模拟结果表明，在高于功产生的临界温度梯度时，波动压力振幅被显著放大。
The simulation result shows that the dynamic pressure amplitude was amplified obviously when the temperature gradient was above the critical value.
本文讨论了丝网型回热器能在纯行波状态下起振的临界温度梯度与结构参数及运行参数的关系。
This paper analyses the critical temperature gradient of a regenerator under a simplifying assumption for different structure and operating parameters.
还研究了压力梯度对临界雷诺数的影响，探讨了不同压力场对流动稳定性作用的规律性。
The effect of the pressure gradient on critical Reynolds number is also displayed and the influence rule of the different pressure fields on the flow stability is exploited.
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