Experimental Investigation of Vortex-Induced Vibrations using a Cyber-Physical System

Riches, Graham Paul

Experimental Investigation of Vortex-Induced Vibrations using a Cyber-Physical System

dc.contributor.advisor	Morton, Chris R.
dc.contributor.author	Riches, Graham Paul
dc.contributor.committeemember	Bauwens, Luc
dc.contributor.committeemember	Zhou, Qi
dc.contributor.committeemember	Wood, David H.
dc.date	2018-11
dc.date.accessioned	2018-09-20T20:43:06Z
dc.date.available	2018-09-20T20:43:06Z
dc.date.issued	2018-09-11
dc.description.abstract	The dynamic response and wake of a circular cylinder undergoing vortex-induced vibrations (VIV) is investigated experimentally using a cyber-physical force-feedback system and particle image velocimetry (PIV) measurements. The effects of the structural mass ratio and mass-damping on the VIV amplitude and frequency response are investigated at a constant Reynolds number by manipulating the structural mass, stiffness and damping in the cyber-physical system. The extent of amplitude modulations in VIV is investigated and a new metric is proposed to quantify the extent of amplitude modulations. A methodology for extracting relevant flow physics associated with coherent structures in the flow is presented for VIV data. Low-order models (LOM) are proposed to describe the dynamics of the wake in each of the VIV branches based on the evolution of the modal temporal coefficients obtained from the proper orthogonal decomposition (POD). The low-order modelling approach is re fined by including a phase-averaging term to better model cases where significant spatial oscillations of the velocity field occur.	en_US
dc.identifier.citation	Riches, G. P. (2018). Experimental Investigation of Vortex-Induced Vibrations using a Cyber-Physical System (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/32963	en_US
dc.identifier.doi	http://dx.doi.org/10.11575/PRISM/32963
dc.identifier.uri	http://hdl.handle.net/1880/107800
dc.language.iso	eng
dc.publisher.faculty	Graduate Studies
dc.publisher.faculty	Schulich School of Engineering
dc.publisher.institution	University of Calgary	en
dc.publisher.place	Calgary	en
dc.rights	University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject.classification	Engineering--Mechanical	en_US
dc.title	Experimental Investigation of Vortex-Induced Vibrations using a Cyber-Physical System
dc.type	master thesis
thesis.degree.discipline	Mechanical and Manufacturing Engineering
thesis.degree.grantor	University of Calgary
thesis.degree.name	Master of Science (MSc)
ucalgary.item.requestcopy	true