7.6.20.12.27. Ramaccioti

Syntax

Viscosity [{of} SpeciesName] = Ramaccioti [Interpolated = interpolated | T_Liq = T_liq | T_Sol = T_sol | C = c | Mu_Liq = mu_liq]

Scope

Aria Material

Summary

A viscosity model used for corium melts

$\mu\left(T\right) = \mu_{liq} e^{2.5 C f_s},$

where $f_s = \min(\bar{f}_s,1)$ with $\bar{f}_s$ defined as

$\bar{f}_s=\begin{cases}\dfrac{T_{liq} - T}{T_{liq} - T_{sol}} & T < T_{liq} \\0 & T \geq T_{liq}, \end{cases}$

where $T$ is the temperature, $\mu_{liq}$ is the viscosity of the liquid, $T_{liq}$ is the liquidus temperature, $T_{sol}$ is the solidus temperature and $4 \leq C \leq 8$ is a model parameter.

Parameter	Value	Default
{of}	{of \| species \| subindex}	–
SpeciesName	string	–
interpolated	integer	0
T_liq	real	–
T_sol	real	–
c	real	–
mu_liq	real	–