[swartzism]

Hi all,

I'm new to open foam and CFD in general and am trying to start very basic in terms of OpenFoam simulation. My first project is to start with an empty block of air (no geometry) with no flow.

My (probably misguided) way of doing this was to copy the initial cavity tutorial and modify it to have no flow by only using fixed walls (i.e. removing fixedWalls and frontAndBack in all boundaryField sections in the 0/ folder, as well as in the boundary section in blockMeshDict (I moved all the faces to fixedWalls). I made the velocity in transportProperties 0.0 for no flow. I tried to run with icoFoam, but just got this spit out over and over:

...

Time = 0.495

Courant Number mean: 0 max: 0
DILUPBiCG:  Solving for Ux, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG:  Solving for Uy, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG:  Solving for Uz, Initial residual = 0, Final residual = 0, No Iterations 0
DICPCG:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 0, global = 0, cumulative = 0
DICPCG:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 0, global = 0, cumulative = 0
ExecutionTime = 0.14 s  ClockTime = 0 s

Time = 0.5

Courant Number mean: 0 max: 0
DILUPBiCG:  Solving for Ux, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG:  Solving for Uy, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG:  Solving for Uz, Initial residual = 0, Final residual = 0, No Iterations 0
DICPCG:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 0, global = 0, cumulative = 0
DICPCG:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 0, global = 0, cumulative = 0
ExecutionTime = 0.15 s  ClockTime = 0 s

End

Is this my expected outcome? I would imagine that I would get some increase in No Iterations, but the rest stay 0.

Any help is much appreciated!