CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM

How to Model Non Newtonian Laminar Flow?

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 3, 2023, 14:42
Default How to Model Non Newtonian Laminar Flow?
  #1
New Member
 
Prayan
Join Date: Jun 2023
Posts: 10
Rep Power: 3
pranay10 is on a distinguished road
Hello Experts,

I am studying the flow of Non-Newtonian Fluids in a Sinusoidal Channel as part of an ongoing research using OPENFOAM. I am new to this software.

Different models of viscosity like Hershey-Bulkey, Cross-Power Law, Power Law, etc needs to be examined.

The flow is supposed to be laminar. However, there are no solvers in openfoam that solves Non-Newtonian Laminar flows.

What solver can be used in this case?
pranay10 is offline   Reply With Quote

Old   July 4, 2023, 03:46
Default
  #2
Senior Member
 
Yann
Join Date: Apr 2012
Location: France
Posts: 1,111
Rep Power: 26
Yann will become famous soon enough
Hello,

For incompressible flows, you can choose between Newtonian and Non-Newtonian models in the transportProperties file (or physicalProperties, depending on the OpenFOAM version you are using)
And you can also switch between turbulent or laminar flow in pretty much any solver, so I guess any incompressible solver could work.

Do you need steady or transient simulation ?
What OpenFOAM version are you using ? (if not sure, try typing the foamVersion command)

Regards,
Yann
Yann is offline   Reply With Quote

Old   July 4, 2023, 07:12
Default
  #3
New Member
 
Prayan
Join Date: Jun 2023
Posts: 10
Rep Power: 3
pranay10 is on a distinguished road
I am using OF2212.
Also, I need steady state and not transient state.
pranay10 is offline   Reply With Quote

Old   July 4, 2023, 09:06
Default
  #4
Senior Member
 
Yann
Join Date: Apr 2012
Location: France
Posts: 1,111
Rep Power: 26
Yann will become famous soon enough
Then simpleFoam sounds good.

You can have a look to the TJunctionArrheniusBirdCarreauTransport tutorial to have an example of a setup using a non-Newtonian fluid. It's a pimpleFoam tutorial, so it's transient, but you should be able to use the same transporProperties file on a simpleFoam case.

Cheers,
Yann
Yann is offline   Reply With Quote

Old   July 5, 2023, 01:52
Default
  #5
New Member
 
Prayan
Join Date: Jun 2023
Posts: 10
Rep Power: 3
pranay10 is on a distinguished road
Thank You very much.
Also, may I know where can I find more such files for non-newtonian? Can you provide more if possible?
pranay10 is offline   Reply With Quote

Old   July 5, 2023, 03:35
Default
  #6
Senior Member
 
Yann
Join Date: Apr 2012
Location: France
Posts: 1,111
Rep Power: 26
Yann will become famous soon enough
Generally speaking, in such situation you can use the banana trick.
In the transportProperties file, define "banana" as transportModel and run the solver. It will throw you an error and give you a list of valid transport models.
You can then search for those transport models in the source code and/or the tutorials to see how to use it.

For instance, it should lead you there in the source code: https://develop.openfoam.com/Develop...iscosityModels

Cheers,
Yann
Yann is offline   Reply With Quote

Reply

Tags
fluid dynamics, non newtonian power law, research, viscosity, viscosity model

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
unable to run dynamic mesh(6dof) and wave UDF shedo Fluent UDF and Scheme Programming 0 July 1, 2022 17:22
laminar flow in one zone and kEpsilon model in the other zone. super1 OpenFOAM 3 January 15, 2017 10:44
Wrong flow in ratating domain problem Sanyo CFX 17 August 15, 2015 06:20
Convergence of laminar flow model for high Re Chander Main CFD Forum 0 December 16, 2010 05:10
Laminar flow in species transport model? Neha Rao FLUENT 7 February 25, 2006 02:23


All times are GMT -4. The time now is 11:19.