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Trailed vorticity modeling for aeroelastic wind turbine simulations in stand still

Journal Article · · Journal of Physics. Conference Series
 [1];  [1];  [2]
  1. Technical Univ. of Denmark, Lyngby (Denmark). Wind Energy Dept.
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
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Current fast aeroelastic wind turbine codes suitable for certification lack an induction model for standstill conditions. A trailed vorticity model previously used as addition to a blade element momentum theory based aerodynamic model in normal operation has been extended to allow computing the induced velocities in standstill. The model is validated against analytical results for an elliptical wing in constant inflow and against stand still measurements from the NREL/NASA Phase VI unsteady experiment. The extended model obtains good results in case of the elliptical wing, but underpredicts the steady loading for the Phase VI blade in attached flow. The prediction of the dynamic force coefficient loops from the Phase VI experiment is improved by the trailed vorticity modeling in both attached flow and stall in most cases. The exception is the tangential force coefficient in stall, where the codes and measurements deviate and no clear improvement is visible.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1335580
Report Number(s):
NREL/JA--5000-67548
Journal Information:
Journal of Physics. Conference Series, Journal Name: Journal of Physics. Conference Series Journal Issue: C Vol. 753; ISSN 1742-6588
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (7)

A near wake model for trailing vorticity compared with the blade element momentum theory journal January 2004
A coupled near and far wake model for wind turbine aerodynamics journal March 2016
Computation of the National Renewable Energy Laboratory Phase-VI rotor in pitch motion during standstill: Computation of pitch motion during standstill journal August 2011
Detached-eddy simulation of flow around the NREL Phase VI blade: Detached-eddy Simulation journal April 2002
A high resolution tower shadow model for downwind wind turbines journal August 2001
Improvement of a near wake model for trailing vorticity journal December 2014
Comparison of a Coupled Near and Far Wake Model With a Free Wake Vortex Code posted_content May 2016

Cited By (4)

Investigation of shape memory alloy embedded wind turbine blades for the passive control of vibrations journal September 2018
Aeroelastic Stability of Idling Wind Turbines journal September 2016
Aeroelastic stability of idling wind turbines journal January 2017
Aeroelastic Stability of Idling Wind Turbines posted_content December 2016

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Related Subjects

17 WIND ENERGY
aerodynamics
simulation
wind turbine codes