[tellico]

I'm trying to use simpleFoam to model a basic wind pressure application.

I have wind pressure of 42m2/s2 coming from the south in my BC and all other BCs are zeroGradient (including the ground and the "building" cut out in the middle of the mesh.

I've left the inlet velocity as zeroGradient, along with all the outlet velocities.

I've tried a few different tricks with the BCs but no matter what I do, the first few timesteps have the pressure jumping up to crazy high unbelievable numbers which makes me think that I'm doing something fundamentally wrong here.

[tellico]

in case anyone is curious to know how I got this to work here is what I did:

-rather than specify inlet pressure I specified inlet velocity (ie. windspeed) and left the inlet pressure as "zeroGradient"

-changed kinematic viscosity in the 'transport properties' file to reflect air rather than the default (water)

-set my outlet pressures BCs to fixedValue, uniform 0

the purpose of this exercise was to test out how OpenFoam compares to the new Robot CFD simulator in Autodesk and the results were comparable