The Actuator Surface Model: A New Navier–Stokes Based Model for Rotor Computations
- 6 January 2009
- journal article
- Published by ASME International in Journal of Solar Energy Engineering
- Vol. 131 (1), 011002
- https://doi.org/10.1115/1.3027502
Abstract
This paper presents a new numerical technique for simulating two-dimensional wind turbine flow. The method, denoted as the 2D actuator surface technique, consists of a two-dimensional Navier–Stokes solver in which the pressure distribution is represented by body forces that are distributed along the chord of the airfoils. The distribution of body force is determined from a set of predefined functions that depend on angle of attack and airfoil shape. The predefined functions are curve fitted using pressure distributions obtained either from viscous-inviscid interactive codes or from full Navier–Stokes simulations. The actuator surface technique is evaluated by computing the two-dimensional flow past a NACA 0015 airfoil at a Reynolds number of 106 and an angle of attack of 10deg and by comparing the computed streamlines with the results from a traditional Reynolds-averaged Navier–Stokes computation. In the last part, the actuator surface technique is applied to compute the flow past a two-bladed vertical axis wind turbine equipped with NACA 0012 airfoils. Comparisons with experimental data show an encouraging performance of the method.Keywords
This publication has 15 references indexed in Scilit:
- Aero-Acoustic Modelling using Large Eddy SimulationJournal of Physics: Conference Series, 2007
- Actuator surface hybrid modelJournal of Physics: Conference Series, 2007
- Numerical Modeling of Wind Turbine WakesJournal of Fluids Engineering, 2002
- Navier–Stokes predictions of the NREL phase VI rotor in the NASA Ames 80 ft × 120 ft wind tunnelWind Energy, 2002
- Improved Rhie-Chow Interpolation for Unsteady Flow ComputationsAIAA Journal, 2001
- Modelling and analysis of the flow field around a coned rotorWind Energy, 2001
- Aerodynamic analysis of HAWTs operating in unsteady conditionsWind Energy, 2001
- Two-equation eddy-viscosity turbulence models for engineering applicationsAIAA Journal, 1994
- XFOIL: An Analysis and Design System for Low Reynolds Number AirfoilsPublished by Springer Science and Business Media LLC ,1989
- Airplane PropellersPublished by Springer Science and Business Media LLC ,1935