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Hypersonic Real-Gas Effects on Transition

机译:过度的实际气体效应转变

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Some of the results of an extensive research program into the effects on transition of the vibrational and chemical relaxation processes that occur in high-enthalpy flows are presented. Relaxation effects are found to influence transition significantly, with increases of the transition Reynolds number by up to a factor of five. The mechanism responsible for this transition delay is shown to be the damping of the acoustic second mode instability by relaxation processes. Transition is also found to be further delayed by up to a factor of two by suitable wall porosity.
机译:提出了一个广泛的研究计划的一些结果,进入高焓流动发生的振动和化学松弛过程的转变。发现放松效果显着影响过渡,过渡雷诺数量增加到五倍。负责该过渡延迟的机制被示出为通过松弛过程阻尼声学第二模式不稳定性。还发现过渡进一步通过合适的壁孔隙率进一步延迟多倍。

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