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

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

Jus to clarify..Wht are hanging nodes. and when are they used for?

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).

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