TY - JOUR
T1 - Extended Glauert Tip Correction to Include Vortex Rollup Effects
AU - Maniaci, David
AU - Schmitz, Sven
N1 - Funding Information:
The authors would like to acknowledge Dr. Scott Schreck from the National Renewable Energy Laboratory (NREL) for providing measured data of the NREL Phase VI rotor. We are further indebted to Dr. Raymond Chow for his tireless efforts in providing OVERFLOW results of the NREL 5-MW turbine. It is the dedication and commitment of such great colleagues that made this work possible.
PY - 2016/10/3
Y1 - 2016/10/3
N2 - Wind turbine loads predictions by blade-element momentum theory using the standard tip-loss correction have been shown to over-predict loading near the blade tip in comparison to experimental data. This over-prediction is theorized to be due to the assumption of light rotor loading, inherent in the standard tip-loss correction model of Glauert. A higher- order free-wake method, WindDVE, is used to compute the rollup process of the trailing vortex sheets downstream of wind turbine blades. Results obtained serve an exact correction function to the Glauert tip correction used in blade-element momentum methods. It is found that accounting for the effects of tip vortex rollup within the Glauert tip correction indeed results in improved prediction of blade tip loads computed by blade-element momentum methods.
AB - Wind turbine loads predictions by blade-element momentum theory using the standard tip-loss correction have been shown to over-predict loading near the blade tip in comparison to experimental data. This over-prediction is theorized to be due to the assumption of light rotor loading, inherent in the standard tip-loss correction model of Glauert. A higher- order free-wake method, WindDVE, is used to compute the rollup process of the trailing vortex sheets downstream of wind turbine blades. Results obtained serve an exact correction function to the Glauert tip correction used in blade-element momentum methods. It is found that accounting for the effects of tip vortex rollup within the Glauert tip correction indeed results in improved prediction of blade tip loads computed by blade-element momentum methods.
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U2 - 10.1088/1742-6596/753/2/022051
DO - 10.1088/1742-6596/753/2/022051
M3 - Conference article
AN - SCOPUS:84995480620
SN - 1742-6588
VL - 753
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 2
M1 - 022051
T2 - Science of Making Torque from Wind, TORQUE 2016
Y2 - 5 October 2016 through 7 October 2016
ER -