Editing Incompressible flow (section)

{{short description|Fluid flow in which density remains constant}}
{{Use Canadian English|date = March 2019}}
{{More citations needed|date=December 2019}}

In [[fluid mechanics]], or more generally [[continuum mechanics]], '''incompressible flow''' is a [[fluid flow|flow]] in which the material [[density]] does not vary over time. Equivalently, the [[divergence]] of an incompressible flow velocity is zero. Under certain conditions, the flow of [[compressible fluid]]s can be modelled as incompressible flow to a good approximation.