Date of Award

2011

Publication Type

Master Thesis

Degree Name

M.A.Sc.

Department

Mechanical, Automotive, and Materials Engineering

Supervisor

Ting, David (Mechanical, Automotive and Materials Engineering)

Keywords

Mechanical Engineering.

Rights

info:eu-repo/semantics/openAccess

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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