I, beginner to COMSOL, am using poroelastic model in COMSOL fully saturated porous medium, all the pores are filled with fluid. Hence porosity is equal to the ratio of volume of the fluid to the total volume. The solid deformation will affect porosity an permeability.
When the volumetric strain changes occur in the model, the porosity must change accordingly. But in COMSOL poroelastic model, the variable porosity seems to be constant through out analysis.
Porosity seems appear only in storage coefficient but not inside any differential term.
How could i input this into model ?? Would anyone has any idea ?? I am sure this is already implemented in Abaqus, but i am wondering how to do it in COMSOL ?
I desperately need to model porosity as vol. strain dependent as permeability in soft tissue is porosity/strain dependent.
Thank you in advance !
When the volumetric strain changes occur in the model, the porosity must change accordingly. But in COMSOL poroelastic model, the variable porosity seems to be constant through out analysis.
Porosity seems appear only in storage coefficient but not inside any differential term.
How could i input this into model ?? Would anyone has any idea ?? I am sure this is already implemented in Abaqus, but i am wondering how to do it in COMSOL ?
I desperately need to model porosity as vol. strain dependent as permeability in soft tissue is porosity/strain dependent.
Thank you in advance !
