Fanno Parameter Fanno Flow Formula

Equation for calculate fanno parameter fanno flow is,

4fL^* / D_h = ((1 - M²) / (γ * M²)) + ((γ + 1) / (2 * γ)) * ln[M² / ((2 / (γ + 1)) * (1 + ((γ - 1) / 2) * M²))]

Where,
4fL^* / D_h = Fanno Parameter
f = Fanning Friction Factor
L^* = Length of the Duct
D_h = Hydraulic Diameter
M = Mach Number
γ = Heat Capacity Ratio