The interaction of three-dimensional vortex flows

dc.contributor.authorCooppan, Sambharthan
dc.date.accessioned2014-09-02T10:59:30Z
dc.date.available2014-09-02T10:59:30Z
dc.date.issued2014-09-02
dc.description.abstractThe interaction of three dimensional vortex ows was investigated through vortex shedding o a discontinuous edge. Two 90 edges (up and downstream edges) were separated by an o set. The size of the o set (5mm, 10mm and 20mm) and the Mach number (Mach 1.32, 1.42 and 1.6) were the key parameters investigated. Experi- mental images were taken and computational simulations were run; a close relation was found between the two. This enabled the three dimensional e ects of the ow to be studied and analysed. It was found, as the o set increased in size; the vortices shed o the up and downstream edges took a longer time to merge and the strength of the interaction was weaker. The vortex topology changed with a larger o set; the downstream vortex was thinner (in terms of cross sectional diameter), which is an indication of a change in denisty, than the rest of the vortex along the downstream di raction edge, adjacent to the o set. This particular feature was more prevalent at lower Mach numbers. The e ects of a higher Mach number were to increase the rate of dissipation of the vortices, lengthen the shear layer and make the vortex pro le elliptical.en_ZA
dc.identifier.urihttp://hdl.handle.net/10539/15359
dc.language.isoenen_ZA
dc.titleThe interaction of three-dimensional vortex flowsen_ZA
dc.typeThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
SambharthanCooppanDissertation.pdf
Size:
27.75 MB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Collections