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Title: Development and Validation of a New Blade Element Momentum Skewed-Wake Model within AeroDyn: Preprint

Blade element momentum methods, though conceptually simple, are highly useful for analyzing wind turbines aerodynamics and are widely used in many design and analysis applications. A new version of AeroDyn is being developed to take advantage of new robust solution methodologies, conform to a new modularization framework for National Renewable Energy Laboratory's FAST, utilize advanced skewed-wake analysis methods, fix limitations with previous implementations, and to enable modeling of highly flexible and nonstraight blades. This paper reviews blade element momentum theory and several of the options available for analyzing skewed inflow. AeroDyn implementation details are described for the benefit of users and developers. These new options are compared to solutions from the previous version of AeroDyn and to experimental data. Finally, recommendations are given on how one might select from the various available solution approaches.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1166671
Report Number(s):
NREL/CP-5000-63217
DOE Contract Number:
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: To be presented at the AIAA Science and Technology Forum and Exposition 2015, 5-9 January 2015, Kissimmee, Florida
Research Org:
National Renewable Energy Laboratory (NREL), Golden, CO.
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy Wind Power Technologies Office
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY BLADE ELEMENT MOMENTUM; SKEWED WAKE; FAST; AERODYN; UNSTEADY AERODYNAMICS EXPERIEMENT (UAE); VALIDATION; Wind Energy