Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Mass flow rate nitrogen

  1. Jan 29, 2012 #1
    1. The problem statement, all variables and given/known data
    Nitrogen at a pressure of 100 psia and a temperature of 300 F flows through a circular pipe with a diameter of 6 inches. The velocity profile is parabolic with V= [1-(r/3)^2]
    where r is the local radius in inches and V is the velocity in ft/s. Determine the mass flow rate of nitrogen through the pipe.

    2. Relevant equations
    m = pVA

    3. The attempt at a solution

    I suppose this would be a steady flow. Then plug in r (3 inches) into V, get V=0. And mass flow rate is 0. Which makes sense because it's a steady flow. But this answer seems to be too trivial. So I must've screwed up somewhere. Any help would be appreciated. Thanks!
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?