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Homework Help: Fluid Dynamics

  1. Apr 25, 2010 #1
    1.Water flows in a horizontal pipe with variable radius and which produces no drag. At one point in the pipe where the radius is 5.0cm, the flow is noted as .75 m/s at a pressure of 250 N/m^2. a) What is the velocity at a point in the pipe where the pressure is 200 N/m^2? b) What is the radius of the pipe at this point?


    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Apr 25, 2010 #2
    Water flows in a horizontal pipe with variable radius and which produces no drag. At one point in the pipe where the radius is 5.0cm, the flow is noted as .75 m/s at a pressure of 250 N/m^2. a) What is the velocity at a point in the pipe where the pressure is 200 N/m^2? b) What is the radius of the pipe at this point?

    Bernoulli's for an incompressible fluid:

    [tex]P_1 + \frac{v^2_1}{2} = P_2 + \frac{v^2_2}{2}[/tex]

    [tex]A_1 v_1 = A_2 v_2[/tex]

    You can take over from here.
     
    Last edited: Apr 25, 2010
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