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3 questions with no upvoted or accepted answers
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Speed of sound in thermodynamically unstable phases
The general thermodynamic definition for the speed of sound is
$$c_S=\sqrt{\left(\frac{\partial P}{\partial \rho}\right)_{S}}$$
But what if the material is in a non-stable state, e.g. during tension ...
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How can I theoretically determine the effect of acoustic perturbations on laminar-turbulent transition in a heat plume (i.e. rising smoke)?
I've done some preliminary reading on how Tollmien-Schlichting waves play a part in these perturbations, but is there a formula that connects sound frequency with the transition stage?
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If I accelerate a mass quickly enough through a short distance (i.e. unit step function), would I create wind, sound, and heat?
As far as I know, the movement of air molecules can result in what we call wind, sound, or heat (and maybe some other things I'm not thinking of), depending on the assumptions about its motion. Wind ...
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