Line source boundary conditions in Cfx

fek66 · March 15, 2011, 06:43

Hi ALL ;

I want to setup a line source boundary condition for emission of a pollutant in a street ( z =0) with Cfx PRE with mass flow inlet option . only point source option exists.
if any one help me .

stumpy · March 15, 2011, 14:35

There are no line sources. You could create a series of point sources, or create a long thin boundary and apply a boundary source.

fek66 · March 16, 2011, 10:57

many thanks.

fek66 · March 31, 2011, 10:01

can you explain how can we create a long thin boundary to apply a boundary source with CFX PRE.

stumpy · March 31, 2011, 13:58

Normally you would imprint a face back in DesignModeler so that you had a 2D mesh region to pick in CFX-Pre. You could use the Edit Mesh tools in CFX-Pre (see doc), but you can obviously only pick existing element faces.

March 15, 2011, 06:43	Line source boundary conditions in Cfx	#1
fek66 Member anonymous Join Date: Jan 2011 Posts: 42 Rep Power: 15	Hi ALL ; I want to setup a line source boundary condition for emission of a pollutant in a street ( z =0) with Cfx PRE with mass flow inlet option . only point source option exists. if any one help me .

March 31, 2011, 13:58		#5
stumpy Senior Member Join Date: Apr 2009 Posts: 531 Rep Power: 21	Normally you would imprint a face back in DesignModeler so that you had a 2D mesh region to pick in CFX-Pre. You could use the Edit Mesh tools in CFX-Pre (see doc), but you can obviously only pick existing element faces. fek66 likes this.

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March 15, 2011, 14:35		#2
stumpy Senior Member Join Date: Apr 2009 Posts: 531 Rep Power: 21	There are no line sources. You could create a series of point sources, or create a long thin boundary and apply a boundary source.

March 16, 2011, 10:57		#3
fek66 Member anonymous Join Date: Jan 2011 Posts: 42 Rep Power: 15	many thanks.

March 31, 2011, 10:01		#4
fek66 Member anonymous Join Date: Jan 2011 Posts: 42 Rep Power: 15	can you explain how can we create a long thin boundary to apply a boundary source with CFX PRE.