symbol | explain |
K | Permeability coefficient |
H | Head of water |
W | Vertical flow per unit volume |
Ss | Elastic water release (storage) rate of porous media |
T | Time |
H0 (x, y, z) | The initial water head value of the aquifer in the simulation area |
H1 (x, y, z, t) | The actual measured water head values at the first boundary of each layer in the simulation area |
q (x, y, z, t) | The flow per unit area on the second boundary of each layer in the simulation area |
ε | Phreatic evaporation intensity |
ε0 | Evaporation of 20 mm diameter pan during the same period |
β | surface evaporation conversion coefficient, 0.55 |
λ | Submersible evaporation coefficient |