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Environment: Data for regular waves |
A regular wave is a single wave component defined by wave direction, height, and period. Wave height is measured from trough to crest, so is twice the amplitude.
The nonlinear wave theories implemented in OrcaFlex cannot account for time-varying currents, or those that vary with position. Each theory requires a constant current speed (in the wave direction) as input, which is what this data represents. This value is used in conjunction with the more general current profile to compute a broadly representative model of their combined kinematics. A value of '~' means to use the unramped current speed at the start of the simulation, at the point where vertical line through the current origin intersects the the mean water level. The current origin is the origin of the horizontal variation factor or current table, if either of these features are in use; otherwise, it is the same as OrcaFlex's global origin.
This data is relevant for Dean, Stokes' 5th and Cnoidal waves.
For the Dean wave theory, you can set the order of stream function to be used. For most waves the default value will suffice but, for nearly breaking waves, the method sometimes has problems converging. If this is the case then it may be worth experimenting with different values.