Defining mesh motion diffusivity from file

cuba · July 9, 2013, 04:07

Hi Everyone,

I am looking for a sample case where the mesh motion diffusivity (using laplaceFaceDecomposition) is defined from file for each point in the mesh?

You may think my case as a shoebox where the top stands still and bottom moves. My mesh is finer at the bottom.
Short side walls of this box are my inlet and outlet boundaries and the long side walls are the slip boundaries.

Thanks for the replies
Best

akidess · July 9, 2013, 05:14

I don't know a tutorial case, but from what I can tell (looking at the code in 1.6-ext) the diffusivity is defined as a surfaceScalarField, i.e. per face. I'm not sure if there is a tool to set values on a surfaceScalarField (such as setFields for vol*Fields), but if there isn't it wouldn't be too hard to write a small tool specifically for your case.

ChristophGradl · February 12, 2015, 06:00

Hello,
I am also looking for a sample case - did you found one?
Do you have another solution or workaround?

Thank you,
Chrisotph

be_inspired · October 24, 2023, 09:09

Hi. I hope someone could update this topic. How generate that file?

July 9, 2013, 04:07	Defining mesh motion diffusivity from file	#1
cuba New Member Join Date: Oct 2012 Posts: 17 Rep Power: 14	Hi Everyone, I am looking for a sample case where the mesh motion diffusivity (using laplaceFaceDecomposition) is defined from file for each point in the mesh? You may think my case as a shoebox where the top stands still and bottom moves. My mesh is finer at the bottom. Short side walls of this box are my inlet and outlet boundaries and the long side walls are the slip boundaries. Thanks for the replies Best

July 9, 2013, 05:14		#2
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 30	I don't know a tutorial case, but from what I can tell (looking at the code in 1.6-ext) the diffusivity is defined as a surfaceScalarField, i.e. per face. I'm not sure if there is a tool to set values on a surfaceScalarField (such as setFields for volFields), but if there isn't it wouldn't be too hard to write a small tool specifically for your case. __________________ On twitter @akidTwit *Spend as much time formulating your questions as you expect people to spend on their answer.

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February 12, 2015, 06:00		#3
ChristophGradl New Member Christoph Gradl Join Date: Feb 2014 Posts: 18 Rep Power: 12	Hello, I am also looking for a sample case - did you found one? Do you have another solution or workaround? Thank you, Chrisotph

October 24, 2023, 09:09		#4
be_inspired Senior Member M. Montero Join Date: Mar 2009 Location: Madrid Posts: 155 Rep Power: 17	Hi. I hope someone could update this topic. How generate that file?