|April 7, 2006, 22:27||
Pressure de-coupling with fractional step
Hi, this is a fairly specific question so, sorry...
I have been writing an incompressibile 2D unstructured, unsteady NS solver using a fractional step approach. It uses non-staggered 2nd order upwind FV's on the median dual mesh (vertex centred).
1st order pressure projections, (like Chorin) work fine, but 2nd order projections (pressure corrections) lead to a grid scale pressure de-coupling.
Some people claim to be able to use the 2nd order projection without de-coupling on collocated structured grids.
Does it seem reasonable to be getting pressure de-coupling?? Can anyone suggest a fix??
|Thread||Thread Starter||Forum||Replies||Last Post|
|Pulsatile pressure inlet with pressure outlet||a.lynchy||FLUENT||3||March 23, 2012 14:45|
|Time accuracy of NITA - FRACTIONAL STEP in Fluent||Paolo Lampitella||Main CFD Forum||0||March 19, 2008 08:20|
|Neumann pressure BC and velocity field||Antech||Main CFD Forum||0||April 25, 2006 02:15|
|pressure gradient term in low speed flow||Atit Koonsrisuk||Main CFD Forum||2||January 10, 2002 11:52|
|pressure Poisson equation in fractinoal step metho||Rui||Main CFD Forum||6||October 15, 2000 04:57|