Main hypothesis:

The computer program Phatas, ”Program for Horizontal Axis wind Turbine Analysis and Simulation”,
is developed for the time-domain calculation of the dynamic behaviour and the corresponding
loads on a Horizontal Axis wind Turbine. Phatas calculates the dynamic response of a wind turbine that covers the structural dynamic deformation of the turbine structure, the unsteady aerodynamic loads on the blades and tower, and the interactions from an operational controller and a Supervisory controller. The mutual equilibrium between all these sub-models is obtained by performing each time step an iterative solution of the full non-linear set of coupled equations.
The program Phatas is developed as a tool under the design package FOCUS6, maintained by WMC. Within FOCUS6, the aerodynamic capabilities can be extended by linking Phatas to external calculation modules, such as the ECN Aeromodule.

References:

[1] Lindenburg C., “PHATAS Release ‘Jan-2014a’ User’s manual.” ECN-I--05-005, ECN Petten, 2005

[2] Lindenburg C. and J.G. Schepers, “PHATAS-IV AEROELASTIC MODELLING” ECN-CX-00-027, 2001

[3] Winkelaar D., “SWIFT - Program for Three-Dimensional Wind Simulation,” ECN-R–92-013, 2013.

[4] Peeringa J.M., “Current ROWS manual” ECN-X–12-059, ECN Petten, 2013.

[5] Peeringa J.M., “STREAM FUNCTION WAVE PROGRAM User's manual” ECN-C-05-028, 2005.

[6] Gueydon, S., K. Lindeburg, and J. Peeringa, “Coupling of PHATAS to aNySIM,” MARIN & ECN, Proposal no. 2.1, Sep. 2011.

[7] Marin, “ANYwiki.” https://wiki.marin.nl/index.php/ANYwiki Oct-2014.

Remarks:

A coupling with Marin aNySIM has been made for floating wind turbines. Please refer to aNySIM documentation or the aNySIM Wiki to learn more about the capabilities of aNySIM on hydrodynamic interaction and mooring lines.

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