INVESTIGATION ON THE ACOUSTIC FIELD MATCHING OF THERMOACOUSTIC-ENGINE

It is given the phase relational expression between the sound pressure and velocity of sound based on the standing wave principle of the thermoa coustic effect in the Thermoacoustic-engine.The conclusion is that the acoustic field is mixed the standing wave with traveling wave in the Thermoacousticengine.In order to improve the efficiency,it is control the ratio of the traveling wave in the mix sound field by using the difference the working gas and the stack.