Effect of gradient scheme on Nusselt Number -- CFD Online Discussion Forums

February 13, 2017, 03:04

Effect of gradient scheme on Nusselt Number

srv537

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Saurav Kumar

Join Date: Jul 2016

Posts: 80

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Hi,

i am simulating laminar flow with heat transfer in a duct and i am using structure type of mesh.

i used solve/set/expert to get Temperature gradient and based on that i defined local Nusselt Number.
the problem is when i changed the gradient schemes from Green-Gauss cell based to Green-Gauss node based then Averaged Nusselt number (Area Weighted Average ) changed by 15% but there is no change in local nusselt number, how is this possible? i am totally confused.

am i doing something wrong? pease suggest me.

Thank you,
Kind Regards,
Srv

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	Nu_Gradient_Scheme.png (62.7 KB, 4 views)

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