[soletto]

Hallo guys,

we do use AVL Fire M in our company and i want to use CFD Software to make simulations from our products (mostly valves and pipes for LDPE industry).

Now we do have the Polymerisation process of Ethylene to Polyethylene.

If i consider a conversation rate of 30 % Polyethylene and 70 % Ethylene i do ask myself how i should define the medium.

I do think this plastic is like honey very viscous and it is a non newtonian fluid.

I think i need to simulate this medium as a 2 Phase fluid.

Does anyone can give some input or links where i can find some help?

I do know the simulation preprocessing steps but i have completly no idea how to define this medium.

Thank you, best Regards Stefan

[arjun]

We do have this model implemented in Wildkatze software


https://www.sciencedirect.com/scienc...27775707003044




The most difficult thing we found is the determination of model parameters. If you do not want to write than you can just use Wildkatze for it.



PS: I hope I am not mistaken but from your post i understood this is what you wanted.

[soletto]

thank you for the link.


But im searching for a cfd material model for LDPE


this means the polymerisation process of ethylene into polyethylene.


so for a composition for example of 30 % polyethylene and70 % ethylene.



This paper deals with polyurethan.



And how to simulate the viscoelastic materialproeprties

[soletto]

what is wildkatze software


is it able to simulate that polymerisation process and the viscoelastic material behaviour?

[soletto]

seems to be that wildkatze only runs on linux.


i cant find any materialfile for avl fire m.


The question for me is what i need to simulate a structural viscous material


with a shear velocity depending viscousity

[arjun]

Originally Posted by soletto

seems to be that wildkatze only runs on linux.


i cant find any materialfile for avl fire m.


The question for me is what i need to simulate a structural viscous material


with a shear velocity depending viscousity

"this means the polymerisation process of ethylene into polyethylene."

I am sorry my mistake, I did not carefully read.

Theoritically you can simulate with Wildkatze if you know the reactions. Even the poly-Eurathane is reactive flow.

Yes Wildkatze is only for linux, there used to be a windows version but now not maintained.