orifice plate storm detention
orifice plate storm detention
(OP)
I need to use a pipe to store a portion of the flow and design an opening that is less than the pipe diameter to reduce the flow. I have seen plates that are place above the springline that reduce the flow and I have seen circular orifices placed at the flow line.
DOES THE SHAPE NOT MATTER AS FAR AS THE EQUATIONS ARE CONCERNED OR DOES THE SHAPE OF THE ORIFICE REQUIRE DIFFERENT EQUATIONS?
The textbook equations seem to show only an example of the circular opening.
DOES THE SHAPE NOT MATTER AS FAR AS THE EQUATIONS ARE CONCERNED OR DOES THE SHAPE OF THE ORIFICE REQUIRE DIFFERENT EQUATIONS?
The textbook equations seem to show only an example of the circular opening.





RE: orifice plate storm detention
The edge effect is from the venia contracta (sp) which in corners gets compounded in 2 directions
Circles are also easy to cut with a hole saw, fly cutter, or punch
Hydrae
RE: orifice plate storm detention
RE: orifice plate storm detention
In fact very few studies have been done on low-head orifices in culverts in general. Assuming C = 0.6, and the point of reference for h being the centerline for low-head spillways is one of those things that have been so extensively used for such a long period of time, it has become fact with very little experimental back up.