Note
College of Engineering and Computer Science
Member of
Contributors
Publisher
Florida Atlantic University
Date Issued
1987
Description
The phenomenon of flow-induced vibration is found in many
engineering systems. The fluid flow generates forces on the
structure that cause motion of the structure. In turn, the
structural motion changes the angle of attack between the flow and
the structure, hence the forces on the structure. Furthermore,
turbulence generally exists in a natural fluid flow; namely, the fluid
velocity contains a random part. Thus, the problem is formulated as
a nonlinear system under random excitations.
This thesis is focused on one type of motion known as
galloping. A mathematical model for the motion of an elastically
supported square cylinder in turbulent flow is developed. The
physical nonlinear equation is converted to ideal stochastic
differential equations of the Ito type using the stochastic averaging
method. The probability density for the motion amplitude and the
values for the most probable amplitudes are obtained for various
mean flow velocities and turbulence levels.
engineering systems. The fluid flow generates forces on the
structure that cause motion of the structure. In turn, the
structural motion changes the angle of attack between the flow and
the structure, hence the forces on the structure. Furthermore,
turbulence generally exists in a natural fluid flow; namely, the fluid
velocity contains a random part. Thus, the problem is formulated as
a nonlinear system under random excitations.
This thesis is focused on one type of motion known as
galloping. A mathematical model for the motion of an elastically
supported square cylinder in turbulent flow is developed. The
physical nonlinear equation is converted to ideal stochastic
differential equations of the Ito type using the stochastic averaging
method. The probability density for the motion amplitude and the
values for the most probable amplitudes are obtained for various
mean flow velocities and turbulence levels.
Language
Type
Form
Extent
69 p.
Subject (Topical)
Identifier
14361
Additional Information
College of Engineering and Computer Science
Thesis (M.S.E.)--Florida Atlantic University, 1987.
FAU Electronic Theses and Dissertations Collection
Date Backup
1987
Date Text
1987
Date Issued (EDTF)
1987
Extension
FAU
FAU
admin_unit="FAU01", ingest_id="ing1508", creator="staff:fcllz", creation_date="2007-07-19 02:30:14", modified_by="staff:fcllz", modification_date="2011-01-06 13:08:58"
IID
FADT14361
Issuance
monographic
Organizations
Attributed name: Florida Atlantic University
Attributed name: College of Engineering and Computer Science
Attributed name: Department of Ocean and Mechanical Engineering
Person Preferred Name
Li, Qiang
Graduate College
Physical Description
69 p.
application/pdf
Title Plain
GALLOPING OF AN ELASTICALLY SUPPORTED BLUFF BODY IN TURBULENT FLOW
Use and Reproduction
Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
http://rightsstatements.org/vocab/InC/1.0/
Origin Information
1987
monographic
Boca Raton, Fla.
Florida Atlantic University
Physical Location
Florida Atlantic University Libraries
Place
Boca Raton, Fla.
Sub Location
Digital Library
Title
GALLOPING OF AN ELASTICALLY SUPPORTED BLUFF BODY IN TURBULENT FLOW
Other Title Info
GALLOPING OF AN ELASTICALLY SUPPORTED BLUFF BODY IN TURBULENT FLOW