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Re: [Question #244604]: Turbulent flow by PFV method

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From: Bruno Chareyre <question244604@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 26 Feb 2014 11:41:28 -0000
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Question #244604 on Yade changed:
https://answers.launchpad.net/yade/+question/244604

    Status: Open => Answered

Bruno Chareyre proposed the following answer:
Nope.
The current formulation is rooted in Stokes assumption (viscous/laminar/creeping flow). Inertial effects are disregarded, hence no turbulence.
There may be ways to include some inertial terms (the dv/dt of Navier-Stokes). We did some preliminary work about this.
Yet, turbulence comes from the v.∇v, and for this one it is still an open question how it could be included in the PFV framework (if only it is possible, I doubt it).
It could be reflected somehow in a non linear form of the Poiseuille law. It would be similar to - speaking at the macro scale - replacing Darcy's law by Forchheimer's law, but I would not call this a simulation of turbulent flow in itself.

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