Block Dominant

Introduction

• Maybe multiple node blocks – main entity is an element block and it has its own nodes and BC.
• Connectivity entity which specifies nodal contiguity between blocks.
• BC are local to a block, but can belong to a “family” which spans multiple blocks.
• This makes it easier to edit meshes by adding/subtracting blocks since the node numbering doesn’t need to be adjusted – everything local to a block.
• Makes it easier to support hybrid, multi-file meshes….

See CGNS for one example of how this is done.