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Dimensional Analysis, Practical Problems

  • 11-10-2009 10:45pm
    #1
    iii Stevo iii
    Registered Users, Registered Users 2 Posts: 285 ✭✭


    Determining the dimensions for a Wave Tank.

    "In order to determine the tank and wave dimensions it is necessary to first carry out dimensional analysis."

    I have to mimic waves of avg height 3meters, seabed of depth 300m.

    The tank can be up to 5000cm x 50cm x 50cm.


    Ive never done Dimensional Analysis before.
    Where do I even start?


Comments

  • #2
    Turbulent Bill
    Registered Users, Registered Users 2 Posts: 1,638 ✭✭✭Turbulent Bill


    The basic idea is that you can simulate effects (fluid dynamics in this case) at scales different from reality by using ratios of flow parameters rather than absolute values. This is very handy (like in your case) where it would be impractical to do full-scale tests.

    I'd check what your expected to measure first, then check a standard fluid dynamics text to get the dimensional equivalents of these. Work your way backwards to the tank size.


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