Index:

Discharge from a Tank

Input Data:

Discharge Coefficient =
Hole area = sq. ft.
Head on Tank = ft
Contraction Coefficient =
y Position = ft
x Position = ft
Results:

Velocity Coefficient =
Discharge = cfs
                     = gpm
Initial Velocity = ft/s
Head Loss = ft
x Position = ft
y Position = ft

Orifice Coefficients for Water

Description Cd  Cc  Cv 
sharp-edged  0.62  0.63  0.98 
round-edged 0.98  1.00  0.98 
short tube (fluid seperates from walls  0.61  1.00  0.61 
short tube (no seperation)  0.82  1.00  0.82 
short tube with rounded entrance  0.97  0.99  0.98 
reentrant tube, length is less than one-half of pipe diameter  0.54  0.55  0.99 
reentrant tube, length 2 to 3 pipe diameters  0.72  1.00  0.72 
smooth, well tapered nozzle  0.98  0.99  0.99