“Calculate the wind load in the direction of the incoming wind from 0° to 180° with an angle of 30°

Discussion in 'Hydrodynamics and Aerodynamics' started by sun, Nov 3, 2021.

  1. sun
    Joined: Sep 2018
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    Location: Hongkong

    sun Junior Member

    When calculating the action of wind or waves in different directions on offshore structures, why only calculate the "0°~180° load in the direction of the incoming wind or waves"? Why are all "30° angles as an interval"?
     
  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    The maximum force is the only value of interest. That is what the design loads are.
     
  3. sun
    Joined: Sep 2018
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    Location: Hongkong

    sun Junior Member

    I want to calculate the force on a structure. How to choose wind direction or wave direction? (10°、20°、30°......360°)?
     
  4. CT 249
    Joined: Dec 2004
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    Location: Sydney Australia

    CT 249 Senior Member

    What force and why?

    As Gonzo implies, this is not a simple question.
     
  5. sun
    Joined: Sep 2018
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    Location: Hongkong

    sun Junior Member


    A new marine structure.
     
  6. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    Unless you are one of the sea gods, you don't get to choose the direction/force of the wind and waves. You need to use observed values for your location.
     
  7. TANSL
    Joined: Sep 2011
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    TANSL Senior Member

    As in many other calculations, it is difficult to know a priori which is the worst circumstance. One must calculate several options to know which is the worst condition among the several possible ones.
     
  8. wet feet
    Joined: Nov 2004
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    wet feet Senior Member

    Surely you ought to calculate the loads that may be imposed from any direction.Failing to include all scenarios would be negligent.
     
    TANSL likes this.

  9. sun
    Joined: Sep 2018
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    Location: Hongkong

    sun Junior Member

    Thank you everyone for your valuable feedback.
     
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