Numerical investigation of a thermoacoustic engine core via heat transfer calculations coupled with acoustic field analyses

Thermoacoustic engines are generating increased interest due to their potential use in renewable energy systems. The heat transfer characteristics of such engine cores were examined this study via numerical simulations, taking into consideration the interactions between acoustic field and thermal motion fluids a thermoacoustic device. Our calculations based on conservation equation under assumption periodically steady oscillatory flow linear theory. temperature core was numerically solved by applying finite difference method (FDM) equation, also compared with CFD results. To systematically clarify core, dimensional analyses for associated geometries physical values performed, nondimensional parameters selected determine characteristics. simulation performed using these parameters, correlations local Nusselt number distributions some considered. Based among characteristics, model constructed predicting gap wall fluid at edge regenerator. This satisfactory when Reynolds ranged from 30 120 relaxation time 0.3–1.3.