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-   -   grid problem (http://www.cfd-online.com/Forums/fluent/30049-grid-problem.html)

seb July 18, 2002 10:20

grid problem
 
Hi. Can somebody tell me if it's possible to create hangin node on a edge in Gambit. Thank you for your help.

Lanre July 18, 2002 14:26

Re: grid problem
 
Hanging nodes are created during grid adaption in FLUENT. You can't create hanging nodes in GAMBIT.

Elana July 18, 2002 22:40

Re: grid problem
 
Jus to clarify..Wht are hanging nodes. and when are they used for?

Gavin July 19, 2002 04:10

Re: grid problem
 
Hanging nodes: when you need to refine an area of a mesh due to lack of detail in your solution (BL maybe), for each face within selected region, a node is imposed in the centre, thus dividing the cell face into four. This node is known as a "hanging node". It is a method of selective refining, and is usually applied to cells of certain gradient (y+ for example).

Laika July 19, 2002 09:13

Re: grid problem
 
I have a different understanding of what a hanging node is.

before refinement (two cells)

*-----------*-----------*
: : :
: : :
: : :
: : :
: : : *-----------*-----------*

after refinement (5 cells)

*-----------*-----*-----*
: : : :
: : : :
: a-----b-----*
: : : :
: : : : *-----------*-----*-----*

In my understanding, a is a hanging node, and b isn't.

Laika, still orbiting


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