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Homework Help: Finding the pressure in a pipe?

  1. Jan 13, 2010 #1
    1. The problem statement, all variables and given/known data
    The 810 mile long alaskan pipeline has a capacity of 2.48e5 m^3/day of oil per day. Along most the pipeline the radius is 60cm. Find the pressure at a point where the pipe has a 30cm radius. Take the pressure in the section with radius 60cm to be 190kPa and the density of oil to be 800 kg/m^3. Assume laminar nonviscous flow. Answer in units kPa


    2. Relevant equations
    q= delta v/ delta t


    3. The attempt at a solution
    My final equation is Pi + [rho(q^2)]/2pi^2 * (1/Ri^4 * R^4).
    Is that correct?
     
  2. jcsd
  3. Jan 14, 2010 #2
    A quick way that you can check your equation is with the units.

    Does you equation produce a unit in kPa?

    Thanks
    Matt
     
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