Question #688685 on Yade changed: https://answers.launchpad.net/yade/+question/688685
Status: Answered => Open Othman Sh is still having a problem: That make sense to me. Yet when I added back the mechanical engine and after that I had O.run() then the flow engine, I still get this: (Triangulation does not exist. Sorry.) negative volume for an ordinary pore (temp warning, should still be safe) *** stack smashing detected ***: <unknown> terminated Aborted (core dumped) I don't know what is missing in this code to get it run. ------------------------------------------ # -*- 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' ########################## Engines ############################# O.engines=[ ForceResetter(), InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Box_Aabb()]), InteractionLoop( [Ig2_Sphere_Sphere_ScGeom(),Ig2_Box_Sphere_ScGeom()], [Ip2_FrictMat_FrictMat_FrictPhys()], [Law2_ScGeom_FrictPhys_CundallStrack()],label="iloop" ), FlowEngine(dead=1,label="flow"),#introduced as a dead engine for the moment, see 2nd section GlobalStiffnessTimeStepper(active=1,timeStepUpdateInterval=100,timestepSafetyCoefficient=0.8), NewtonIntegrator(damping=0.2) ] O.dt=1e-5 O.run() #B. Activate flow engine and set boundary conditions in order to get permeability flow.dead=0 flow.useSolver=3 flow.viscosity=visc flow.boundaryUseMaxMin=[1,1,1,1,1,1] flow.bndCondIsPressure=[0,0,0,0,1,1] #[xmin,xmax,ymin,ymax,zmin,zmax] flow.bndCondValue=[0,0,0,0,0,dP] flow.saveVtk() #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 : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp