HAWCStab2#

HAWCStab2 is an aero-servo-elastic tool for three bladed horizontal axis wind turbines. It allows steady-states computations and stability analysis. The tool is developed and maintained at the aeroelastic design section of the DTU Wind Energy department. For further information contact hawcstab2@windenergy.dtu.dk

Download the latest version#

HAWCStab2 2.16.0, AppImage (154.17 MB)
HAWCStab2 2.16.0, zip archive (158.04 MB)
HAWCStab2 2.16.0, Windows installer (99.41 MB)
HAWCStab2 2.16.0, zip archive (89.93 MB)
HAWCStab2 2.16.0, PDF Document (0.43 MB)

Archive of historical HAWCStab2 releases: HAWCStab2 Archive

Release notes

  • New features:

    • Support for the fully-populated stiffness matrix.

    • When using the fully-populated stiffness matrix, all components of the blade mode shapes are written see Table 3.8 in the user manual.

    • Updated the airfoil steady state aerodynamics, by adding pitch rate and added mass terms, as described in Li et al, 2022

    • Updated the rotor steady state aerodynamics, by correcting the induced velocities for blades that are not straight and not in the rotor plane, see Section 2.7 in the BEM implementation paper. These last two features improve the predictions for large cone angles and large deflections.

    • Added possibility of not reducing the degrees of freedom, as well as changing the amount of model reduction, see phi_per_node command, Section 2.2.12 in the user manual.

    • Read models with encrypted structural and/or aerodynamic data. In this case, some of the commands are disabled, see Section 2.2.13 in the user manual.

    • Added support for new license manager.

    • Output some aerodynamic matrices before the modal reduction when the save_ol_matrices_aero or save_ol_matrices_all command is used.

  • Bug fixes:

    • Inputs for dynamic stall and dynamic inflow are read from htc file (before the time constants and other parameters were hard coded).

    • Fixed a bug in the exported structural damping matrix.

    • Fixed potential stack overflow.

  • Changes:

    • HAWCStab2 and HAWC2S now use the latest version of HAWC2.

    • The tip loss correction is now coherent with HAWC2, see Section 2.3 in the BEM implementation paper

    • Added two extra columns to the pwr file, containing the blade tip torsion and the aerodynamic torque, see Section 3.4 in the user manual.

    • Modified column 29 in .ind file. Now it contains the projection of the total rotation on the pitch axis, see Section 3.5 in the user manual

    • Dynamic inflow modeling updated:

      • Time constants updated to match HAWC2 BEM implementation paper.

      • a-Ct table influences gradient of induced velocity with respect to Ct.