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*CMPOL, 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 coefficient for torsion moment (CMZ) induced by fluid velocity as a function of arc length and direction.

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 shown below

  Number of Angle_Values

  List_of_Angle_Values

  CurvedPosition_1 CMZ_at_Angle_1_1 ... CMZ_at_Angle_1_N 
  CurvedPosition_2 CMZ_at_Angle_2_1 ... CMZ_at_Angle_2_N 
  CurvedPosition_3 CMZ_at_Angle_3_1 ... CMZ_at_Angle_3_N 
  ...
  CurvedPosition_M CMZ_at_Angle_M_1 ... CMZ_at_Angle_M_N

Data file example:

  2                ! number of angles  
  25 90            ! list of angles  
  0     0.0   1.0  ! Curved_Absc_1/ CMZ at angle 1 / CMZ 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 moment coefficient CmZ using (ang_fs-ANG).