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Numerical study on transverse asymmetry in the temperature profile of a regenerator in a pulse tube cooler

机译:脉冲管冷却器中蓄热室温度分布的横向不对称数值研究

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摘要

Transverse asymmetry in the temperature profile of the regenerator in a Stirling-type pulse tube cooler as observed in experiments was analysed in a numerical study. The asymmetry was reproduced using a one-dimensional model of the cooler where the regenerator was modelled using two identical parallel regenerator channels. The asymmetry was caused by a circulating flow that was superimposed on the oscillating flow. The primary mechanism driving the circulating flow was due to the wave form of the pressure difference between the ends of the regenerator and the dependence of the instantaneous mass flow rate on the pressure difference and temperature.
机译:在数值研究中分析了实验中观察到的斯特林型脉冲管冷却器中蓄热室温度分布的横向不对称性。使用冷却器的一维模型重现不对称性,其中使用两个相同的平行再生器通道对再生器进行建模。不对称性是由循环流叠加在振荡流上引起的。驱动循环流的主要机理是由于蓄热室两端之间压力差的波形以及瞬时质量流量对压力差和温度的依赖性。

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