The fluid which which density is dependent on pressure
p:
(1) | \rho = \rho(T, p) |
which is equivalent to non-zero compressibility:
(2) | c(T, p) = \frac{1}{\rho} \frac{d \rho}{ dp} \neq 0 |
where
It is opposite to Incompressible fluid.
See also
Physics / Mechanics / Continuum mechanics / Fluid Mechanics / Fluid Dynamics
[ Compressibility ] [ Incompressible matter ] [ Incompressible fluid ]