OrcaFlex Manual - Orcina

Automation, Text Data Files
SelectedCurrent: Ebb
CurrentMethod: Power Law
CurrentSpeedAtSurface: 1.2
CurrentSpeedAtSeabed: 0.8
RefCurrentDirection: 180.0
# Now select the other current
SelectedCurrent: Flow
CurrentMethod: Power Law
CurrentSpeedAtSurface: 1.2
CurrentSpeedAtSeabed: 0.8
RefCurrentDirection: 0.0
# Set the active current
ActiveCurrent: Ebb
Vessel Type data
102
w
Simple vessel type data is set as for other type data mentioned above, by referencing the vessel type by name first:
Vessel Type1:
Length: 120
PenWidth: 3
Symmetry: XZ plane
Much vessel data applies to a draught which must also then be referenced by name:
Vessel Type1:
Draught1:
Mass: 7600
CentreOfGravity: [2.53, 0, -1.97]
To set data for displacement RAOs, wave load RAOs and wave drift QTFs you must also specify which type of RAO
the data applies to:
Vessel Type1:
Draught1:
DisplacementRAOs:
RAOOrigin: [2.53, 0, -1.97]
LoadRAOs:
RAOOriginY: -1.2
The RAO data is per direction, so the direction also needs to be selected using the
SelectedRAODirectionValue YAML identifier. This example sets the Yaw amplitude in the second row in the
Period table for directions 22.5 and 45 degree of the Wave drift RAOs:
BaseFile: BaseCase.yml
Vessel Type1:
Draught1:
WaveDrift:
SelectedRAODirectionValue: 22.5
RAOYawAmp[2]: 0.13
SelectedRAODirectionValue: 45
RAOYawAmp[2]: 0.18
To modify data in the frequency dependent added mass and damping matrices, the frequency or period needs to be
selected first, using the SelectedAddedMassAndDampingPeriodOrFrequency identifier, to access the
relevant tables. Data in the tables is accessed using index notation:
Vessel Type1:
Draught1:
SelectedAddedMassAndDampingPeriodOrFrequency: 5.5
AddedMassMatrixX[1]: 255
AddedMassMatrixY[2]: 249
AddedMassMatrixZ[1]: 136
DampingY[2]: 0.4
It is unlikely that you will want to change individual values in the RAO tables, however the Vessel, Draught and RAO
sections of the Text Data File are ideal candidates for using the IncludeFile identifier: