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I was wondering if there is any equation that helps to calculate air velocity through a pipe? I cannot find anything although I did find that velocity of air (not in a pipe) can be found by:enter image description here

Is there anyway, however, to use this equation to find velocity of air in a pipe?

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closed as off-topic by Bernhard, Kyle Kanos, ACuriousMind, CuriousOne, Gert Mar 23 '16 at 1:51

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    $\begingroup$ duplicate of this question on Engineering... $\endgroup$ – nluigi Mar 22 '16 at 18:27
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    $\begingroup$ that is dealing with water i am dealing with air $\endgroup$ – user510 Mar 22 '16 at 18:32
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    $\begingroup$ the equations are the same for air and water, i.e. newtonian fluids in general $\endgroup$ – nluigi Mar 22 '16 at 19:07
  • $\begingroup$ no because air's velocity will depend on its temperature $\endgroup$ – user510 Mar 22 '16 at 22:05
  • $\begingroup$ The density of air is dependent on the temperature, the same with the density of water. Are you dealing with nonisothermal and compressible flows? If not then the equations are exactly the same except you use the density and viscosity of air instead of water. $\endgroup$ – nluigi Mar 22 '16 at 22:10