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Subcycling

Subcycling (Mixed Time Integration)

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Elements are sorted based on their step size into groups, whose step size is some even multiple of the smallest element step size.

Elements are sorted three times:

  1. By element number in ascending order
  2. By material number for large vector blocks
  3. By connectivity to insure disjointness for right hand side vectorization.

Advantage:

  • Large speed-up for problems with di erences in element size.
  • Allows local mesh refinement without penalty.