CFD calculations of S809 aerodynamic characteristics
Abstract
Steady-state, two-dimensional CFD calculations were made for the S809 laminar-flow, wind-turbine airfoil using the commercial code CFD-ACE. Comparisons of the computed pressure and aerodynamic coefficients were made with wind tunnel data from the Delft University 1.8 m x 1.25 m low-turbulence wind tunnel. This work highlights two areas in CFD that require further investigation and development in order to enable accurate numerical simulations of flow about current generation wind-turbine airfoils: transition prediction and turbulence modeling. The results show that the laminar-to-turbulent transition point must be modeled correctly to get accurate simulations for attached flow. Calculations also show that the standard turbulence model used in most commercial CFD codes, the k-{epsilon} model, is not appropriate at angles of attack with flow separation.
- Authors:
-
- Sandia National Labs., Albuquerque, NM (United States)
- Iowa State Univ., Ames, IA (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- OSTI Identifier:
- 420410
- Report Number(s):
- SAND-96-2354C; CONF-970135-15
ON: DE96015309; TRN: 97:000741
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Conference
- Resource Relation:
- Conference: 16. American Society of Mechanical Engineers wind energy symposium, Reno, NV (United States), 6-9 Jan 1997; Other Information: PBD: 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 17 WIND ENERGY; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; AIRFOILS; C CODES; AERODYNAMICS; LAMINAR FLOW; TURBULENCE; WIND TURBINES; PRESSURE DEPENDENCE
Citation Formats
Wolfe, W P, and Ochs, S S. CFD calculations of S809 aerodynamic characteristics. United States: N. p., 1997.
Web.
Wolfe, W P, & Ochs, S S. CFD calculations of S809 aerodynamic characteristics. United States.
Wolfe, W P, and Ochs, S S. 1997.
"CFD calculations of S809 aerodynamic characteristics". United States. https://www.osti.gov/servlets/purl/420410.
@article{osti_420410,
title = {CFD calculations of S809 aerodynamic characteristics},
author = {Wolfe, W P and Ochs, S S},
abstractNote = {Steady-state, two-dimensional CFD calculations were made for the S809 laminar-flow, wind-turbine airfoil using the commercial code CFD-ACE. Comparisons of the computed pressure and aerodynamic coefficients were made with wind tunnel data from the Delft University 1.8 m x 1.25 m low-turbulence wind tunnel. This work highlights two areas in CFD that require further investigation and development in order to enable accurate numerical simulations of flow about current generation wind-turbine airfoils: transition prediction and turbulence modeling. The results show that the laminar-to-turbulent transition point must be modeled correctly to get accurate simulations for attached flow. Calculations also show that the standard turbulence model used in most commercial CFD codes, the k-{epsilon} model, is not appropriate at angles of attack with flow separation.},
doi = {},
url = {https://www.osti.gov/biblio/420410},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1997},
month = {Wed Jan 01 00:00:00 EST 1997}
}