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Bulk velocity and center line velocity

  1. Nov 10, 2015 #1
    When using Bernoulli's equation and calculating Reynold's number which one do we use?
     
  2. jcsd
  3. Nov 10, 2015 #2

    BvU

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    You mean for the vevlocity ? Some context, please !
     
  4. Nov 10, 2015 #3
    Yes. Do we use the bulk velocity or center line velocity when using Bernoulli's equation and calculating Reynold's number?
     
  5. Nov 10, 2015 #4

    BvU

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    Bernoulli is for inviscid flow, so I would use the bulk velocity and exercise care when a low Re number comes out that indicates laminar flow !
    See the caveat here and keep an eye on the laminar flow result (Poiseuille)
     
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