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Item Information   Holdings       More by this author     Newbauer, Sam.     Subjects     Wind turbines     Turbines -- Blades     Turbines -- Aerodynamics     MSE Project.     Browse Catalog     by author:      Newbauer, Sam.       by title:      Computational analys...         MARC Display

Computational analysis of aerodynamic interaction of wind turbine rotor blades / by Sam Newbauer. by Newbauer, Sam. Subjects Wind turbines   Turbines -- Blades   Turbines -- Aerodynamics   MSE Project. Description:  63 leaves : ill. ; 29 cm. Contents:  Thesis advisor: Dr. Subha Kumpaty. Committee members: Dr. Christopher Damm, Stephen Rather. Introduction, literature review, justification, and background -- Modeling -- Results -- Discussion -- Conclusion -- References -- Bibliography. Generally, wind turbines have been constructed with three blades. Analysis in 1975 showed that as the number of blades increases, the power of extraction of wind turbines approaches the Betz limit. The increase in power extraction lessens as the blade number increases (greater increase from one to two blades than from two to three blades). The analysis assumed an ideal blade (zero drag) and no interaction between the blades. This paper investigates those two effects using CFD. Analysis of a 2D airfoil (S809) is compared to a finite wing. The 3D aspect ratio losses are determined from those results. A stationary wind turbine model utilizing the analyzed 3D blades was then solved. The model was analyzed with varying the number of blades; the losses of blade interactions and drag effects were included in the efficiency of extracting the available power. The 2D and finite wing analyses agree with the previous research, that as the number of blades is increased, the power coefficient of the turbine increases. The turbine model results in the opposite effect: as the number of blades increases, the power coefficient decreases.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .N484 2012 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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