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Flow Through Orifice Discharging Freely Into The Air

orifice discharge coefficient fluid flow through orifice

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#1 MissK4


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Posted 14 January 2019 - 01:50 AM

Hi, I am currently doing an experiment of measuring the discharge flow rate through an orifice on the side of a tank that is discharging water freely into the air whilst the water level in the tank is kept constant. I also calculated the coefficient of discharge from the following equation; Q=Cd*a*√2gH. Initially the values I got for Cd are more than 1. How do I justify why the Cd values are more than 1 and why should it ideally be less than 1? Also, does anyone have any references from literature that I could check on the typical values for Cd for orifices discharging freely into the air? I need reliable sources that I can quote. Thank you

Edited by MissK4, 14 January 2019 - 01:54 AM.

#2 fallah


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Posted 14 January 2019 - 02:04 AM




Crane TP 410 is a good source for your query...

#3 breizh


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Posted 14 January 2019 - 03:29 AM



You should find pointers in the link above.


Good luck.


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