Question #703284 on Yade changed:
https://answers.launchpad.net/yade/+question/703284
Status: Open => Answered
Bruno Chareyre proposed the following answer:
Hi,
Q1." flow.gradP？or flow.imposePressure() ?" both work and they are
compatible with each other. Typically, you can assign P somewhere and
its derivative at the macroscale (the gradient).
Q2. "flow.averageVelocity() achieve it or not.". Yes. The average
velocity is the output if you assign gradP as input.
Q3. "if the PeriTriaxController and PeriodicFlowEngine can reproduce the
oedometer test"
Easy answer: "no". The oedometer is a diffusion problem and a diffusion problem
is not periodic in general.
Tedious answer: in fact you could impose fluid pressure along a plane cutting
through the period, and impose the average effective stress with PeriTriax (how
exactly, I'm not sure). That would somehow approach an oedometer situation, and
it would be consistent with the general theory of consolidation. But in fact it
would only make things more complex, and in the end you would just simulate the
periodic superposition of independent consolidating layers. I don't see a clear
progress.
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