External acoustic load on the performance of a travelling-wave thermoacoustic engine

摘要

In this paper, external acoustic loads on the performances of a quarter-wavelength traveling-wave thermoacoustic pressure generator are analyzed. First, we derived the maximal frequency and the critical temperature gradient of the thermoacoustic systems by analyzing the conversion between passive network and active network. Then, we considered the effect of the external loads on operating frequency and obtain some qualitative results.