Adjust Tools: Reorder Nodes

Description

Renumbers all nodes in the model according to the selected method.

Dialog

Method

Node reordering method.

• Line VX / VY / VZ

  Three values defining a direction vector.

  Nodes are renumbered by sorting them in planes perpendicular to the specified vector.

  For a regular mesh, specifying the vector in the longest direction of model will produce a near optimal ordering in relation to both bandwidth and matrix size.

  

• Tree (Starting Node)

  Nodes are renumbered outward from the specified Starting Node, based on the binary tree definition of the connectivity.

  

• AMD

  An approximate minimum degree algorithm that renumbers nodes to minimise the fill-in.

  This option is designed to be used in conjunction with the direct sparse matrix solver scheme.

Common Uses

Node reordering is performed internally upon running a solver according to the rule specified under SOLVERS: Matrix tab. This tool can be used to perform the node reordering prior to running the solver, which will reduce the total solution time if the model needs to be solved multiple times.

See Also

• SOLVERS: Matrix