Wind Loads

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Wind Loads

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Theory

Vessel wind loads are calculated using:

                (1)

where:

,  and  are the wind coefficients in surge, sway and yaw respectively for an equivalent wind incidence of

 is the air density

 is the transverse area of the vessel which is exposed to wind action

is the longitudinal area of the vessel which is exposed to wind action

is the equivalent wind velocity

The equivalent wind incidence  is obtained using:

        (2)

where:

 is the (global) wind velocity

 is the wind direction as defined in the Wind and Current Directions figure.

The equivalent wind velocity  is given by:

               (3)

 

Relevant Keywords

*MOORED VESSEL is used to define a moored vessel and its associated properties. Specifically, the TYPE=GEOM inputs are used to specify vessel geometrical data such as draft, beam, length between perpendiculars etc.

*WIND is used to specify wind loading.

*WIND COEFF is used to specify wind coefficients used to determine the wind loading on a floating body or moored vessel.

If you would like to see an example of how these keywords are used in practice, refer to D01 - Moored Vessel