*LFOPTION, NAME=STRUCTURE_NAME

Data format:

One line with 15 values

IWF IQTF IZ IDDL1 IDDL2 IDDL3 IDDL4 IDDL5 IDDL6 IK IDH ICH IVH ICO ICF

Status :

Optional

Purpose :

To define the parameters of a analysis taking into account the coupling analysis between the floater and the lines for the low frequency slow drift motion

Restriction :

The STRUCTURE_NAME must have been previously analyzed with a hydrodynamic software

Details :

Parameter	Description
STRUCTURE_NAME	name of one of the mechanical structure in the hydrodynamic analysis with DIODORE : 8 characters maximum without blank in the name
IWF	= 0 : Wave frequency motion (RAO) is not accounted for the body motion only LF loads is integrated in time = 1 :Wave frequency (RAO) and low frequency motions are superimposed
IQTF	= 0 : Newman theory is used = 1 : Full Quadratic Transfer Function are used for the Low frequencies load computations
IZ	= 0 : the vertical component of the mooring restoring force is not taken into account : the floating body is assumed to be at the equilibrium without the line/riser load in the vertical plane (roll/pitch and heave) 1 : the vertical component of the mooring restoring force is taken into account : a mean trim or heel angle can be exhibited.
IDDLi	= 1 : the slow drift waves loads is calculated for the ith degree of freedom of the floater = 0 : the slow drift wave loads is not taken into account
IDH	= 0 : Damping matrix stored in .HDB file is not used in the simulation. = 1 : Damping stiffness matrix stored in .HDB file is used in the simulation
ICH	= 0 : Current polar coefficients stored in .HDB file are not used in the simulation. ICH= 1 : Current polar coefficients stored in .HDB file are used in the simulation
IVH	= 0 : Wind polar coefficients stored in .HDB file are not used in the simulation. = 1 : Wind polar coefficients stored in .HDB file are used in the simulation.
ICF	= 0 : Low frequency calculations are performed separately on the floater and on the line at each time step. = 1 : Low frequency calculations are performed together on the floater and on the line at each time step. This option automatically put IWF=0.