gravity term of fluid in the default 'cfdemSolverPiso'...

Submitted by bhwang on Tue, 03/21/2017 - 02:44

Is there a 'gravity term' in the default 'cfdemSolverPiso'?
Although there is a 'g' file in the ..../CFD/constant/, but it actually not used in the 'cfdemSolverPiso' algorithm
(I found the command of header file (#include readGravitationalAcceralation.H), but the term 'g' is not actually used.)

Thanks for reading my question : )


Leopold Sun | Thu, 12/12/2019 - 02:52

Sorry to answer such an old question, but i'm facing the same question.
It's likely that gravity is not used in this solver (or just used somewhere i didn't find).
You may do this to checkout: put just one particle with zero velocity in the liquid and the density of both is equal, add drag force & gradP & viscForce, modelType is choosed to be A. Then let the particle to settle, you may find that the particle will drop down which isn't right since the buoyant force should have banlanced the gravity and no additional force is applied