Hi,

I am modelling a 2D VAWT. My geometry consists of a large outer region and a rotating cylindrical region within it. In order to achieve matching of the mesh at the interface, I have followed the advice as outlined in another forum, which said that I need to import the 2 parts, freeze them, name the selection and the Create a new part in Design Modeller. Following meshing in ICEM, it was expected that Fluent would recognise this and identify the interface (see http://www.cfd-online.com/Forums/ansys-meshing/107846-match-control-interface-between-two-separate-geometries.html)

I have done everything that has been suggested to achieve a good interface between the 2 parts, which has worked and which is great.

However, when I go into Fluent, and open the "Create/Edit Mesh Interface", only one interface name appears and as such, I cannot continue with the work. I have tried freezing the part, naming the selections (faces) etc. but I am still getting no-where and I cannot find my error.

Can you provide advice as to what I may be doing wrong?

(I will outline the steps that I have taken in brief below)

Thanks for your help,

Aidan

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DESIGN-MODELLER:

Imported rectangle section (with circle removed) (i.e. Part 1). Pressed "Add Frozen", pressed Generate. Named Selections (Inlet, Outlet, Interface 1, Face1).

Imported rotational section, (Part 2). Pressed "Add Frozen", pressed Generate. Named Selections (Airfoils, Interface 2, Face2).

Created New Part called "Total".

ICEM:

Opened geometry. Blocking ->2D Surface Blocking, Associated Edges to Curves. Viewed Pre-mesh.

Outlined Boundary Conditions - at this section, only 1 of the interfaces appears. Then pressed "Write Input" to Fluent, in the hope that the zones would be recognized as mentioned in an earlier post.

FLUENT:

Opened geometry, Viewed "Cell Zone Conditions" and the 2 zones appear (i.e. Face 1 and Face 2) - note, these are different to Parts 1 and 2, but are as defined by "named selection".

Pressed Mesh Interface -> Create. At this point, I can only see one of the interfaces and herein lies my problem.

I have checked for interference between Parts, renamed selections, tried to name just one interface etc. but nothing has worked to date. Therefore, I would really appreciate any assistance and guidance on the problem.

Apologies if the description is a bit brief, but if you need more detail, I'd be happy to provide it. Thanks again.

Aidan