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-   -   [ANSYS Meshing] Concept of conformal and non-conformal interface (http://www.cfd-online.com/Forums/ansys-meshing/105880-concept-conformal-non-conformal-interface.html)

Anna Tian August 11, 2012 11:42

Concept of conformal and non-conformal interface
 
Hi

Could you tell me what's the concept of conformal and non-conformal interface? I tried to search for it online, but I didn't find any good answer. Thanks!

Far August 11, 2012 14:15

Both are interfaces and there is averaging of data on both sides before transferring to other side.

Conformal interface : An interface with equal no of nodes on both sides.

Non Conformal interface : An interface which does not have equal no of nodes on both sides

flotus1 August 13, 2012 02:49

Just a minor correction here:

A conformal interface is not defined by an equal number of nodes on both sides.
Instead, the meshes on both sides of the interface have to be conformal:D, which means that every node on one side of the interface can be matched with a node on the other side of the interface with a very low tolerance.
The advantage is that there is no (additional) interpolation necessary at a conformal interface. This makes the computation faster and more accurate.

Consequently, a non-conformal interface can be set at two faces with the same number of nodes.

sagarmore May 7, 2015 10:17

non conformal interface
 
Since data across non conformal interface is averaged and transferred is there significant loss in accuracy due to interpolation error?If error is large then which approach is better
1.domain divided in structured meshes joined with non conformal interface.or,
2.unstructured mesh in whole domain without need of interface
I am using multiblock method for horizontal axis wind turbine mesh which is separated in 3 multiblocks and merged

ghost82 May 7, 2015 11:52

Quote:

Originally Posted by flotus1 (Post 376743)
Just a minor correction here:

A conformal interface is not defined by an equal number of nodes on both sides.
Instead, the meshes on both sides of the interface have to be conformal:D, which means that every node on one side of the interface can be matched with a node on the other side of the interface with a very low tolerance.
The advantage is that there is no (additional) interpolation necessary at a conformal interface. This makes the computation faster and more accurate.

Consequently, a non-conformal interface can be set at two faces with the same number of nodes.

So, by your definition, if I have an interface which splits a moving from a static zone, even if I have the two adjacent surfaces with the same number of nodes and at the same distance, this is a non-conformal interface, as when sliding the nodes will not overlap.
So, a conformal interface can be obtained only for an interface which connects 2 static zones?

Thanks


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