Wake transition of a circular cylinder

Hongyi Jiang

Wake transition of a circular cylinder

Research output: Thesis › Doctoral Thesis

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Abstract

Three-dimensional wake transitions of an isolated circular cylinder, a circular cylinder with a near-wake wire disturbance, and a circular cylinder placed near to a moving wall are investigated using direct numerical simulation. The evolutions of the wake flow structures with time and the Reynolds number are examined, and corresponding variations in the flow three-dimensionality, vortex shedding frequency and hydrodynamic forces are investigated. The fundamental physical mechanisms responsible for the observed flow characteristics are also explored.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Cheng, Liang, Supervisor Draper, Scott, Supervisor An, Hongwei, Supervisor
Award date	6 Mar 2017
Publication status	Unpublished - 2017

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THESIS - DOCTOR OF PHILOSOPHY - JIANG Hongyi - 2017
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Cite this

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title = "Wake transition of a circular cylinder",

abstract = "Three-dimensional wake transitions of an isolated circular cylinder, a circular cylinder with a near-wake wire disturbance, and a circular cylinder placed near to a moving wall are investigated using direct numerical simulation. The evolutions of the wake flow structures with time and the Reynolds number are examined, and corresponding variations in the flow three-dimensionality, vortex shedding frequency and hydrodynamic forces are investigated. The fundamental physical mechanisms responsible for the observed flow characteristics are also explored.",

keywords = "Circular cylinder, Wake transition, Wake instability, Vortex structure, Hydrodynamic forces, Direct numerical simulation",

author = "Hongyi Jiang",

year = "2017",

language = "English",

school = "The University of Western Australia",

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TY - THES

T1 - Wake transition of a circular cylinder

AU - Jiang, Hongyi

PY - 2017

Y1 - 2017

N2 - Three-dimensional wake transitions of an isolated circular cylinder, a circular cylinder with a near-wake wire disturbance, and a circular cylinder placed near to a moving wall are investigated using direct numerical simulation. The evolutions of the wake flow structures with time and the Reynolds number are examined, and corresponding variations in the flow three-dimensionality, vortex shedding frequency and hydrodynamic forces are investigated. The fundamental physical mechanisms responsible for the observed flow characteristics are also explored.

AB - Three-dimensional wake transitions of an isolated circular cylinder, a circular cylinder with a near-wake wire disturbance, and a circular cylinder placed near to a moving wall are investigated using direct numerical simulation. The evolutions of the wake flow structures with time and the Reynolds number are examined, and corresponding variations in the flow three-dimensionality, vortex shedding frequency and hydrodynamic forces are investigated. The fundamental physical mechanisms responsible for the observed flow characteristics are also explored.

KW - Circular cylinder

KW - Wake transition

KW - Wake instability

KW - Vortex structure

KW - Hydrodynamic forces

KW - Direct numerical simulation

M3 - Doctoral Thesis

ER -

Wake transition of a circular cylinder

Abstract

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