Van Everdingen-Hurst Aquifer LAMBDA Functions — Petroleum Office

`PO.MBE.Aq.VEH.tD.SI`

Calculates dimensionless time for VEH aquifer, [dimensionless]. tD = 0.00634*k*t / (phi*muw*ct*rr^2) (SI units).

`PO.MBE.Aq.VEH.reD.SI`

Calculates dimensionless radius for VEH aquifer, [dimensionless]. reD = ra / rr (SI units).

`PO.MBE.Aq.VEH.U.SI`

Calculates aquifer constant for VEH model, [m3/kPa]. U = 1.119 * phi * ct * h * rr^2 * (theta/360) (SI units).