wallHeatFlux with constAnIso (anisotropic material)

hugo17 · April 1, 2015, 06:11

Hi,

I'm modelling solids with anisotropic heat conductivity using the chtMultiRegionSimpleFoam solver (OpenFOAM 2.3.1). I define e.g.
kappa (20 80 20);
in the thermophysicalProperties dict and the temperature field is calculated correctly. However, the wallHeatFlux utility gives wrong results because it seems to use the magnitude of kappa ((20^2+80^2+20^2)^0.5=84.9).

Does anybody have an idea what to change in wallHeatFlux in order to use the specific kappa value which is valid for each patch depending on its direction?

Best regards,
Hugo

marcoberna23 · July 5, 2019, 08:21

Hi Hugo,

OpenFOAM newbie here. I'm trying to do the same thing (using the same solver in a problem where a material has anisotropic thermal conductivity).

First of all, I hope you solved your problem!

How did you define the three values in the thermophysicalProperties dict?

Thank you,
Marco

April 1, 2015, 06:11	wallHeatFlux with constAnIso (anisotropic material)	#1
hugo17 New Member Join Date: Jul 2011 Posts: 18 Rep Power: 15	Hi, I'm modelling solids with anisotropic heat conductivity using the chtMultiRegionSimpleFoam solver (OpenFOAM 2.3.1). I define e.g. kappa (20 80 20); in the thermophysicalProperties dict and the temperature field is calculated correctly. However, the wallHeatFlux utility gives wrong results because it seems to use the magnitude of kappa ((20^2+80^2+20^2)^0.5=84.9). Does anybody have an idea what to change in wallHeatFlux in order to use the specific kappa value which is valid for each patch depending on its direction? Best regards, Hugo

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July 5, 2019, 08:21		#2
marcoberna23 New Member Marco Bernagozzi Join Date: Jul 2019 Location: Brighton, UK Posts: 3 Rep Power: 7	Hi Hugo, OpenFOAM newbie here. I'm trying to do the same thing (using the same solver in a problem where a material has anisotropic thermal conductivity). First of all, I hope you solved your problem! How did you define the three values in the thermophysicalProperties dict? Thank you, Marco