Question #269831 on Yade changed: https://answers.launchpad.net/yade/+question/269831
Status: Open => Answered Raphaël Maurin proposed the following answer: Hi, 1. When I am talking about fluid mesh, it is a regular wall-normal fluid mesh defined by the number of cell nCell, and the width of the cell deltaZ. A typical definition of HydroForceEngine to apply only buoyancy would be : HydroForceEngine(densFluid = 1000,viscoDyn = 1e-3,zRef = 0.0,deltaZ = 0.1,nCell = 10,vxFluid=numpy.zeros(nCell),phiPart = numpy.zeros(nCell),vFluctX = np.zeros(len(O.bodies)),vFluctZ = np.zeros(len(O.bodies)),ids = idApplyForce ) This will apply buoyancy to the particles contained in the idApplyForce list, and of z component between zRef= 0. and nCell*deltaZ = 1 m. I entered the density and viscosity of water, but it can be modified obviously (viscosity will not influence the buoyancy, it is defined for drag) 2. Yes 3. Ok, I agree with you, and then it is maybe better (faster) to create an engine applying the buoyancy only directly, or to make the drag application optional. 4. No Raphaël -- You received this question notification because you are a member of yade-users, which is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp