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

Radiative solar heating of surfaces with buoyantSimpleFoam

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 14, 2024, 06:21
Default Radiative solar heating of surfaces with buoyantSimpleFoam
  #1
KTG
Senior Member
 
Abe
Join Date: May 2016
Posts: 119
Rep Power: 10
KTG is on a distinguished road
Dear Faomers,


I am trying to simulate solar heating and the resulting convection. I would like to treat the heated solid boundaries as 1D rather than modeling the internal temperature profiles with multi region. I belive this is possible in theory, but I can't seem to find an example of an openFoam casefile that does this.



From my interenet searches, it seems that this boundary condition might be the right one for what I described above:


Code:
    {
        type            externalWallHeatFluxTemperature;

        mode            coefficient;

        Ta              constant 300.0;
        h               constant 10.0;
        thicknessLayers (0.1 0.2 0.3 0.4);
        kappaLayers     (1 2 3 4);
        
        kappaMethod     fluidThermo;
        
        qr                qr;        

        value           $internalField;
    }

But it crashes after the temperature goes below absolute zero. Can anyone point me in the right direction?


Thanks
KTG is offline   Reply With Quote

Old   March 2, 2024, 15:12
Default
  #2
KTG
Senior Member
 
Abe
Join Date: May 2016
Posts: 119
Rep Power: 10
KTG is on a distinguished road
I am really struggling with this and am very surprised I can't find an example casefile where there is solar radiation, and a surface actually changes temperature without using a chtMulitRegion solver. For example, if I wanted to make the surface temperature change in the simpleCarSolarPanel tutorial, can anyone tell me what boundary condition to use? Or alternatively, does anyone know of a textbook or journal papers that give a good introduction to this type of modeling in openFoam?
KTG is offline   Reply With Quote

Reply

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
Odd results with solar load me3840 OpenFOAM Running, Solving & CFD 2 January 11, 2022 05:07
buoyantSimpleFoam for Solar Chimney - Max number iteration exceeded. olivierdambron OpenFOAM Running, Solving & CFD 19 January 29, 2018 17:37
Help on Solar heating on roof tkc01 Autodesk Simulation CFD 0 August 23, 2013 08:49
unphysical behaviour in buoyantSimpleFoam at inclined surfaces hanness OpenFOAM Running, Solving & CFD 4 April 2, 2013 06:11
Solar Panel Water heating using solidwork Flow Simulation axtray FloEFD, FloWorks & FloTHERM 2 September 21, 2011 15:47


All times are GMT -4. The time now is 09:58.