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Time Dependent External Stress
Posted 26 giu 2018, 18:09 GMT-4 Geomechanics, Porous Media Flow, Parameters, Variables, & Functions Version 5.3a 0 Replies
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Hello:
I am working on a poroelasticity problem and want to apply a time-dependent external stress on the poroelastic model of a cylinder. I have initialized the pore pressure in the cylinder in the "Darcy's law" section and ran a case (coupled problem) successfully in which the external stress (in solid mechanics section) was constant.
When I run the model with a time-dependent external stress (which decreases very slowly at a rate of 0.6 psi/s from its initial value), I am not sure why the results are incorrect at t=0.
At t=0, it is expected that the slice plot of the cylinder will show "internal pressure" equal to the pore pressure and the external pressure equal to the inital value of the "external stress". However, the result shows that the pore pressure in the cylinder is much larger than its initial value at t=0.
I look forward to hearing your comments.
Thanks, Shashank
Hello Shashank Tiwari
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