The Initial Values node adds an initial value for the pressure that can serve as an initial condition for a transient simulation or as an initial guess for a nonlinear solver.
where ρ is the fluid density (SI unit: kg/m
3);
g denotes the acceleration of gravity (SI unit: m/s
2); and
D is the elevation (SI unit: m).
In case the Subsurface Flow Module is available, click the Pressure head button to enter a value or expression for
Hp (SI unit: m). The default is 0 m. Click the
Hydraulic head button to enter a value or expression for
H (SI unit: m). The default is 0 m.