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Effective viscosity

To compute the viscosity given stress of strainrate use:

GeoParams.compute_viscosity_εII — Function
compute_viscosity_εII(s::AbstractConstitutiveLaw, εII, kwargs...)

Compute effective viscosity given a 2nd invariant of the deviatoric strain rate tensor, extra parameters are passed as a named tuple, e.g., (;T=T)

source
GeoParams.compute_viscosity_τII — Function
compute_viscosity_τII(s::AbstractConstitutiveLaw, τII, kwargs...)

Compute effective viscosity given a 2nd invariant of the deviatoric stress tensor and, extra parameters are passed as a named tuple, e.g., (;T=T)

source