UDF/FLUENT Macros to determine cell size vector

bryankelly · October 8, 2012, 21:26

Hello everyone,

I am trying to write a UDF for a source term in FLUENT. This term is scaled by a constant that is dependent on the scalar product of the cell size vector L = (dx,dy,dz). All I can seem to find is C_VOLUME(c,t), I am assuming FLUENT uses L in some form to calculate cell volume but I may not have access to it. This needs to be able to work for both uniform and non-uniform grids. If anyone knows of a way to calculate this within FLUENT please respond.

Thanks!

bobinson · May 12, 2017, 07:18

Hi did you find how to retrieve the dx,dy,dz? If yes could you please share?

October 8, 2012, 21:26	UDF/FLUENT Macros to determine cell size vector	#1
bryankelly New Member anonymous Join Date: Oct 2012 Posts: 2 Rep Power: 0	Hello everyone, I am trying to write a UDF for a source term in FLUENT. This term is scaled by a constant that is dependent on the scalar product of the cell size vector L = (dx,dy,dz). All I can seem to find is C_VOLUME(c,t), I am assuming FLUENT uses L in some form to calculate cell volume but I may not have access to it. This needs to be able to work for both uniform and non-uniform grids. If anyone knows of a way to calculate this within FLUENT please respond. Thanks!

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May 12, 2017, 07:18		#2
bobinson New Member SV Join Date: Apr 2012 Posts: 15 Rep Power: 14	Hi did you find how to retrieve the dx,dy,dz? If yes could you please share?