Mesh control in FLUENT.

donminoti · March 12, 2011, 11:45

Hi,
I am a new FLUENT USER, i want to carry out a simulation. and i need to know how can i change or control my node indices. in such way that i can impose an initial random Velocity field and unsteady fluctuations at the boundary (node by node) using UDFs. For post processing i will do statistics using my own Programs?. (it's non uniform grid then i can't use coordinates to do these tasks)

Hope that it was clear. don't hesitate for further information about the simulation.

any help would be great. Sorry i am very new to fluent.

Amir · March 12, 2011, 15:02

Hi Belamou,
first you should know that you can set parameters on cells not nodes, you can access values one nodes by interpolating manually over cells.(except nodes coordinates)
in ordering of nodes, I have such experience in structured grids, you can print coordinates of nodes in a file for finding out the order that FLUENT uses but for unstructured grids it's too difficult I think.

March 12, 2011, 11:45	Mesh control in FLUENT.	#1
donminoti Member belamou Join Date: Apr 2009 Posts: 40 Rep Power: 17	Hi, I am a new FLUENT USER, i want to carry out a simulation. and i need to know how can i change or control my node indices. in such way that i can impose an initial random Velocity field and unsteady fluctuations at the boundary (node by node) using UDFs. For post processing i will do statistics using my own Programs?. (it's non uniform grid then i can't use coordinates to do these tasks) Hope that it was clear. don't hesitate for further information about the simulation. any help would be great. Sorry i am very new to fluent.

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March 12, 2011, 15:02		#2
Amir Senior Member Amir Join Date: May 2009 Location: Montreal, QC Posts: 735 Blog Entries: 1 Rep Power: 22	Hi Belamou, first you should know that you can set parameters on cells not nodes, you can access values one nodes by interpolating manually over cells.(except nodes coordinates) in ordering of nodes, I have such experience in structured grids, you can print coordinates of nodes in a file for finding out the order that FLUENT uses but for unstructured grids it's too difficult I think.