Heterogeneous mixture of materials: "heterogeneous_mixture"

Input

material_type (see below)
number_of_constituents
For each:
   name
   material_type and parameters
material_parameters
mass_and_volume_cutoff (e.g. 1.0e-6)

Specific material types

• pressure and temperature equilibration
• pressure and temperature equilibration, with reactions
• pressure and temperature equilibration, with reactions and hotspot surface burn
• pressure and temperature equilibration, with reactions and hotspot surface burn, different rate for surface term