Free flow flow-rate for circular cross section pipes

The app returns the flov velocity and flow rate in a circular cross-section pipeline in free-flow conditions
Inclination
Filling rate
Flow data
Chézy formula
Bazin
Kutter
Gauckler-Strickler
Manning
Colebrook-Marchi

Pipe data

Nominal diameterDN(mm)
Internal diameterDi(mm)
Inclination (m/1000m)
% Filling rate (%)
Flow viscosityam(*10-6 m2/s)
    
Pipe internal radiusr(m)
Filling rateh/r( )
Inclinationi( )

Flow data

Wet areaA(m2)
Wet perimeterP(m)
Hydraulic radiusR=A/P(m)

Flow rates and speeds

   Roughness coefficientCoeff. condutt. c ( )Velocità v (m/s)Portata Q (m3/s)
Bazin (B)g(m1/2)
Kutter (K)m(m1/2)
Gauckler-Strickler (G-S)Ks(m1/3s-1)
Manning (M)n(m1/3s)
Colebrook-Marchi (C-M)e(mm)