Article | REF: BE8060 V1

Thermoacoustic converters - Thermoacoustic effect

Author: Philippe NIKA

Publication date: July 10, 2008

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4. Analysis of axial energy flows

A detailed study of the relationships between pressure, fluid velocity and energy flows provides a better understanding of the various energy conversions and degradations encountered in anisothermal oscillating flows. It will be necessary to include the longitudinal derivatives of pressure and velocity amplitudes in the calculations. The pressure derivative is linked to the velocity expression by the equations and :

u¯a=jρ¯gxωpax(1g0(s*))=1(ru+jω
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Analysis of axial energy flows