of the numerical simulation results show that with or without plume pump, 2g / s class engine ignition, built-in The liquid helium cryogenic pump can meet the outlet section of the engine after φ4m × 5m back pressure less than 10-3 Pa, plume suction pump can effectively prevent the compression wave to the nozzle direction.