[saisanthoshm88]

I had a difficulty in understanding the concept of interfaces in CFX. My question is that if I had a surface common to two volumes (with in the same fluid domain) but there isn’t any fluid transfer (or) heat transfer occurring across it (I mean if the surface is supposed to act as a wall) and if I’m not even interested to model it as a Thin material ( well I mean the surface is of zero thickness) (or) give a thermal contact resistance to it. The whole domain is tet meshed and as such there is no issue of dissimilar mesh types.

Then in such case do I still need to have the surface as an interface in CFX, of course by setting it as a No slip wall in the additional interface models , just because it gets represented by two different meshes in CFX, one from volume1 and the other from volume2 and because the element size on these two meshes representing the surface is different so there is a node disconnectivity between these meshes as such?