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*Wind Coeff

Purpose

To specify wind coefficients used to determine the wind loading on a floating body or moored vessel.

Theory

Refer to Wind Loads and Wind Force Coefficients for further information on this feature.

Keyword Format

Floating Body

A block of data consisting of floating body name followed by a single line defining the name of an external file which contains wind coefficient data.

FLOATING BODY=Floating Body Name

FILE=File Name

File Name should include the entire path of the file including its extension. If a file name or any part of its path contains spaces then it should be enclosed in double quotation marks.

A block of data consisting of floating body name followed by a single line repeated as often as necessary to define the wind coefficients over a sufficiently large range of headings. The block itself may be repeated for different floating bodies.

FLOATING BODY=Floating Body Name

Floating Body/Wind Heading, Wind Coefficient in Surge, 

Wind Coefficient in Sway, Wind Coefficient in Yaw

 

Moored Vessel

A block of data consisting of a moored vessel tag line followed by a single line defining the name of an external file which contains wind coefficient data.

MOORED VESSEL

FILE=File Name

File Name should include the entire path of the file including its extension. If a file name or any part of its path contains spaces then it should be enclosed in double quotation marks.

A block of data consisting of a moored vessel tag line followed by a single line repeated as often as necessary to define the wind coefficients over a sufficiently large range of headings. Only one block is required, as a mooring analysis only contains one moored vessel.

MOORED VESSEL

Moored Vessel/Wind Heading, Wind Coefficient in Surge, 

Wind Coefficient in Sway, Wind Coefficient in Yaw

 

Table Input

Floating Body (External File)

Floating Body

Moored Vessel (External File)

Moored Vessel

Notes

(a)If the equivalent wind incidence does not exactly match one of the relative wind headings specified, Flexcom linearly interpolates between the nearest user-specified headings to find the relevant values of the wind coefficients.

(b)If the equivalent wind incidence is outside the range of user-specified headings, the wind coefficients are assumed to be zero. For this reason, it is recommended that you specify wind coefficients over a sufficiently large range of headings to ensure that wind coefficients are defined for any heading likely to arise in an analysis.

(c)The headings for the wind coefficients need not necessarily be specified in any particular order (ascending order is not necessary).