Hi everyone,
I use to make my meshes in ICEM HEXA and then import them into CFX-5-BUILD. I can define my domain and subdomains as I wish. Every boundary condition (2D faces) previously defined in ICEM are exported and I can choose which one will be an external BC (e.g. inlet, outlet, opening, etc...). However I can't do an internal boundary condition, with exception of thin walls, like a USER-2D patch in CFX-4. By now, my intentions are just for post-processing only. Once CFX-POST will bring the default objects, i.e. the subdomains, the default boundary (external wall) and the external BC's (inlets, outlets, etc...), I won't be able to choose the internal boundary which is available in CFX-BUILD but not available in POST. So, which BC can I set to enable these internal surfaces for post-processing intentions?


Thanks in advance, cfd guy

Hmmmm, sounds like a problem I face too. No USER2D in CFX-5......

The only way I know to view internal surfaces, is by defining sub domains. Then the boundaries of these sub domains are available for postprocessing. Unfortunately, all boundaries are being post-processed at once. I don't know how to select a single boundary of a sub domain.

If the internal surface you want to post-process is a rectangular, you can define the surface with 3 points and define its borders in for example z and y direction. Then you can calculate averages, mass flows and so on with the calculator.

Astrid

If you can describe your suface with an expression, then create this expression in Post and create an isosurface at the required value. For example, r=sqrt(x^2 + y^2), then create an isosurface at r=1. Mike

Hi! I'm a relative new user of CFX and I have the same problem in my simulation, I need an internal surface to plot results in CFX- Post. Did you find how to do this finally? Thanks,

Claudia