A theoretical analysis of radial wave thermoacoustic engines in cylindrical resonators is developed. Impedance and pressure translation equations are presented for open sections of the resonator and for heat exchangers. Coupled first-order differential equations are given for pressure and impedance in the temperature gradient supporting engine section ~stack!. These quantities are used to calcu...

Abstract Thermoacoustic devices are converters of thermal energy into acoustic and vice versa. Although these machines contain simple components, the design is very challenging. In order to predict behavior optimize efficiency a standing-wave thermoacoustic engine designed drive thermally driven refrigerator, considering changes in geometrical parameters operating conditions, two analogies have...

Introduction Thermoacoustic wave-generators are usually designed and optimized using software tools [1, 2] based on the linear thermoacoustic theory. These tools enable to predict the operating point of a thermoacoustic engine from the balance between the thermoacoustic amplification process and the numerous nonlinear effects saturating wave amplitude growth, the latter effects being very diffi...