CAPE Forum

Ansys => Fluent => Topic started by: william on February 04, 2012, 07:11:45 PM

Title: Pressure-based solver vs. Density-based solver
Post by: william on February 04, 2012, 07:11:45 PM

Hi,

I just wanted to share the difference between the pressure based solver and density based solver. And which solver is suitable for any application.

Pressure-based algorithm solves the pressure equation to conserve mass and can be used in any flow simulation except with the following features: real gas models, non-reflecting boundary conditions, and wet steam multiphase model.

Density-based algorithm solves the original continuity equation along with momentum, energy and species transport as a coupled set of equations. This solver is not available for cavitation model, VOF model, multiphase mixture model, Eulerian multiphase model, non-premixed combustion model, premixed combustion model, partially premixed combustion model, composition PDF transport model, Soot model, Rosseland radiation model, melting/solidification model, shell conduction model, floating operating pressure, fixed variable option, physical velocity formulation for porous media, relative velocity formulation, and specified mass flow rate for streamwise periodic flow.