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*CLPOL, file=Filename

Data format:

One line with 2 parameters, as follows:

IGR ANG

Status:

Optional.

Restriction:

A group must have been previously defined.

Purpose:

To define a lift coefficient function of arc length and direction (in seawater).

Details :

Parameter	Description
IGR	Group number of the line.
ANG	Reference angle in degrees.
FILE=Filename	Path and name of the data file. The data file format is as follows: Number of Angle_Values List_of_Angle_Values

  Number of Angle_Values  
  List_of_Angle_Values  
  CurvedPosition_1  CL_at_Angle_1_1 ... CL_at_Angle_1_N  
  CurvedPosition_2  CL_at_Angle_2_1 ... CL_at_Angle_2_N  
  CurvedPosition_3  CL_at_Angle_3_1 ... CL_at_Angle_3_N  
  ...  
  CurvedPosition_M  CL_at_Angle_M_1 ... CL_at_Angle_M_N

Data file example:

  2             ! number of angles  
  25 90         ! list of angles  
  0 0.0   1.0   ! Curved_Absc_1/ CL at angle 1 / CL at angle 2  
  100   1.2   1.1  
  200   1.2   1.1  
  1000  1.2   1.1

Note

All angle values are in degrees. Note that the reference frame is the local vector (d1,d2) of each node where the drag is applied. The fluid- structure velocity direction (ang_fs)is evaluated in each location in the local frame. The angle is then used to interpolate the lift coefficient CL using (ang_fs-ANG).