1. Positioning the problem
A table listing the notations and symbols used can be consulted at the end of the article.
An analysis of the specialized literature on thermoacoustic systems (motors or receivers) already provides some essential sizing rules on a case-by-case basis:
dimensional constraints on stack or regenerator hydraulic radius, length, etc. ;
the position of the porous medium in the waveguide (for example, a regenerator is generally positioned near a velocity node to limit viscous dissipation);
the values of the aeraulic impedances (ratio of the pressure amplitude to that of the acoustic velocity of the fluid) of the acoustic circuit to be respected for a correct adjustment of the phases between pressure and gas flow;...
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Positioning the problem
Similarity of thermoacoustic machines
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