Why is a liquid incompressible?

Within a reasonable temperature window of 0 K to about 5000 K , matter is made up of atoms or molecules. ... Gases are far more compressible than liquids and solids because the inter-molecular distances are far greater than in liquids and solids (hence also the lower densities of gases).Oct 20, 2015 read more

Incompressible flow occurs when there is negligible density variation in the fluid across the domain being considered and is the description of a particular regime. Incompressible fluid is an instrinsic property of the material under consideration. read more

In fact, it is a matter of ratio of density change to mean density - or more precise: convective velocity to speed of sound (which is the Mach number) to distinguish between compressible, slightly compressible and incompressible. The terminus incompressible is not a physical state. read more

Incompressible flow does not imply that the fluid itself is incompressible. It is shown in the derivation below that (under the right conditions) even compressible fluids can – to a good approximation – be modelled as an incompressible flow. read more