Pressure Loss Through Flattened Pipe End
Pressure Loss Through Flattened Pipe End
(OP)
How can I determine the pressure loss through an open pipe end where the end of the pipe is smashed? See attached for pictorial representation. Would this be best analyzed as an orifice?





RE: Pressure Loss Through Flattened Pipe End
I think what you want to do is calculate (or measure) the increase in backpressure from the nozzle, compared to an open pipe?
RE: Pressure Loss Through Flattened Pipe End
RE: Pressure Loss Through Flattened Pipe End
BUT! The nozzle bending will NOT be very uniform nor consistent unless you "machine out" the end after bending (squishing) the pipe. Most of the time, you will get a collapsed pipe end that is closed in the center, and rather more open (much larger than 1/8 inch!) at both ends.
Thus, completely squish the small pipe end completely closed. THEN, cut the irregular squished end to a uniform width and height so you get a uniform spray. And, of course, after testing proves you aren't getting enough fluid or too much fluid, then you simply change the regular, squared machined opening to be either higher, longer, or thinner or narrower.
RE: Pressure Loss Through Flattened Pipe End
RE: Pressure Loss Through Flattened Pipe End
RE: Pressure Loss Through Flattened Pipe End
RE: Pressure Loss Through Flattened Pipe End
Testing looks like a requirement to me.
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Also: There's usually a good reason why everyone does it that way