Incompressible flow

The major difference between compressible and imcompressible flow is that the conservation of mass equation reduces to $ \nabla \cdot \boldsymbol{v}= 0$. The consequence of this is that the transient and convective term disappear from the pressure equation, i.e. the equation becomes purely diffusive (elliptical instead of hyperbolic). The differences are summarized in the next sections.



Subsections