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*CURRENT

Purpose

To specify the current to be considered in the SHEAR7 analysis.

Theory

Refer to SHEAR7 Data Specification for further information on this feature. For more information, refer to the Shear7 User Guide which is available for download from the Shear7 Support web page.

Keyword Format

A block of lines defining the current profile to be used in the SHEAR7 block 3 data.

A line with three optional entries:

[PROBABILITY=Probability of Occurrence] [, ID=Profile ID][, OPTION=Specification Option]

 

A line repeated as often as necessary to define the current profile:

Elevation, Velocity

 

The Probability of Occurrence of the current profile is an annual probability which must be between 0.0 and 1.0. The default value is 1.0. In SHEAR7 this value is multiplied by the computed damage rate before it is given in the output file. The Profile ID is reported in the output file to help users with profile bookkeeping and is not used explicitly by the SHEAR7. The default value for Profile ID is 1. See the SHEAR7 User Manual for further information.

At least two points must be defined for a piecewise linear current. The Specification Option can be one of three options:

•ASCEND (the default): In term above the datum X=0.

•DESCEND: In terms of distance below the MWL.

•XL : In terms of x/L specification as used by SHEAR7.

Table Input

Current Probability

Elevation Specification

Depth Specification

x/l Specification