Heat transfer coefficient regulating refreezing of water in the high-flow domain.
|
Default |
Unit |
Symbol |
Equation |
Function |
|
1000 |
W/m°C |
αh |
Refreezing is made proportional to the temperature (below 0 °C) of the frozen soil and the inverse of the latent heat of melting. This parameter depends on the shape and the geometry of the pore structure and the interface between the ice and the liquid water in the soil in combination with the thermal properties of ice and liquid water. It has to be determined by calibration and no experience exists concerning appropriate values for different soil types.
The old default value of 1.E5 J/dayºC corresponds to 0.11 W/mºC if a compartment size of 0.1 m is considered.