[hamid1]

Hy guys

what are the limitations for simulation through Polyflow?
i mainly willing to know if it is possible to simulate through polyflow in all ranges of Reynolds number? (or it is appropriate just for low reynolds number)

Many thank

[Amir]

Hi hamid,
As you know, it solves equations with finite element method and it seems that its worse than finite volume in high Re. No.

[hamid1]

Hi Amir

How come?, would u explain a bit more, and besides,roughly speaking is there any limitation for the reynolds number as role of thumb for simulating through polyflow?

[Amir]

Hey,
as you know, finite element method is recommended for problems that convection term is not dominated; although, there are new algorithm to improve that, but this method is usually used for solid medias. undoubtedly, the finite volume is more reliable for fluids especially in high Re No.
I don't have any rules of thumb for that; I faced such problems few months ago. I am using OpenFOAM in linux to get rid of them.

[hamid1]

Hi Amir

so as i understand anyway polyflow is good for very low reynolds number ,any simulation concerning a relatively higher reynolds number (which normally happens in fluids) is not feasible to be done through polyflow, by the way, openfoam is based on f.e or f.v ?

thank u
Hamid

[Amir]

Hi,
I guess that polyflow can also be helpful for moderate Re No.
OpenFOAM is based on finite volume but as it's an open source code, you can also implement some F.E. algorithms like DQ on that. it's so flexible!

regards,

Amir