Yade

Non-Newtonian fluids in PFV model

Asked by Soheil Safari

Hello everyone;

Hope you are doing well.

I am using the PFV model for obtaining the permeability of saturated porous media with water which use Stokes equation.

Now I want to obtain the permeability of saturated porous media with non-Newtonian fluids (shear thinning- xanthan gum solutions).

Would you please let me know whether it is possible to use the PFV model for non-Newtonian fluids or not?

I am grateful for any hints or insights into this issue.

Many thanks in advance.

Best regards,
Soheil

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Robert Caulk
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Robert Caulk (rcaulk) said : 		#1

Hello,

This is not a feature that currently exists in FlowEngine. You would need to make source code modifications if you would like to add it.

Cheers,

Robert

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Soheil Safari (soheilsafari) said : 		#2

Dear Robert;

Thank you very much for your kind reply.

Is it the source code link? Is it just in C++?

https://gitlab.com/yade-dev/trunk/-/tree/master/pkg/pfv

For changing the fluid properties, which one should I select?

Would you please let me know how I can do the modification?

And after the modification, how can I use this in my model?

Is there any tutorial for this?

Many thanks in advance.

Cheers,
Soheil

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Best Robert Caulk (rcaulk) said : 		#3

Hello,

Yes, that is the folder containing the FlowEngine source code.

>>For changing the fluid properties, which one should I select?
>>Would you please let me know how I can do the modification?
>>And after the modification, how can I use this in my model?

Honestly, there is no simple answer to any of these questions without knowing ALOT more about your project. But for me, that starts to become consulting work. If you really need a one on one lesson for how FlowEngine files are connecting and what kind of modifications you need to make - you can go to discord to open a line of communication with me:

https://discord.gg/rku35YXZJd

Cheers,

Robert

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Soheil Safari (soheilsafari) said : 		#4

Dear Robert;

Many thanks for your valuable time and kind consideration.

That is great. Thank you very much for sending me the link.

I will do it as soon as possible.

Best regards,
Soheil

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Soheil Safari (soheilsafari) said : 		#5

Thanks Robert Caulk, that solved my question.

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Bruno Chareyre (bruno-chareyre) said : 		#6

Hi there,
Just a quick comment: non-newtonian fluid flow at the pore scale sounds very interesting but right now I have no idea how to achieve that. It would need, I presume, to solve a non-linear system of equations, which will be very different.
There is nowhere a single line of code that you could tweek to turn the fluid non-newtonian.
Bruno

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Soheil Safari (soheilsafari) said : 		#7

Dear Bruno,

Thank you very much for your kind comment.

Robert told me that it needs much more time. Due to my short time period before the conferences, I have to postpone it. I will try to make some modifications after that.

Cheers,
Soheil