Abstract
A miniature cascade thermoacoustic engine had been designed and tested, which length was about 1 m, operating at 500 Hz. Pilot study and experimental results shown a rather good agreement between measured and calculated pressure fields and temperatures distributions in the thermoaoustic engine. The peak-to-peak value of the acoustic pressure was 0.02 MPa at the 1.8 MPa charged pressure of helium. Some efforts had been made to extend the traveling-wave region based on the analysis of the acoustic impedance.
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