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Dissertation/Thesis Abstract

Effect of slot height variation on the aerodynamic performance of a circulation control airfoil: A CFD analysis
by Capobianco, Vincent J., M.S., California State University, Long Beach, 2017, 107; 10639011
Abstract (Summary)

Computational fluid dynamic (CFD) simulations were conducted on a known low aspect ratio wing design as well as four variant designs incorporating Coanda effect circulation control (CC) for lift generation. The U.S. Navy’s Kestrel code was employed to explore the relation of slot height and lip thickness to maximize lift augmentation. Reynolds Averaged Navier-Stokes calculations were performed at a Reynolds number of 2.1 million over wing configurations with a 1 ft span and chord with top slot flow blowing coefficients of 0, 0.005, 0.05, 0.1, and 0.15 over the angles of attack of 0°, 4°, 8°, 14°, and 18°. The computational results were compared to experimental measurements of slot unblown and blown configurations. General findings include higher lift augmentation ratios of modified designs with similar lip thickness and larger slot gap. Greater lift coefficients were found with larger lip thicknesses and smaller slot heights.

Indexing (document details)
Advisor: Shankar, Praveen
Commitee: Jiang, Minyee, Rahai, Hamid
School: California State University, Long Beach
Department: Mechanical and Aerospace Engineering
School Location: United States -- California
Source: MAI 57/01M(E), Masters Abstracts International
Subjects: Fluid mechanics, Computational physics, Aerospace engineering
Keywords: Circulation control, Coanda effect, Fluid mechanics
Publication Number: 10639011
ISBN: 978-0-355-49994-0
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