[case] TemperatureDependentFraction

Temperature dependent model for some volume or mass fraction

This property must be a medium property. It can be used for media with a phase change of the fluid in the pore space. Then, there is a temperature dependent (volume or mass) fraction for one of the two phases. The other one is immediately given by the remaining fraction. The fraction is computed based on a phase transition spread over a temperature interval following a sigmoid line:

\[ \frac{\phi}{1 + \exp(k(T - T_\mathrm{c}))} \]

Parameter \(k\) controlling the steepness of the phase change and \(T_\mathrm{c}\) as the characteristic temperature where the phase change is centered around (melting temperature) are forwarded to a sigmoid function.

Child parameters, attributes and cases

• [tag] characteristic_temperature
• [tag] steepness

Additional info

No additional info.

Used in the following test data files

Used in no end-to-end test cases.