回热器的热声直流模型及其效应研究

STUDY ON THERMOACOUSTIC STREAMING MODEL OF A CYCLIC REGENERATOR AND ITS EFFECTS

本文由基本的守恒方程出发,获得了能描述回热器存在声直流时的非线性动力学模型及由此而导致的非线性时均热力学效应。根据所得到的模型,考察了声直流对临界声功产生率温度梯度、回热器温度分布以及脉冲管制冷性能的影响。

Based on basic conservation equations, the paper derived the thermoacoustic streaming model of a cyclic regenerator and discussed some nonlinear, time-averaged thermodynamic effects. Ac-cording to the model, the paper analyzed the critical temperature gradient of acoustic work generation for a thermoacoustic prime mover, the temperature distribution of a regenerator and the refrigeration capacity for a pulse tube refrigerator by thermoacoustic streaming effects.