effective viscosity

sajad_abasi · October 6, 2011, 05:23

hi to all.

i am modelling a porous domain.and i want to know how ansys cfx calculate the effective viscosity

is there any relation to calculate it manully?
thanks.

Far · October 6, 2011, 16:10

eddy viscosity + laminar viscosity

ghorrocks · October 6, 2011, 19:18

This is all described in the documentation, and if that is not good enough try a turbulence modelling text like "Turbulence Modelling for CFD" by Wilcox.

sajad_abasi · October 7, 2011, 13:40

hi.

thanks for your reply.this is not what you think.in porous region and porous equation always an effective viscosity is defined.it differs from "laminar+turbulent viscosity".

October 6, 2011, 05:23	effective viscosity	#1
sajad_abasi Member sajad Join Date: Nov 2010 Posts: 51 Rep Power: 15	hi to all. i am modelling a porous domain.and i want to know how ansys cfx calculate the effective viscosity is there any relation to calculate it manully? thanks.

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October 6, 2011, 16:10		#2
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	eddy viscosity + laminar viscosity

October 6, 2011, 19:18		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,844 Rep Power: 144	This is all described in the documentation, and if that is not good enough try a turbulence modelling text like "Turbulence Modelling for CFD" by Wilcox.

October 7, 2011, 13:40		#4
sajad_abasi Member sajad Join Date: Nov 2010 Posts: 51 Rep Power: 15	hi. thanks for your reply.this is not what you think.in porous region and porous equation always an effective viscosity is defined.it differs from "laminar+turbulent viscosity".