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Calculate Discharge Of An Orifice Outlet Control With Free Discharge:
 
Calculation:
Designer/Checker:
 
Input:
 

(Note: All input Metric units are converted to English units for the equations below and then the output English units are converted back to Metric)
 
Area of orifice (Ao - SF or m^2)
Water surface elevation at design volume (Es - ft or m)
Elevation of centroid of orifice opening (Eo - ft or m)
Orifice Coeficient (C)

Typical values for C:
Orifice - sharp edge: C = 4.9
Orifice - rounded: C = 7.9
Orifice - short tube: C = 6.4
Orifice - Borda: C = 4.1
   
   
   
Output:  
 
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Discharge, Q =
 
 
 
 
 



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