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Re: [Question #632800]: Viscosity of water in FlowEngine

 

Question #632800 on Yade changed:
https://answers.launchpad.net/yade/+question/632800

    Status: Open => Answered

Robert Caulk proposed the following answer:
Hello,

>Do you have the information about the solver used for Flowengine

 The solvers basically use different libraries/methods to solve the same
system of equations. The key to the numbers: 0=Gauss Seidel 1=Taucs
2=Pardiso 3=Eigen. The interfaces to these libraries are coded in [1] if
you are interested in diving into the rabbit hole. My recommendation is
to stick with 3, it is quite robust in my experience (not to mention it
is free, while pardiso requires a license if I am not mistaken).

>Q4:

Hmm, basically you want half of your cube to not participate in fluid
flow? You still want the top and bottom halves to interact mechanically,
correct?

You might want to try experimenting with blocking cells [2]. For
example, you'd set up the entire cube with flow, and then sweep through
the bottom half of the cells with blockCell. I've never used it though,
so I am unsure how that will work out. Good luck.

Cheers,

Robert

[1]https://github.com/yade/trunk/blob/master/lib/triangulation/FlowBoundingSphereLinSolv.ipp
[2]https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.FlowEngine.blockCell

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