热声热机起振过程中回热器内气体的温度分布

Distribution of temperature in regenerator of a thermoacoustic engine

文中研究了驻波型热声发动机回热器内的气体,研究时段为从加热到起振前的过程,对气体在此时段内建立数学模型并加以分析。通过求解该模型,得出了回热器内不同时间和位置点的温度变化,其计算结果与实验数据相吻合。最后对模型简化导致的误差进行了分析修正。

The gas in a standing - wave thermoacoustic engine＇s regenerator is studied. By simplification and hypothesis, a mathematical model of the gases＇temperature is established and analyzed in the duration from being heated to onset. After that, an equation of temperature about time and axial location is given in this paper. By analysis of the equation and compare to the experimental results, it is very proved consistent with the experimental results. This paper also correct the error caused by the simplification and hypothesis.