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WIP: Feature/multidomain on 3.0

Timo Koch requested to merge feature/mixeddimension-on-3.0 into master

This merge request adds a multidomain module to Dumux. It is a fairly generic module that provides a generic assembler for multi-domain problems (more than two domains possible). The domains can have different dimension. The coupling manager concept allows to specify coupling dof dependencies and defines how to evaluate coupling residuals / residual derivatives.

The goal is to be able to use this module for

  • equal-dimension multi-domain problems (e.g. Darcy-Stokes coupling)
  • mixed-dimension multi-domain problems (e.g. embedded mixed-dimension methods, embedded fracture models)
  • multi-physics problems (e.g. dual-continuum models)


  • depends on !737 (merged) and !738 (merged) to be merged.
  • check function overloads for different element types, probably need domainId as element types can be the same
  • add coupling manager for darcy-darcy domain decomposition
  • implement additional derivatives for caching disabled -> custom ElementVolVar type
  • implement explicit assembly
  • Unify newtoncontroller with staggered newtoncontroller (depends on !762 (merged))
Edited by Timo Koch

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