Solving for only one velocity component

pascool · February 11, 2013, 15:13

Hi foamers,

is it possible to solve just for one velocity component?
I want to simulate a straight duct with periodic boundary conditions.
By definition the y-component of the velocity should be zero.

Otherwise I get convergence problems with Uy

Regards,

Pascal

immortality · February 11, 2013, 16:00

hi
yes.its simple.just in blockmeshdict file define planes at y and z direction in empty dictionary.in this manner your problem will be one dimensional if you intended that.
Be successful.

pascool · February 11, 2013, 17:01

Thank you for your reply immortality,

the thing is I don't want it completely 1D so I need Ux depending on the coordinate y.
Only the solving for Uy should be switched off.
The in and outlet planes are already defined as cyclic so I cannot specify to empty

February 11, 2013, 15:13	Solving for only one velocity component	#1
pascool New Member Join Date: Oct 2012 Posts: 16 Rep Power: 2	Hi foamers, is it possible to solve just for one velocity component? I want to simulate a straight duct with periodic boundary conditions. By definition the y-component of the velocity should be zero. Otherwise I get convergence problems with Uy Regards, Pascal

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February 11, 2013, 16:00		#2
immortality Senior Member ehsan Join Date: Oct 2012 Location: Iran Posts: 1,167 Rep Power: 6	hi yes.its simple.just in blockmeshdict file define planes at y and z direction in empty dictionary.in this manner your problem will be one dimensional if you intended that. Be successful.

February 11, 2013, 17:01		#3
pascool New Member Join Date: Oct 2012 Posts: 16 Rep Power: 2	Thank you for your reply immortality, the thing is I don't want it completely 1D so I need Ux depending on the coordinate y. Only the solving for Uy should be switched off. The in and outlet planes are already defined as cyclic so I cannot specify to empty