Cavity flow (PBiCCCG solver)

OpenFOAM 4.x

Case directory

$FOAM_TUTORIALS/incompressible/pisoFoam/ras/cavityCoupledU

Summary

We calculate the flow of a system where the upper wall "movingWall" is moving in parallel at 1 m/s and the other walls "fixedWalls" are stationary from 0 sec to 10 sec. There is no inflow or outflow of fluid, and the calculation is performed as a two-dimensional problem with a single mesh in the Z-direction.

Model geometry Model geometry

The standard k-ε model is used for the turbulence model.

For the flow velocity (U) solver, we will use the conjugate type solver PBiCCCG. This setting is specified in the file system/fvSolution as follows.

U
{
    type            coupled;
    solver          PBiCCCG;
    preconditioner  DILU;
    tolerance       (1e-05 1e-05 1e-05);
    relTol          (0 0 0);
}

The meshes are as follows.

Mesh Meshes

The calculation result is as follows.

Flow velocity (U)
Flow velocity at final time (U) Flow velocity at final time (U)
Pressure at final time (p) Pressure at final time (p)

We can see that a vortex is being generated.

Commands

cp -r $FOAM_TUTORIALS/incompressible/pisoFoam/ras/cavityCoupledU cavityCoupledU
cd cavityCoupledU

blockMesh
pisoFoam

paraFoam

Calculation time

6.05 seconds *Single, Inter(R) Core(TM) i7-2600 CPU @ 3.40GHz 3.40GHz