Question #165417 on Yade changed: https://answers.launchpad.net/yade/+question/165417
Feng Chen proposed the following answer: Hi, Bruno: That reference is from PFC2D's (v3.1) manual "Fixed coarse-grid fluid scheme in PFC2D", I remember it is in the second example of fluidized bed. I have not done in-depth research about this, but my experience is your dn/dt and d(rho*n)/dt (n is the porosity, rho is fluid density) must be small (but don't know how small it should be) compared to other terms, or your solution for N-S equation will soon fail, if omit your porosity derivative in your N-S equation, everything will be happy... feng -- 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