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Resistive forces on a submarine?

  1. Apr 1, 2010 #1
    Lets say I was going to build a submarine, how could I determine most accurately the resistive forces as it is traveling in sea water at a constant velocity. I need to know how much energy it would consume per km. Cant find anything about this online..

    Thanks in advance!!
     
  2. jcsd
  3. Apr 1, 2010 #2

    mgb_phys

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    You would probably determine the frcition forces from the amount of energy (or rather power) it used at constant speed.

    If you were developing a submarine you would do CFD modelling in a computer or drag a model behind a boat with a force gauge - depending on how big a navy you are.
     
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