2D in Fluent Vs 2D in CFX

mohammad · January 6, 2012, 09:28

Hi everybody,
I want to know that does the method we use in CFX for a 2D in FLUENT?
I have solved a 2D model in CFX but it gives me floating point error in FLUENT....

As you may know, in CFX we just generate a mesh with two nodes in depth, and this will be our 2 D model....I know that FLUENT is able for 2D simulation...i just want to know that does the same model with 2 nodes-in-depth work in FLUENT or not...

if not, what do you think might be the cause of error in my case?

Thanks a lot

Far · January 6, 2012, 10:02

As you know CFX is not the 2-D solver. Therefore to run this case you should adopt any one of the following approache:

1. Use the 2-D mesh (better approach)

2. use the symmetry condition on both sides

mohammad · January 6, 2012, 10:05

Hi Far,
Thank you for your reply. I know that about Fluent.
My question is this:" Is a 2 node-in-depth mesh valid in FLUENT?

Regards

Far · January 6, 2012, 10:10

Yes it is valid, in this case you need to apply the symmetry on both faces.

mohammad · January 6, 2012, 10:12

Thanks a lot

Far · January 6, 2012, 10:30

but be careful and check solution with more nodes as well

January 6, 2012, 09:28	2D in Fluent Vs 2D in CFX	#1
mohammad Senior Member mohammad Join Date: Dec 2010 Location: UK Posts: 245 Rep Power: 16	Hi everybody, I want to know that does the method we use in CFX for a 2D in FLUENT? I have solved a 2D model in CFX but it gives me floating point error in FLUENT.... As you may know, in CFX we just generate a mesh with two nodes in depth, and this will be our 2 D model....I know that FLUENT is able for 2D simulation...i just want to know that does the same model with 2 nodes-in-depth work in FLUENT or not... if not, what do you think might be the cause of error in my case? Thanks a lot

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January 6, 2012, 10:02		#2
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	As you know CFX is not the 2-D solver. Therefore to run this case you should adopt any one of the following approache: 1. Use the 2-D mesh (better approach) 2. use the symmetry condition on both sides

January 6, 2012, 10:05		#3
mohammad Senior Member mohammad Join Date: Dec 2010 Location: UK Posts: 245 Rep Power: 16	Hi Far, Thank you for your reply. I know that about Fluent. My question is this:" Is a 2 node-in-depth mesh valid in FLUENT? Regards

January 6, 2012, 10:10		#4
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	Yes it is valid, in this case you need to apply the symmetry on both faces.

January 6, 2012, 10:12		#5
mohammad Senior Member mohammad Join Date: Dec 2010 Location: UK Posts: 245 Rep Power: 16	Thanks a lot

January 6, 2012, 10:30		#6
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	but be careful and check solution with more nodes as well