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Laplacian Solver. Assigning different transport properties |
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November 23, 2009, 05:59 |
Laplacian Solver. Assigning different transport properties
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#1 |
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Join Date: Nov 2009
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Hello,
i'm trying to solve the following problem using LaplacianFoam: Temperature distribution in a solid consisting of two regions which have different heat transfer coefficients. How can one assign the transport properties (Heat coefficient in LaplacianFoam) to different regions? The reason is to estimate the distribution of temperature through insulation containing several layers. Any ideas how do solve it? Maybe another solver? Last edited by mks; November 23, 2009 at 09:45. Reason: Adding information |
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November 24, 2009, 09:53 |
Problem seems to be solved.
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#2 |
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I think i could solve the problem. For those who is interested in solution: I modified the standard solver LaplacianFoam. In the createFields.H I have changed the way, DT is read in just like the Temperature Field:
Info<< "Reading diffusivity D\n" << endl; volScalarField DT ( IOobject ( "DT", runTime.timeName(), mesh, IOobject::MUST_READ, IOobject::AUTO_WRITE ), mesh ); Now in temestep 0/ folder create the file DT by copying+modifying the T file. I used the SetFieldsDict in system folder for assigning the DT values to the cell volumes: defaultFieldValues ( volScalarFieldValue DT 4e-04 ); regions ( boxToCell { box ( 0 0 0 ) ( 1.5 3 0.1 ); fieldValues ( volScalarFieldValue DT 1e-04 ); } ); After compiling the new solver and running it i got a temperature distribution that seems to be right. |
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April 7, 2015, 21:20 |
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#3 |
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can you share your case here?
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April 8, 2015, 02:59 |
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#4 |
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Hi Arslan,
yes I could share it, but it is not possible to attach here files larger than 97KB... Give me you email, so I can sent it to you. |
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April 8, 2015, 17:33 |
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#5 |
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April 20, 2015, 11:04 |
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#6 |
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February 16, 2017, 03:36 |
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#7 |
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Alejandro
Join Date: Jan 2014
Location: Argentina
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February 16, 2017, 05:57 |
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#8 |
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Hi Alejandro,
just sent an email to you! |
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June 19, 2017, 09:18 |
Req
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#9 |
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karthik
Join Date: Jun 2016
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Hi,
I've been trying to do this for a while now.. Can any of you please mail me the modified solver files? ID: ktk04spiker@gmail.com |
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November 20, 2017, 05:27 |
Req
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#10 |
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bobby
Join Date: Jul 2017
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November 20, 2017, 06:00 |
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#11 |
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Hi rahul62,
sorry, I don't have this anymore. Please ask someone to whom I did send it previously, e.g. ktk04spiker@gmail.com, ancolli@gmail.com, arslan.arshad786@yahoo.com etc. |
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November 20, 2017, 09:39 |
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#12 |
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Alejandro
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here it is...
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November 20, 2017, 11:04 |
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#13 |
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bobby
Join Date: Jul 2017
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How to define different value of DT for different region. The above case doesn't contain 0 folder.
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November 20, 2017, 11:16 |
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#14 |
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Alejandro
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April 2, 2018, 08:27 |
Add heat source
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#15 |
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Shailesh BG
Join Date: Aug 2017
Location: Bangalore
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Hi Mks,
That is a wonderful way of assigning transport properties to different regions without having to go through toposet and splitMeshRegions process. But I want to know if it is possible to add heat sources to the different regions created by this way. In fvOptions the possible selection modes are: all, cellSet, cellZone, points,, Could you please shed some light on this.
__________________
Regards, Shailesh |
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April 3, 2018, 09:11 |
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#16 | |
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Alejandro
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Quote:
Regards |
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September 20, 2018, 04:41 |
How to give Heat transfer coefficient BCs and variable heat flu Laplacian OpenFoam5
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#17 |
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anand
Join Date: Sep 2018
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i'm trying to solve 3D conduction problem using LaplacianFoam OF5: Temperature distribution in a solid surrounded by of two regions which have different heat transfer coefficients and ambient Temperatures.And also how to give variable heat flux boundary condition.
I tried groovyBC, but it is not working, any other method please. I have only one region. |
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September 20, 2018, 08:26 |
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#18 |
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Alejandro
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You need to use the multiRegion approach. GroovyBC is not working in that case. See tutorials >> heatTransfer >> chtMultiregionFoam and chtMultiregionSimpleFoam
here u have a detailed example for heat transfer https://www.slideshare.net/ARPITSING...regiontutorial or a simplified solver witth modified BC for an electrochemical problem https://www.sciencedirect.com/scienc...170?via%3Dihub under the multi-region approach Regards |
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Tags |
heat transfer, laplacianfoam, laplacianschemes, multiregion, temperature |
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