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The role of porosity in poroelastic model
Posted 24 giu 2015, 11:10 GMT-4 0 Replies
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I modeled a biphasic soft tissue using poroelastic model in COMSOL as fully saturated porous medium is, mathematically, identical to biphasic medium, i.e., all the pores are filled with fluid. Hence porosity is equal to the ratio of volume of the fluid to the total volume.
When the volumetric 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. Porosity in current configuration should be equal to volume of fluid in current configuration to total volume in reference configuration.
How could i input this into model ?? Would anyone has any idea ??
Thank you in advance !
Hello Stefano Meo
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