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June 29, 2021 at 2:55 pm #5758
Adrian
Keymaster

This is indeed related to grid refinement. SuperLatticeRefinementMetricKnudsen3D implements a refinement criterion [1] to help determine where to refine to which degree. This is one part of a prototype implementation [2] that I pulled into the release as it is also useful in other contexts. e.g. to check whether a simulation gets close to diverging or to identify problematic regions.

[1]: Automatic grid refinement criterion for lattice Boltzmann method [Lagrava et al.]
[2]: Prototype of grid refinement in OpenLB 1.3 written for my Bachelor thesis

  • This reply was modified 4 years, 6 months ago by Adrian.