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doc:user:elements:volumes:thixo_scheilliquidfractionmatlaw

Liquid fraction

The class LiquidFractionMatLaw manages all liquid fraction evolution laws, specific to thixotropic materials. These laws are described below.

:!: Careful: Only works if used with thixotropic materials (ThixoEvpIsoHHypoMaterial or ThixoTmEvpIsoHHypoMaterial).

ScheilLiquidFractionMatLaw

Description

Scheil law. $$ f_l = \left( \frac{T-T_s}{T_l-T_s} \right) ^{\frac{1}{r-1}} $$

Parameters

Name Metafor Code Dependency
Solidus $ T_l $ FL_TS TM/TO
Liquidus $ T_l $ FL_TL TM/TO
Equilibrium partition ratio $ r $ FL_EXP TM/TO

LashkariEffectiveLiquidFractionMatLaw

Description

Computes the effective liquid fraction $ f_l^{eff} $, excluding liquid entrapped inside solid grains, which does not contribute to the flow. Liquid fraction $ f_l $ is computed with Scheil law. Some liquid is released when bonds are broken, so $f_l^{eff} $ depends on the cohesion degree $ \lambda $.

$$ f_l^{eff} = f_l [1-\lambda(1-f_l)] $$

doc/user/elements/volumes/thixo_scheilliquidfractionmatlaw.txt · Last modified: 2016/03/30 15:23 (external edit)