Dynstall: Subroutine Package with a Dynamic stall model, FFAP-V-110

Titel: Dynstall: Subroutine Package with a Dynamic stall model, FFAP-V-110
Författare:
Anders Björck
Utgivare:
Flygtekniska Försöksanstalten
Årtal:
2000
Ämnesord:
Mekanik och aerodynamik
Sökord/keywords: dynamic stall, aerodynamic, Beddoes-Leishman, vindforsk.
Rapport (Pdf)


Sammanfattning/Abstract: A subroutine package, called DYNSTALL, for the calculation of 2D unsteady airfoil aerodynamics is described.

The subroutines are written in FORTRAN.

DYNSTALL is a basically an implementation of the Beddoes-Leishman dynamic stall model. This model is a semiempirical model for dynamic stall. It includes, however, also models for attached flow unsteady aerodynamics. It is complete in the sense that it treats attached flow as well as separated flow. Semi-empirical means that the model relies on empirically determined constants. Semi because the constants are constants in equations with some physical interpretation. It requires the input of 2D airfoil aerodynamic data via tables as function of angle of attack.

The method is intended for use in an aeroelastic code with the aerodynamics solved by blade/element method. DYNSTALL was written to work for any 2D angles of attack relative to the airfoil, e.g. flow from the rear of an airfoil.