A numerical model for simulating the oscillating flow characteristics in a high frequency miniature pulse tube refrigerator was developed.
利用数值方法模拟了高频微型同轴脉冲管制冷机内部气流交变流动和换热过程。
The oscillating flow characteristics of the test section are obtained by the analysis of the amplitude and phase shift of the velocity and the pressure wave.
通过测量阻力元件两端的动态压力、流速，得到交变流动情况下动态压力与质量流量之间振幅和相位关系，从而得到所测元件的交变流动阻力特性。
The oscillating flow characteristics of the test section are obtained by the analysis of the amplitude and phase shift of the velocity and the pressure wave.
通过测量阻力元件两端的动态压力、流速，得到交变流动情况下动态压力与质量流量之间振幅和相位关系，从而得到所测元件的交变流动阻力特性。
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