Uds_flux

IndrajitW · December 13, 2012, 02:37

Hi all,
I am using a UDS transport equation but instead of the conventional mass flow rate flux term (rho*Phi*U) I need a phi*U term. For that I tried to define the flux term by UDS_FLUX macro, but I suspect perhaps it takes the flux normal to the boundary (wall for example). I need the flux in u direction which is parallel to the wall.
Please help.
Indrajit

legendyxg · December 13, 2012, 03:26

Hi Indra,

Maybe you can first get the facet area vector A via F_AREA(A,f,t), and then multiply the component of A normal to the u direction, i.e. A[1] if u direction is the x direction, by U.

IndrajitW · December 14, 2012, 02:51

Thanks a lot Yang!! I will see if that helps

December 13, 2012, 02:37	Uds_flux	#1
IndrajitW Member Indrajit Join Date: Nov 2012 Posts: 33 Rep Power: 15	Hi all, I am using a UDS transport equation but instead of the conventional mass flow rate flux term (rhoPhiU) I need a phi*U term. For that I tried to define the flux term by UDS_FLUX macro, but I suspect perhaps it takes the flux normal to the boundary (wall for example). I need the flux in u direction which is parallel to the wall. Please help. Indrajit

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December 13, 2012, 03:26		#2
legendyxg New Member Yang Xiaoguang Join Date: Apr 2009 Posts: 24 Rep Power: 18	Hi Indra, Maybe you can first get the facet area vector A via F_AREA(A,f,t), and then multiply the component of A normal to the u direction, i.e. A[1] if u direction is the x direction, by U.

December 14, 2012, 02:51		#3
IndrajitW Member Indrajit Join Date: Nov 2012 Posts: 33 Rep Power: 15	Thanks a lot Yang!! I will see if that helps