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Difference between Mesh(grid) interfaces and Interface B.c

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Old   April 9, 2012, 01:35
Default Difference between Mesh(grid) interfaces and Interface B.c
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mohamed khedr emam
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My Inquiry is simple

What is the difference between Mesh(Grid) interfaces and Interface B.c For MRF problem

Note : mesh interfaces (Grid) is not defined and i tries to generate it from ICEM

see attached image pls.

Thanks in advance
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File Type: jpg interface1.jpg (60.6 KB, 27 views)
File Type: jpg interface2.jpg (54.1 KB, 20 views)
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Old   April 12, 2012, 10:44
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any explanation, please
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Old   April 12, 2012, 11:07
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Hi,
I am not sure if I understand your problem.
I don't have knowledge of ICEM but u can change the BC in Fluent to Interface BC (mean data at this surface or plane or line will be shared by other surface or plane or line) as it is in Fig. 1. Mesh interface (in Fig. 2) is just a name of interface (User input) that u are creating from two interface zones.

Form Fig. 2, Its seems that u have only one boundary as the interface BC. You need two
boundary as interface to crate mesh interface.
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Old   April 12, 2012, 11:20
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Quote:
Originally Posted by banty View Post
Form Fig. 2, Its seems that u have only one boundary as the interface BC. You need two
boundary as interface to crate mesh interface.
We close to each other , Is Mesh interface ( if two boundaries) Like (same final result ) Interface B.c

the problem is Am I reduce efforts to make (two Boundary) to meet Mesh Interfaces condition and work with Interface B.c.

That is what i want to know

Thanks in advance
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Old   April 12, 2012, 11:27
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No u need two boundary for crating mesh interface.
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Old   April 12, 2012, 11:44
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Quote:
Originally Posted by banty View Post
No u need two boundary for crating mesh interface.
You mean Interface B.c is sufficient , Are you sure
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Old   April 12, 2012, 11:47
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There may be other way to do also but I am sure about this (Interface BC)
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Old   April 12, 2012, 11:51
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Quote:
Originally Posted by banty View Post
There may be other way to do also but I am sure about this (Interface BC)

o.k i will run Fluent with Interface B.c and back tell you what happen thanks alot
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Old   April 14, 2012, 23:34
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Dear Banty

As I excepted , an warning appears during mesh check "WARNING: Unassigned interface zone detected for interface 34"

And by searching this type of warning , I found this "To define an interface you will require two interface boundary conditions (one on either side of the interface)"

check this "unassigned interface_zones" Problem

And I said before, we should meet Mesh Interfaces (two Boundary)condition

thanks in advance
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Old   April 16, 2012, 14:11
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Thats correct.
Once u have two boundary as an interface boundary condition then u have to defined the interface zone. plz see fluent user guide.
http://jullio.pe.kr/fluent6.1/help/html/ug/node142.htm
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