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Title: Vertical Axis Wind Turbine

Abstract

Blade fatigue life is an important element in determining the economic viability of the Vertical-Axis Wind Turbine (VAWT). VAWT-SAL Vertical Axis Wind Turbine- Stochastic Aerodynamic Loads Ver 3.2 numerically simulates the stochastic (random0 aerodynamic loads of the Vertical-Axis Wind Turbine (VAWT) created by the atomspheric turbulence. The program takes into account the rotor geometry, operating conditions, and assumed turbulence properties.

Authors:
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
DOE OFFICE OF WIND AND GEOTHERMAL TECHNOLOGIES
OSTI Identifier:
1230546
Report Number(s):
VAWT-SAL Ver.3.2; 001391SOLAS00
DOE Contract Number:
DE-AC04-76DP09
Resource Type:
Software
Software Revision:
00
Software Package Number:
001391
Software Package Contents:
VAWT-SAL Directory; Media Directory; abstract; Instructions for Compiling, Linking and Running; Media includes source code, Sampe Problem Input and Output.
Software CPU:
SOLAS
Open Source:
No
Source Code Available:
Yes
Other Software Info:
Code cost approximately three FTE'S to develop between 1985 and 1991.
Related Software:
SWILT; Paul Veers SNL 6214; SLATEC Library.
Country of Publication:
United States

Citation Formats

Homicz, Greg. Vertical Axis Wind Turbine. Computer software. Vers. 00. DOE OFFICE OF WIND AND GEOTHERMAL TECHNOLOGIES. 1 Apr. 2002. Web.
Homicz, Greg. (2002, April 1). Vertical Axis Wind Turbine (Version 00) [Computer software].
Homicz, Greg. Vertical Axis Wind Turbine. Computer software. Version 00. April 1, 2002.
@misc{osti_1230546,
title = {Vertical Axis Wind Turbine, Version 00},
author = {Homicz, Greg},
abstractNote = {Blade fatigue life is an important element in determining the economic viability of the Vertical-Axis Wind Turbine (VAWT). VAWT-SAL Vertical Axis Wind Turbine- Stochastic Aerodynamic Loads Ver 3.2 numerically simulates the stochastic (random0 aerodynamic loads of the Vertical-Axis Wind Turbine (VAWT) created by the atomspheric turbulence. The program takes into account the rotor geometry, operating conditions, and assumed turbulence properties.},
doi = {},
year = 2002,
month = 4,
note =
}

Software:
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  • This article describes the development of the tallest and most powerful windmill of its kind in the U.S. Known as a Vertical Axis Wind Turbine (VAWT), the machine is meant for testing new concepts in vertical axis turbine design. As part of its overall testing program, the turbine will supply electricity to automated water pumps used in irrigation research at the Research Laboratory in Bushland, Texas. Excess power will go to the Southwestern Public Service Company for the area power system.
  • Previous theoretical work has examined turbulence at a point rotating in a vertical plane, as in a horizontal-axis wind turbine (HAWT). The present paper extends the theoretical model to apply to the vertical-axis wind turbine (VAWT). The model's results, as simulated by computer, are compared with corresponding results obtained by analyzing field data, confirming the model's usefulness. Finally, suggestions are made for future applications of the model.
  • The effects of upwind turbine wakes on the performance of a FloWind 17-m vertical-axis wind turbine (VAWT) were investigated through a series of field experiments conducted at the FloWind wind farm on Cameron Ridge, Tehachapi, California. From the field measurements, we derived the velocity and power/energy deficits under various turbine on/off configurations. Much information was provided to characterize the structure of VAWT wakes and to assess their effects on the performance of downwind turbines. A method to estimate the energy deficit was developed based on the measured power deficit and the wind speed distributions. This method may be adopted formore » other turbine types and sites. Recommendations are made for optimizing wind farm design and operations, as well as for wind energy management. 17 refs., 66 figs., 6 tabs.« less
  • Theoretical and experimental research efforts in evaluating an innovative concept for vertical axis wind turbines (VAWT) are described. The concept is that of using straight blades composed of circulation controlled airfoil sections. The theoretical analysis has been developed to determine the unsteady lift and moment characteristics of multiple-blade cross-flow wind turbines. To determine the drag data needed as input to the theoretical analysis, an outdoor test model VAWT has been constructed; design details, instrumentation, and calibration results are reported. Initial testing is with fixed pitch blades having cross-sections of conventional symmetrical airfoils. Costs of building the test model are included,more » as well as estimates for blades constructed with composite materials. These costs are compared with those of other types of wind turbines.« less
  • An indoor facility was developed for use in the aerodynamic testing of Darrieus wind turbine blades. A three-component internal strain gage balance was used to deduce lift, drag and moment coefficients of blades whose angle of attack, chord to radius ratio and Reynolds number can be systematically varied. The unusual flow field of this test environment necessitates unique downwash corrections for angle of attack and induced drag.

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