how to do bandwidth reduction using gambit

gambituser · January 27, 2010, 16:07

Hi Pls I ve generated a mesh using gambit, but I need to do bandwidth reduction pls can someone guide me to this pls.

DoHander · January 27, 2010, 17:10

You can do this in Fluent (use Reorder).

Do

gambituser · January 28, 2010, 07:39

Pls can you guide me step by step to it Pls. I have Gambit software, How do I go to fluent or Do I need to have Fluent Software as well.

D.Martelli · January 28, 2010, 08:01

You need fluent software too. Gambit is only the pro-processor once u created the mesh in gambit u've to eported (file/export...) for fluent in fluent the grid/reorder/domain....

gambituser · January 28, 2010, 08:21

Ok, Thanks for ur reply,

I have not got the fluent sotware, Please is there any other way I can do this Please.

DoHander · January 28, 2010, 17:07

The legal way is to buy a license or to obtain one from your University.

Do

gambituser · January 28, 2010, 17:32

Thanks for ur reply,

The license is very expensive and I dont know how to get one from the university, At uni, we use ideas for preprocesing but its not easy to use for more complex geometries. I guess I can import the mesh in ideas and do the bandwidth reduction there and then export it.

What do u think Please.

DoHander · January 30, 2010, 13:55

Do you plan to use this mesh in your own solver or why do you want to do this bandwidth reduction ?

gambituser · January 31, 2010, 09:32

Yes, I plan to use the mesh in my own solver.

DoHander · January 31, 2010, 13:52

Then I'm not sure you can use the band reduction of Fluent. Band reduction must be corroborated with the way your solver creates the array given by the implicit discretization.

(BTW if your solver is explicit you don't need bandwidth reduction.)

If I remeber correctly ParaMetis has some bandwidth reduction routines, check if you can link these to your solver ...

Do

January 27, 2010, 16:07	how to do bandwidth reduction using gambit	#1
gambituser New Member anonymous Join Date: Jan 2010 Posts: 5 Rep Power: 16	Hi Pls I ve generated a mesh using gambit, but I need to do bandwidth reduction pls can someone guide me to this pls.

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January 27, 2010, 17:10		#2
DoHander Senior Member Join Date: Nov 2009 Posts: 411 Rep Power: 20	You can do this in Fluent (use Reorder). Do

January 28, 2010, 07:39		#3
gambituser New Member anonymous Join Date: Jan 2010 Posts: 5 Rep Power: 16	Pls can you guide me step by step to it Pls. I have Gambit software, How do I go to fluent or Do I need to have Fluent Software as well.

January 28, 2010, 08:01		#4
D.Martelli New Member Daniele Join Date: Dec 2009 Location: Pisa Posts: 11 Rep Power: 16	You need fluent software too. Gambit is only the pro-processor once u created the mesh in gambit u've to eported (file/export...) for fluent in fluent the grid/reorder/domain....

January 28, 2010, 08:21		#5
gambituser New Member anonymous Join Date: Jan 2010 Posts: 5 Rep Power: 16	Ok, Thanks for ur reply, I have not got the fluent sotware, Please is there any other way I can do this Please.

January 28, 2010, 17:07		#6
DoHander Senior Member Join Date: Nov 2009 Posts: 411 Rep Power: 20	The legal way is to buy a license or to obtain one from your University. Do

January 28, 2010, 17:32		#7
gambituser New Member anonymous Join Date: Jan 2010 Posts: 5 Rep Power: 16	Thanks for ur reply, The license is very expensive and I dont know how to get one from the university, At uni, we use ideas for preprocesing but its not easy to use for more complex geometries. I guess I can import the mesh in ideas and do the bandwidth reduction there and then export it. What do u think Please.

January 30, 2010, 13:55		#8
DoHander Senior Member Join Date: Nov 2009 Posts: 411 Rep Power: 20	Do you plan to use this mesh in your own solver or why do you want to do this bandwidth reduction ?

January 31, 2010, 09:32		#9
gambituser New Member anonymous Join Date: Jan 2010 Posts: 5 Rep Power: 16	Yes, I plan to use the mesh in my own solver.

January 31, 2010, 13:52		#10
DoHander Senior Member Join Date: Nov 2009 Posts: 411 Rep Power: 20	Then I'm not sure you can use the band reduction of Fluent. Band reduction must be corroborated with the way your solver creates the array given by the implicit discretization. (BTW if your solver is explicit you don't need bandwidth reduction.) If I remeber correctly ParaMetis has some bandwidth reduction routines, check if you can link these to your solver ... Do