Monday, December 27, 2010

Rotating mesh using Rigid Motion option in ADINA-CFD

The photo below shows you the rotating mesh capability of ADINA-CFD which can be used for axial turbomachines (as they move with constant rpm).

As you see, there are two element groups one in red and one in green. The green element group is the "rotating mesh" element group while the red one is the "stationary mesh" element group.

The two element groups are separated by a small gap (smaller gaps are preferred) and the interface between the two element groups is configured as a sliding mesh.

Note that the rotaing mesh has "Quadrilateral" elements and the stationary one is "Delaunay" triangulation.