Index

Value/Equation

Description of variables

Compactness

coefficient (Kc)

K c = 0.28 × P A = 0.28 × 66.053 190.823 = 1.34

Compactness coefficient (Kc) is the association between the perimeter (P) of the basin and the circumference of a circle presenting area equal to the basin ( A ).

Shape factor (Kf)

K f = A L 2 = 190.823 64 2 = 0.046

The shape factor (Kf) is the association between the mean width (A) and the axial length of the basin (L2).