bottom and top surface of cylinder as seperate entities in grid generation(gambit)

ryan · November 7, 2009, 20:17

how do we make sure that top and bottom side of the cylinder are seperate entites while using gambit.I'm solving it only for 2d visvcous flow...????

ztdep · November 7, 2009, 20:28

what is the problem? I can not fully understand your question.

2-D viscourse flow caculation, then you should use a axis-symmetry coorinate.
Top is the pipe wall, bottome is the axis, the other two are inlet and outlet, respectively.

ryan · November 7, 2009, 20:41

well i have a cylinder in the computational domain as you specified....i have to make sure that the top side and the bottom side of the cylinder are seperate entities during the grid generation...how do i do that?????

ztdep · November 7, 2009, 20:52

you can define them different boundary name after the grid generation.

ryan · November 7, 2009, 21:02

how can i do tht...????

ryan · November 7, 2009, 21:58

i think i have to first create them as two seperate entities...how do i do that...i cant define a different boundary name...

November 7, 2009, 20:17	bottom and top surface of cylinder as seperate entities in grid generation(gambit)	#1
ryan New Member ryan robinson Join Date: Nov 2009 Posts: 8 Rep Power: 16	how do we make sure that top and bottom side of the cylinder are seperate entites while using gambit.I'm solving it only for 2d visvcous flow...????

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November 7, 2009, 20:28		#2
ztdep Senior Member p ding Join Date: Mar 2009 Posts: 427 Rep Power: 19	what is the problem? I can not fully understand your question. 2-D viscourse flow caculation, then you should use a axis-symmetry coorinate. Top is the pipe wall, bottome is the axis, the other two are inlet and outlet, respectively.

November 7, 2009, 20:41		#3
ryan New Member ryan robinson Join Date: Nov 2009 Posts: 8 Rep Power: 16	well i have a cylinder in the computational domain as you specified....i have to make sure that the top side and the bottom side of the cylinder are seperate entities during the grid generation...how do i do that?????

November 7, 2009, 20:52		#4
ztdep Senior Member p ding Join Date: Mar 2009 Posts: 427 Rep Power: 19	you can define them different boundary name after the grid generation.

November 7, 2009, 21:02		#5
ryan New Member ryan robinson Join Date: Nov 2009 Posts: 8 Rep Power: 16	how can i do tht...????

November 7, 2009, 21:58		#6
ryan New Member ryan robinson Join Date: Nov 2009 Posts: 8 Rep Power: 16	i think i have to first create them as two seperate entities...how do i do that...i cant define a different boundary name...