Date of Award

2011

Degree Type

Thesis

Degree Name

M.A.Sc.

Department

Mechanical, Automotive, and Materials Engineering

First Advisor

Ting, David (Mechanical, Automotive and Materials Engineering)

Keywords

Mechanical Engineering.

Rights

CC BY-NC-ND 4.0

Abstract

The effects of turbulence intensity (Tu = 0.5% to 10%), normalized integral length scale (f⌐/D = 0.56 to 1.28, where D is the diameter of the cylinder), and Reynolds number (6.7~103 ≲ Re ≲ 1.2~104) on the drag and lift force coefficients, CD and CL, of two staggered circular cylinders were experimentally investigated. The longitudinal and transverse spacing between the centres of two identical cylinders, L/D and T/D, were kept constant at 4 and 1, respectively. At Tu = 4%, increasing f⌐/D dramatically changes CD. However, the difference diminished when Tu ≳ 7%. f⌐/D = 0.56 has an insignificant effect on CL. Increasing Re has a negligible effect on the force coefficients. When f⌐/D ≲ 1, with increasing Tu from 4% to 7%, the CD increases and remains constant beyond 7%. When f⌐/D = 1.28, with increasing Tu from 4% to 7%, the CD decreases and remains constant beyond 7%.

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