Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14168
Title: A Study in Flow Past Triangular Cylinders with different Apex Angles
Authors: MIN MIN HTUN
Keywords: Triangular prism, apex angle, angle of incidence, angle of separation, afterbody shape, galloping stability.
Issue Date: 21-Jul-2004
Source: MIN MIN HTUN (2004-07-21). A Study in Flow Past Triangular Cylinders with different Apex Angles. ScholarBank@NUS Repository.
Abstract: In the present investigation the effects of the magnitude and the orientation of the apex angle as well as the angle of attack on the structure of the flow past a triangular cylinder were experimentally investigated in the wind tunnel. Four isosceles triangular prisms with apex angles of and , and with identical cross-stream and spanwise dimensions were used as the experimental models. With the above-mentioned models, investigation in which the flow separation angle (equals to half the apex angle) gradually increases (for cylinders with apex facing upstream), or the effects of the afterbody gradually reduce (for cylinders with apex facing downstream) were carried out systematically. The main consequences of varying the separation angle are the changes in the vortex formation length (and hence cylinder base pressure and drag force) and the circulation of the vortices shed. The reduction in afterbody shape mainly affects the proximity of the two separated shear layers to each other and to their corresponding side faces, and consequently the cylindera??s stability to transverse translational galloping oscillation.
URI: http://scholarbank.nus.edu.sg/handle/10635/14168
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
01 Cover Page.pdf46.59 kBAdobe PDF

OPEN

NoneView/Download
02 Acknowledgement.pdf148.14 kBAdobe PDF

OPEN

NoneView/Download
03 Chapter 1,2.pdf251.42 kBAdobe PDF

OPEN

NoneView/Download
04 Chapters 3,4,5.pdf329.66 kBAdobe PDF

OPEN

NoneView/Download
05 Pictures 1.pdf1.13 MBAdobe PDF

OPEN

NoneView/Download
06 Pictures 2.pdf707.95 kBAdobe PDF

OPEN

NoneView/Download

Page view(s)

457
checked on Dec 11, 2017

Download(s)

1,246
checked on Dec 11, 2017

Google ScholarTM

Check


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