Overset Mesh Tutorial Ansys Fluent Complete

Описание

An overset mesh typically containing a body of interest such as a
boat or a gear is superimposed on a background mesh containing
the surrounding geometry and data is interpolated between the two
This approach allows complex motion and moving parts to be easily
set up and simulated.
Overset meshes cuts down the entire analysis workflow
The cells from the two meshes are sorted into four types:
– Active Cells
• Discretizing governing equations are solved
– Passive Cells
• No equations are solved
– Acceptor and Donor Cells at the overset boundary and the
background mesh
• The link between the two meshes
The Overset Mesh Workflow
1. Two regions are created: A background region
containing the far-field flow domain, and a separate
the region surrounding the body of interest (overset
body)
2. Both regions are meshed separately – There will be
a zone where cells from both regions overlap each
other in the same space
3. The outer boundary of the overset body is set to
“Overset Mesh”, and an “Overset Mesh Interface” is
created between the two regions
4. As the overset body moves into the background
the region, the overlapping zone will change