Question #688685 on Yade changed: https://answers.launchpad.net/yade/+question/688685
Othman Sh gave more information on the question: I have some updates. I realized that since I'm fixing the spheres in their position and I don't want any deformation in the packing, I don't need the mechanical engine so I removed it (This was based on answer #7 in [1]). The errors are now fixed but I don't get any results. For instance, flow.averageVelocity() is nan. Would you please help? Thanks, Othman [1] https://answers.launchpad.net/yade/+question/685707 ----------------------------------------------- # -*- coding: utf-8 -*- import numpy as np from yade import pack, ymport, plot radiuscyl=.08 heightcyl=.25 dP=4e3 #Pa visc=1e-3 #Pa.sec density=1000 #kg/m3 g=9.81 #m/s2 O.materials.append(FrictMat(young = 5e10, poisson = 0.15,frictionAngle = atan(.2), density=1920)) ############################ spheres ############################# sp=pack.SpherePack() sp.makeCloud((0,0,0),(.4,.4,2),rMean=0.0083,rRelFuzz=0.1) #### cylinder extraction pred=pack.inCylinder((.3,.3,0),(.3,.3,heightcyl),radiuscyl) spFilter=filterSpherePack(pred,sp,Material=Material, returnSpherePack=True) spFilter.toSimulation() yade.qt.View() Height=max(utils.aabbDim()) #Fix all particles in their positions. No deformation for i in O.bodies: i.state.blockedDOFs='xyzXYZ' #B. Activate flow engine and set boundary conditions in order to get permeability flow=FlowEngine() flow.useSolver=3 flow.viscosity=visc flow.boundaryUseMaxMin=[1,1,1,1,1,1] #if you want wall to be boundary, set this 0. If you don't have a wall, make it 1 so that spheres will be boundary flow.bndCondIsPressure=[0,0,0,0,1,1] #[xmin,xmax,ymin,ymax,zmin,zmax] flow.bndCondValue=[0,0,0,0,0,dP] #Permeability calculations Q=max(flow.averageVelocity()) Permeability=abs((density*g*Q*Height)/dP) print ("average velocity: ",Q, "Permeability: ",Permeability) -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
