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doc:user:elements:volumes:thixo_scheilliquidfractionmatlaw

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doc:user:elements:volumes:thixo_scheilliquidfractionmatlaw [2013/07/11 15:15] – created jorisdoc:user:elements:volumes:thixo_scheilliquidfractionmatlaw [2016/03/30 15:23] (current) – external edit 127.0.0.1
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 +====== 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 Tl                            |  ''FL_TS''          ''TM/TO''     |
 +|     Liquidus Tl                            ''FL_TL''          ''TM/TO''     |
 +|     Equilibrium partition ratio r  |  ''FL_EXP''    |      ''TM/TO''     |
 +
 +===== LashkariEffectiveLiquidFractionMatLaw =====
 +
 +=== Description ===
 +
 +Computes the **effective liquid fraction** feffl, excluding liquid entrapped inside solid grains, which does not contribute to the flow. Liquid fraction fl is computed with Scheil law. Some liquid is released when bonds are broken, so feffl depends on the cohesion degree λ.
 +
 +$$
 +f_l^{eff} = f_l [1-\lambda(1-f_l)]
 +$$
 +
 +
 +
 +
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