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
| Identifer | oai:union.ndltd.org:MANITOBA/oai:mspace.lib.umanitoba.ca:1993/30772 |
| Date | 12 September 2015 |
| Creators | Ferley, Dean |
| Contributors | Ormiston, Scott (Mechanical and Manufacturing Engineering) Derksen, Robert (Mechanical and Manufacturing Engineering), Chatoorgoon, Vijay (Mechanical and Manufacturing Engineering) Bridges, Greg (Electrical and Computer Engineering) |
| Source Sets | University of Manitoba Canada |
| Detected Language | English |
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