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Loss of head at submerged discharge

  1. Apr 8, 2016 #1
    1. The problem statement, all variables and given/known data
    in the notes , author said that the velocity within it is negligible? does the author mean the water velocity in the tank ?
    so the velocity (v^2)/2g in the 4.24 means the velocity in the pipe ?

    2. Relevant equations


    3. The attempt at a solution
     

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  2. jcsd
  3. Apr 8, 2016 #2

    haruspex

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    Yes, the author means that the inflowing water effectively becomes stilled by the water in the tank.
    And yes, as the diagram shows, v is the inlet velocity.
     
  4. Apr 8, 2016 #3
    why the water will become ' stilled' ?
     
  5. Apr 8, 2016 #4

    haruspex

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    Water has some viscosity. It becomes mixed with the water in the tank, sharing its momentum.
     
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