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Designing a gravity-driven fluid flow system

  1. Nov 11, 2011 #1
    Basically, I'm designing a simple method in which a small reservoir of water is connected to a narrow pipe and the rate of flow of water changes with changing height of the reservoir.

    Now, the water coming out of the narrow pipe is fed into a microchannel.

    The resistance is given, by the makers as R (resistance) = 3x10^11 kg/m4s.

    1. First of all, what exactly is this quantity (i.e R), since I've never seen the units 'kg/m4s'

    2.After that, I obtained the formulae for head loss at entrance of pipe, at the bends etc using formulae given on

    http://books.google.co.in/books?id=...frontcover&source=gbs_atb#v=onepage&q&f=false

    Chapter 9....all in terms of outlet velocity.....so now how do I combine all these things to calculate how the flow through the narrow pipe depends upon the elevation of the reservoir, taking into consideration all these losses?
     
  2. jcsd
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