Second order upwinding scheme in OpenFoam

subash · May 13, 2010, 07:11

Hi,

I followed the instructions given in the userguide to run the tutorial problem(lid driven cavity flow) using a linearupwind(after modifiying the actual linear scheme for interpolation) scheme but the run gets killed with the following message "attempt to read beyond EOF". Can anyone let me know what this means and help me to implement the second order upwind scheme.

santos · May 13, 2010, 17:10

Hi there,

The following should work:

Code:

div(phi,U)      Gauss linearUpwind Gauss;

Regards,
Jose Santos

marine · June 14, 2010, 11:30

hello !

is there a difference between "Gauss linearUpwind Gauss" and "Gauss linearUpwind Gauss linear" ? do you know how it works ?

thanks a lot !

Marine

RuiVO · June 20, 2012, 08:49

Gauss linearUpwind Gauss does not work...

kmooney · June 20, 2012, 19:28

I believe the correct syntax is

Code:

Gauss linearUpwind phi

It needs the phi (flux) field to decided which direction is 'upwind' of the cell in question and generate the linear operators accordingly.

May 13, 2010, 07:11	Second order upwinding scheme in OpenFoam	#1
subash New Member subash Join Date: Feb 2010 Posts: 10 Rep Power: 16	Hi, I followed the instructions given in the userguide to run the tutorial problem(lid driven cavity flow) using a linearupwind(after modifiying the actual linear scheme for interpolation) scheme but the run gets killed with the following message "attempt to read beyond EOF". Can anyone let me know what this means and help me to implement the second order upwind scheme.

May 13, 2010, 17:10		#2
santos Senior Member Jose Luis Santos Join Date: Mar 2009 Location: Portugal Posts: 215 Rep Power: 18	Hi there, The following should work: Code: div(phi,U) Gauss linearUpwind Gauss; Regards, Jose Santos

June 20, 2012, 19:28		#5
kmooney Senior Member Kyle Mooney Join Date: Jul 2009 Location: San Francisco, CA USA Posts: 323 Rep Power: 18	I believe the correct syntax is Code: Gauss linearUpwind phi It needs the phi (flux) field to decided which direction is 'upwind' of the cell in question and generate the linear operators accordingly.

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June 14, 2010, 11:30		#3
marine Member Marine Join Date: Mar 2010 Posts: 38 Rep Power: 16	hello ! is there a difference between "Gauss linearUpwind Gauss" and "Gauss linearUpwind Gauss linear" ? do you know how it works ? thanks a lot ! Marine

June 20, 2012, 08:49		#4
RuiVO Member Rui Vizinho de Oliveira Join Date: Sep 2011 Posts: 31 Rep Power: 15	Gauss linearUpwind Gauss does not work...