Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/16967
Title: Flow field of oscillating wings
Authors: CHNG TAT LOON
Keywords: oscillating wing, insect flight, impulsively started, reduced frequency, unsteady flow, particle image velocimetry
Issue Date: 27-Oct-2005
Source: CHNG TAT LOON (2005-10-27). Flow field of oscillating wings. ScholarBank@NUS Repository.
Abstract: Particle Image Velocimetry is employed to study the effects of reduced frequency, angular amplitude and wing geometry on an impulsively started aerofoil. The forced sinusoidal oscillation is about a mid-chord, spanwise axis and at a Reynolds number of 1000, with amplitudes between 20A? to 60A?. For the fixed incidence cases, the flow field is one fairly similar to that of a bluff body, with the formation of a von Karman vortex street. The oscillatory cases suggest that the effective angle of attack profile, which is a function of both the reduced frequency and angular amplitude, is the dominant parameter that governs the flow. On a separate note, the effect of wing geometry is less pronounced and affects only the strength of the resulting vortices. Additional experiments conducted for the fixed incidence cases indicate that the flow field is fairly insensitive to changes in the Reynolds number within 1000.
URI: http://scholarbank.nus.edu.sg/handle/10635/16967
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
(Final Draft)Flow Field Of Oscillating Wings.pdf11.52 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

227
checked on Dec 11, 2017

Download(s)

170
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.