Recent content by InsideCenter

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    Finding flow rate with limited knowns

    Alright, I've think I'm on the right track with Poiseuille's Law. Q=[(p1-p2)(radius^4)]/[(8/pi)(viscosity)(length)] Change in pressure is 125psi radius is 0.5 inches viscosity is 1.4 poise (80w90 at 40 degrees C) length is 200 ft. I'm getting in the area of 16gpm. I expected much less. Can...
  2. I

    Finding flow rate with limited knowns

    It's a pneumatically powered diaphragm pump, not a gear pump. The cycle rate is not constant as it depends on the media being pumped. The more viscous the media, the slower the cycle time. Is there not a way to calculate flow rate without velocity?
  3. I

    Finding flow rate with limited knowns

    Hello all, My basic problem is I'm trying to figure out what flow rate a diaphragm pump can provide through a length of pipe. I know the pump's max pressure and all the details of the pipe and the fluid (80w-90 gear oil), but can I solve this without knowing the velocity? Is there a way to...
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