Wave-Cavity Resonator: Experimental Investigation of an Alternative Energy Device

Simple item page
dc.contributor.authorReaume, Jonathan Daniel
dc.contributor.supervisorOshkai, Peter
dc.date.accessioned2015-12-21T17:34:02Z
dc.date.available2015-12-21T17:34:02Z
dc.date.copyright2015en_US
dc.date.issued2015-12-21
dc.degree.departmentDepartment of Mechanical Engineering
dc.degree.levelMaster of Applied Science M.A.Sc.en_US
dc.description.abstractA wave cavity resonator (WCR) is investigated to determine the suitability of the device as an energy harvester in rivers or tidal flows. The WCR consists of coupling between self-excited oscillations of turbulent flow of water in an open channel along the opening of a rectangular cavity and the standing gravity wave in the cavity. The device was investigated experimentally for a range of inflow velocities, cavity opening lengths, and characteristic depths of the water. Determining appropriate models and empirical relations for the system over a range of depths allows for accuracy when designing prototypes and tools for determining the suitability of a particular river or tidal flow as a potential WCR site. The performance of the system when coupled with a wave absorber/generator is also evaluated for a range piston strokes in reference to cavity wave height. Video recording of the oscillating free-surface inside the resonator cavity in conjunction with free-surface elevation measurements using a capacitive wave gauge provides representation of the resonant wave modes of the cavity as well as the degree of the flow-wave coupling in terms of the amplitude and the quality factor of the associated spectral peak. Moreover, application of digital particle image velocimetry (PIV) provides insight into the evolution of the vortical structures that form across the cavity opening. Coherent oscillations were attainable for a wide range of water depths. Variation of the water depth affected the degree of coupling between the shear layer oscillations and the gravity wave as well as the three-dimensionality of the flow structure. In terms of the power investigation, conducted with the addition of a load cell and linear table-driven piston, the device is likely limited to running low power instrumentation unless it can be up-scaled. Up-scaling of the system, while requiring additional design considerations, is not unreasonable; large-scale systems of resonant water waves and the generation of large scale vortical structures due to tidal or river flows are even observed naturally.en_US
dc.description.proquestcode0547en_US
dc.description.proquestcode0548en_US
dc.description.proquestemailreaumejd@uvic.caen_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/6960
dc.languageEnglisheng
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.5/ca/*
dc.subjectFlow-induced vibrationen_US
dc.subjectFlow-induced resonanceen_US
dc.subjectresonant couplingen_US
dc.subjectshear layer oscillationsen_US
dc.subjectfree surface waveen_US
dc.subjectstanding gravity waveen_US
dc.subjectWave-cavity resonatoren_US
dc.subjectWCRen_US
dc.subjectlock-onen_US
dc.subjectlarge-scale vortical structureen_US
dc.subjectfree shear layeren_US
dc.subjectAlternative energy deviceen_US
dc.subjectdesign of alternative energy deviceen_US
dc.subjectshallow flowsen_US
dc.subjectintermediate water waveen_US
dc.subjectdeep water waveen_US
dc.subjectwave absorberen_US
dc.titleWave-Cavity Resonator: Experimental Investigation of an Alternative Energy Deviceen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Reaume_Jonathan_MASc_2015.pdf
Size:
4.49 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.74 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Electronic Theses and Dissertations (ETD)
 
University of Victoria Libraries

We acknowledge and respect the Lək̓ʷəŋən (Songhees and Esquimalt) Peoples on whose territory the university stands, and the Lək̓ʷəŋən and W̱SÁNEĆ Peoples whose historical relationships with the land continue to this day.