[ICEM] Meshing problem

bhuwal_anurag · August 26, 2015, 06:28

Hello all, I am facing a problem in ICEM. I have a concentric cylinder geometry .1m inner dia from which air is flowing and outer 1m in which solid is there i have named part as inlet,outlet,outer body, and defined inner circle as pipe because it has some conductivity and i am working on heat transfer when created a structured o grid and imported in fluent the pipe part is now coming but when i am creating a unstructured mesh pipe part is coming in fluent, I have to use structure mesh only and i tried different way of creating it but for structured it is now showing. Anyone will tell me what can i do or this is the bug in icem?

shereez234 · August 26, 2015, 12:35

Quote:

Originally Posted by bhuwal_anurag

Hello all, I am facing a problem in ICEM. I have a concentric cylinder geometry .1m inner dia from which air is flowing and outer 1m in which solid is there i have named part as inlet,outlet,outer body, and defined inner circle as pipe because it has some conductivity and i am working on heat transfer when created a structured o grid and imported in fluent the pipe part is now coming but when i am creating a unstructured mesh pipe part is coming in fluent, I have to use structure mesh only and i tried different way of creating it but for structured it is now showing. Anyone will tell me what can i do or this is the bug in icem?

This is not a bug. From what I understand you are trying to import a structured mesh to fluent. Fluent supports unstructured meshes from ICEM.

How to solve:
Export your structured mesh to CFX format if you have that software. Because CFX can handle structured meshes( I suggest CFX because you have access to ANSYS package I am guessing).

Constraints:
You cannot use fluent for structured meshes.
Fluent = Unstructured
CFX = Both structured and unstructured

I hope this makes things clear.

bhuwal_anurag · August 26, 2015, 23:59

Hi,
I am converting structure mesh into unstructured mesh in icem in the tree and exporting it to fluent but still i didnt get any change it wont take and wont create interface.

nikesh · August 27, 2015, 00:52

Like Shereez suggested, use your original mesh in CFX. You should not have much problem operating CFX if you are familiar with Fluent.

Far · August 27, 2015, 02:50

Quote:

Originally Posted by shereez234

This is not a bug. From what I understand you are trying to import a structured mesh to fluent. Fluent supports unstructured meshes from ICEM.

How to solve:
Export your structured mesh to CFX format if you have that software. Because CFX can handle structured meshes( I suggest CFX because you have access to ANSYS package I am guessing).

Constraints:
You cannot use fluent for structured meshes.
Fluent = Unstructured
CFX = Both structured and unstructured

I hope this makes things clear.

Both are unstructured solvers. CFX even does not use the hexa mesh at all when solving. Every element in CFX has polygonal shape...

shereez234 · August 27, 2015, 05:30

Quote:

Originally Posted by Far

Both are unstructured solvers. CFX even does not use the hexa mesh at all when solving. Every element in CFX has polygonal shape...

Okay I am not so sure about CFX I use fluent and it supports unstructured only thanks Far

Far · August 27, 2015, 06:09

Quote:

Originally Posted by shereez234

Okay I am not so sure about CFX I use fluent and it supports unstructured only thanks Far

It used to support structured mesh up to, I guess, Version 4.

Note: Version number change in ANSYS is much faster than windows

bhuwal_anurag · August 27, 2015, 06:54

So any solution for me why it is not showing part when i do structure and convert it??

shereez234 · August 27, 2015, 08:10

Quote:

Originally Posted by Far

It used to support structured mesh up to, I guess, Version 4.

Note: Version number change in ANSYS is much faster than windows

That is true

. I have been just using 121 and 145

shereez234 · August 27, 2015, 08:11

Quote:

Originally Posted by bhuwal_anurag

So any solution for me why it is not showing part when i do structure and convert it??

I am guessing if you have a hexa unstructured mesh fluent should support it. Can you show some pictures of the error messages

Far · August 27, 2015, 09:20

Quote:

Originally Posted by bhuwal_anurag

So any solution for me why it is not showing part when i do structure and convert it??

Follow this thread:

http://www.cfd-online.com/Forums/ans...em-fluent.html

August 26, 2015, 06:28	Meshing problem	#1
bhuwal_anurag New Member anurag Join Date: Aug 2015 Posts: 6 Rep Power: 10	Hello all, I am facing a problem in ICEM. I have a concentric cylinder geometry .1m inner dia from which air is flowing and outer 1m in which solid is there i have named part as inlet,outlet,outer body, and defined inner circle as pipe because it has some conductivity and i am working on heat transfer when created a structured o grid and imported in fluent the pipe part is now coming but when i am creating a unstructured mesh pipe part is coming in fluent, I have to use structure mesh only and i tried different way of creating it but for structured it is now showing. Anyone will tell me what can i do or this is the bug in icem?

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August 26, 2015, 23:59		#3
bhuwal_anurag New Member anurag Join Date: Aug 2015 Posts: 6 Rep Power: 10	Hi, I am converting structure mesh into unstructured mesh in icem in the tree and exporting it to fluent but still i didnt get any change it wont take and wont create interface.

August 27, 2015, 00:52		#4
nikesh Member Nikesh Bhattarai Join Date: Nov 2011 Location: Sacheon, South Korea Posts: 82 Rep Power: 13	Like Shereez suggested, use your original mesh in CFX. You should not have much problem operating CFX if you are familiar with Fluent.

August 27, 2015, 06:54		#8
bhuwal_anurag New Member anurag Join Date: Aug 2015 Posts: 6 Rep Power: 10	So any solution for me why it is not showing part when i do structure and convert it??