A Numerical Study Of Oscillating Sub-Boundary Layer Vortex Generators Application

Simple item page
dc.contributor.authorZulkefli, Nur Faraihan
dc.date.accessioned2018-08-03T01:21:18Z
dc.date.available2018-08-03T01:21:18Z
dc.date.issued2011-06
dc.description.abstractA numerical simulation for oscillating sub-boundary layer vortex generator (SBVG) with Co-rotating (Co) and Counter-Rotating (Co-R) configurations was carried out. The device was attached and tested on a flat plate with zero- pressure gradient condition. This three-dimensional (3D) simulation adopted a fully turbulent flow, having a Reynolds number of 1x106. The Reynolds-averaged Navier-Stokes (RANS) equations with the SST k- turbulence model were used to predict the flow field which employed hybrid mesh. The SBVG was oscillated in a sinusoidal motion between 180 and -180. The results show that the profile for Counter-Rotating (Co-R) SBVG was more dominant due to its strong vortices compared to co-rotating. A two-element high-lift configuration with oscillating SBVG attached at the leading edge of the flap was simulated based on the RANS equations with SST k- turbulence model. Four different reduced frequencies with Reynolds numbers of 8.4x105 were studied. The effect of oscillating SBVG motion in the range of 180 and -180 on aerodynamic coefficients was investigated. The results show that the vortex formation on the flap surface was almost invisible when the reduced frequency was increased. The oscillating SBVGs produce higher lift coefficient and drag coefficient, however the liftto- drag ratio was almost the same as the static SBVG.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/6149
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectA numerical simulation for oscillatingen_US
dc.subjectsub-boundary layer vortex generatoren_US
dc.titleA Numerical Study Of Oscillating Sub-Boundary Layer Vortex Generators Applicationen_US
dc.typeThesisen_US
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Pusat Pengajian Kejuruteraan Aeroangkasa - Tesis