Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Dependent variables in Biot Poroelasticity or boundary conditions

Please login with a confirmed email address before reporting spam

Hi,

There are four variables when I choose Earth Science Module -> Poroelasticity -> Plane Strain, Pressure: p u2 v2 p2
Pressure in the solid frame, Vx and Vy velocities and fluid pressure (in 2D case). But I want to neglect body forces in my model.

My model is a solid cube of porous rock filled with water in the centered sphere, all the other surrounding pores are filled with air. I press it uniformly on every external boundary. But finally I get something, that it is not uniformly deformed: I've got indefinable cracks in y-direction.

I assume that the problem is with boundary conditions or it also can be some forces that act somewhere (body forces) that I didn't neglect. I've tried to check every setting carefully, but didn't find my mistake. Can anyone help me to define whether my problem is in forces or in boundary conditions?

Thanks!


0 Replies Last Post 16 ago 2010, 04:57 GMT-4
COMSOL Moderator

Hello Maria Kuteynikova

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.