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How can I calculate gradT and Nusselt for this problem |
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October 30, 2014, 19:30 |
How can I calculate gradT and Nusselt for this problem
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#1 |
Member
sajad
Join Date: Apr 2014
Location: Iran
Posts: 46
Rep Power: 11 |
I changed the icoFoam to icoHeatFoam with add energy equation to it.also I change wallheatflux to wallHeatFluxLaminar.now I want to calculate gradT and Nusselt number around the block.how can I do this?
I cant download foamCalcEx because of Region denied. I attached the my case rtnx for any help |
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October 30, 2014, 20:36 |
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#2 |
Member
sajad
Join Date: Apr 2014
Location: Iran
Posts: 46
Rep Power: 11 |
I calculated magGradT and wallHeatFlux.now just I want to calculate Nusselt Number.I know:
Nuss=wallHeatFlux/magGradT but I dont know how I compute it in openFoam.I has both wallHeatFlux and magGradT.I just need to do a fraction.how can I do it? |
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November 9, 2014, 00:45 |
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#3 |
New Member
Raghav
Join Date: Oct 2014
Posts: 12
Rep Power: 11 |
Hi sajad6,
How did you calculate gradT? I'm also trying to calculate it on the wall. Thanks in advance! |
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November 9, 2014, 03:02 |
calculating gradT
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#4 |
Member
sajad
Join Date: Apr 2014
Location: Iran
Posts: 46
Rep Power: 11 |
Hi dear raghav
you can download foamCalcEx from below link and compile it: http://openfoamwiki.net/index.php/Contrib_foamCalcEx after you compile it you can calculate grad T after processing by type the code below: Code:
foamCalcEx grad T |
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November 9, 2014, 20:26 |
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#5 |
New Member
Raghav
Join Date: Oct 2014
Posts: 12
Rep Power: 11 |
Thank you very much sajad6
Do you know how I can get the magnitude of the gradient vector directly? I just want it on the walls |
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November 10, 2014, 12:50 |
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#6 |
Member
sajad
Join Date: Apr 2014
Location: Iran
Posts: 46
Rep Power: 11 |
Yes.
open your case in terminal and type: Code:
foamCalc magGrad T |
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