Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Load case analysis for a resonant Wave Energy Converter
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Naval Systems.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

As we progress beyond the information age, there is a growing urgency towards sustainability. This word is synonymous with the way we produce energy and there is an awareness to gradually shift towards green energy production. Corpower Ocean aims at producing energy by utilizing the perpetual motion of ocean waves through the motion of small floating buoys. Unlike previous designs, this buoy utilizes the phenomenon of Resonance thus greatly enhancing the energy output.

In the thesis, the simulation model developed by Corpower Ocean to virtually describe the buoy in operation was validated. This was done by comparing forces obtained from buoy scale model experiments, simulation model and ORCAFELXTM software. After satisfactory validation was established, the shortcomings in the simulation model were identified. Next the simulation model was used to generate data for all sea states for a target site with given annual sea state distribution. This information was then used to predict ultimate loads, statistical loads, motions and equivalent load for a given fatigue life and loading cycles. The results obtained are then treated with a statistical tool called Variation Mode and Effect Analysis to quantify the uncertainty in design life prediction and estimate the factor of safety. The information will be used by the design team to develop the buoy design further. Finally the issue of survivability was addressed by checking buoy behavior in extreme waves in ORCAFLEXTM. Different survivability strategies were tested and videos were captured for identifying slack events and studying buoy behavior in Extreme conditions.

The work aims at validating a technology that is green from environmental and economic point of view.

Place, publisher, year, edition, pages
2015. , 209 p.
Series
TRITA-AVE, ISSN 1651-7660 ; 2015:88
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-185261OAI: oai:DiVA.org:kth-185261DiVA: diva2:919804
Examiners
Available from: 2016-04-18 Created: 2016-04-15 Last updated: 2016-04-18Bibliographically approved

Open Access in DiVA

fulltext(6044 kB)139 downloads
File information
File name FULLTEXT01.pdfFile size 6044 kBChecksum SHA-512
53211bdd2d56cb28d20c9818a3d54f40ae4ff95f4ea6b337e17fea671094480332db3ddf78579c61945601ccdbd19ce94aef01853e375f80c0c5440f6e67d0e7
Type fulltextMimetype application/pdf

By organisation
Naval Systems
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 139 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 128 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf