高频蓄冷器流动阻力特性实验分析

Experimental Analysis of the Oscillating Flow Characteristics for High Frequency Regenerator

给出了50Hz的高频蓄冷器的交变流动阻力特性实验结果。以雷诺数和无因次距离为准则数拟合了交变流动蓄冷器最大和平均压降因子的准则关系式。与稳态经验公式得出的压力降的值进行比较，发现交变流动蓄冷器的压力降为稳态流动的2～3倍。同时，也分析了不同丝网目数所对应的极值雷诺数以及因次相位差的准则关系式。

In this paper, details experimental data of oscillating pressure drops and phase shift characteristics of 50Hz high frequency regenerators were presented. The correlation equation for the maximum and cycle - average pressure drops factors in terms of Reynolds number Re and dimensionless distance X were abtained. It is found that value of the cycled - averaged pressure drop of the oscillating flow in regenerator is 2 to 3 times higher that of a steady flow at the same Reynolds numbers. In addition, the relationship of the phase shifts between the velocity and pressure wave were also abtained.