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Three-dimensional viscous flow analysis of tip-sail effects on wing performance at low reynolds numbers

Steady, three-dimensional viscous numerical analysis of airflow over a rectangular NACA 0012 base wing (BW) with a rounded tip and with three NACA 0015 tip-sails (WTS) is performed. The flow physics and aerodynamic forces are studied at Reynolds numbers (Re) of 60,000 and 600,000, angles of attack (α) of 0, 5, 7.5, and 10°, and two sets of tip-sail dihedral angles (leading to trailing tip-sail): 50, 45, and 40° and 60, 45, and 30°. The Shear Stress Transport turbulence and intermittency-transition Reynolds number transitional turbulence models were used. For α > 0°, the WTS produced higher lift coefficients (CL) and drag coefficients (CD) than the BW. At Re = 600,000 and α > 0°, the CL/CD was higher for the WTS than the BW. Good agreement was seen with experimental data at Re = 600,000 for the BW results and the WTS CL but not the WTS CD. / October 2015

Identiferoai:union.ndltd.org:MANITOBA/oai:mspace.lib.umanitoba.ca:1993/30772
Date12 September 2015
CreatorsFerley, Dean
ContributorsOrmiston, Scott (Mechanical and Manufacturing Engineering) Derksen, Robert (Mechanical and Manufacturing Engineering), Chatoorgoon, Vijay (Mechanical and Manufacturing Engineering) Bridges, Greg (Electrical and Computer Engineering)
Source SetsUniversity of Manitoba Canada
Detected LanguageEnglish

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