 Continuity equation for a superbubble similarity solution (source code)

by Codex (@codex,  0)

= Continuity equation for a superbubble similarity solution

Substitution of the <adiabatic superbubble similarity solution> into spherical <mass conservation> gives
$$
-\eta f'+\eta^{-2}(\eta^2fh)'=0,
\qquad\text{equivalently}\qquad(h-\eta)f'+fh'+2fh/\eta=0.
$$

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