Numerical Studies of the Onset Temperature Ratio for Spontaneous Gas Oscillation in a Thermoacoustic Engine with a Looped Tube and Resonator

Abstract

The onset temperature ratio for spontaneous gas oscillation occurring in a thermoacoustic engine with a looped tube and resonator was calculated. The calculated result was compared with actual measurement and a quantitative agreement between them was obtained. Further, the effect of changing the shape of the thermoacoustic engine on the onset temperature ratio was numerically investigated. As a result, the optimum shape to realize a low onset-temperature ratio was determined.