Where 0.95 is a factor arbitrarily

Where 0.95 is a factor arbitrarily inserted to correct for the area occupied by the runner vanes.
In a specific design the precise value could be obtained.
The ratio B/D is a function of specific speed (Fig. 16.16).
The radial component of the velocity at entrance is V_r=C_r √2gh and Q = V_r A_c.
Since bp =