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Singular pressure loss in a bend

  1. Dec 6, 2016 #1
    Hello everyone,

    I have difficulties estimating the singular pressure drop coefficient of a 90° bend of radius ratio 1.5, based on literature. For example, if I look at the Idel'Cik book, I find a value of 0.17. If I take a different reference: "TRW Fluid Designers Handbook", I get a coefficient of 0.6. If I take a look at a third reference: "Flow of fluids through valves, fittings, and pipe" (Crane), I get a different value (from a table not in function of radius / diameter but of the diameter...), and so on.
    I cannot figure out which reference I should use and why?
    Does anyone have an idea or an explanation why there are so many values?

    Thanks a lot
  2. jcsd
  3. Dec 11, 2016 #2
    Thanks for the thread! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post? The more details the better.
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