Journal article 671 views
A blind test on floats in extreme waves using a transient potential flow model
Jack Hughes,
Alison Williams 
,
Ian Masters
,
Ian Masters
Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics, Volume: 173, Issue: 3, Pages: 132 - 143
Swansea University Authors:
Jack Hughes, Alison Williams , Ian Masters
Full text not available from this repository: check for access using links below.
DOI (Published version): 10.1680/jencm.19.00037
Abstract
Numerical modelling of wave–structure interactions is a cost-effective alternative to physical models in understanding of marine energy device system behaviours and performance, though it is important to establish the reliability of the numerical model first. In this paper, experimental studies in w...
| Published in: | Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics |
|---|---|
| ISSN: | 1755-0777 1755-0785 |
| Published: |
Thomas Telford Ltd.
2020
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa53948 |
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<?xml version="1.0"?><rfc1807><datestamp>2020-10-26T14:04:42.6345337</datestamp><bib-version>v2</bib-version><id>53948</id><entry>2020-04-15</entry><title>A blind test on floats in extreme waves using a transient potential flow model</title><swanseaauthors><author><sid>c9129292768c8ad5f3c36ac13156a579</sid><firstname>Jack</firstname><surname>Hughes</surname><name>Jack Hughes</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>cb1b1946eccac3bbf7592d6ab1c4d065</sid><ORCID>0000-0002-2494-1468</ORCID><firstname>Alison</firstname><surname>Williams</surname><name>Alison Williams</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>6fa19551092853928cde0e6d5fac48a1</sid><ORCID>0000-0001-7667-6670</ORCID><firstname>Ian</firstname><surname>Masters</surname><name>Ian Masters</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2020-04-15</date><deptcode>FGSEN</deptcode><abstract>Numerical modelling of wave–structure interactions is a cost-effective alternative to physical models in understanding of marine energy device system behaviours and performance, though it is important to establish the reliability of the numerical model first. In this paper, experimental studies in which two surface-piercing floating buoys were subject to a series of focused waves have been modelled using open-source wave energy converter time-domain dynamics modelling software, WEC-Sim. The results were obtained as a blind test, with no knowledge of the experimental data and have not been tuned to match the experiment. Hydrodynamic forces and buoy motions are modelled in the time domain based on the experimental wave elevations, using linear frequency-domain hydrodynamic coefficients estimated by boundary element method solver, Nemoh. Drag coefficients were calculated through computational fluid dynamics, but found to be insignificant. When compared with the experimental results, the WEC-Sim model shows excellent agreement in its prediction of some motions, but less favourable in others. It is thought that non-linear fluid–structure interactions apparent in the experimental data are missed in the WEC-Sim predictions, creating differences in the results. This research study demonstrates that a significant benefit of linear models is their low computational expense when compared to other methods.</abstract><type>Journal Article</type><journal>Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics</journal><volume>173</volume><journalNumber>3</journalNumber><paginationStart>132</paginationStart><paginationEnd>143</paginationEnd><publisher>Thomas Telford Ltd.</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>1755-0777</issnPrint><issnElectronic>1755-0785</issnElectronic><keywords>Hydraulics &amp; hydrodynamics; Fluid mechanics; Renewable energy</keywords><publishedDay>1</publishedDay><publishedMonth>9</publishedMonth><publishedYear>2020</publishedYear><publishedDate>2020-09-01</publishedDate><doi>10.1680/jencm.19.00037</doi><url/><notes/><college>COLLEGE NANME</college><department>Science and Engineering - Faculty</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>FGSEN</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2020-10-26T14:04:42.6345337</lastEdited><Created>2020-04-15T11:40:46.3622130</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering</level></path><authors><author><firstname>Jack</firstname><surname>Hughes</surname><order>1</order></author><author><firstname>Alison</firstname><surname>Williams</surname><orcid>0000-0002-2494-1468</orcid><order>2</order></author><author><firstname>Ian</firstname><surname>Masters</surname><orcid>0000-0001-7667-6670</orcid><order>3</order></author></authors><documents/><OutputDurs/></rfc1807> |
| spelling |
2020-10-26T14:04:42.6345337 v2 53948 2020-04-15 A blind test on floats in extreme waves using a transient potential flow model c9129292768c8ad5f3c36ac13156a579 Jack Hughes Jack Hughes true false cb1b1946eccac3bbf7592d6ab1c4d065 0000-0002-2494-1468 Alison Williams Alison Williams true false 6fa19551092853928cde0e6d5fac48a1 0000-0001-7667-6670 Ian Masters Ian Masters true false 2020-04-15 FGSEN Numerical modelling of wave–structure interactions is a cost-effective alternative to physical models in understanding of marine energy device system behaviours and performance, though it is important to establish the reliability of the numerical model first. In this paper, experimental studies in which two surface-piercing floating buoys were subject to a series of focused waves have been modelled using open-source wave energy converter time-domain dynamics modelling software, WEC-Sim. The results were obtained as a blind test, with no knowledge of the experimental data and have not been tuned to match the experiment. Hydrodynamic forces and buoy motions are modelled in the time domain based on the experimental wave elevations, using linear frequency-domain hydrodynamic coefficients estimated by boundary element method solver, Nemoh. Drag coefficients were calculated through computational fluid dynamics, but found to be insignificant. When compared with the experimental results, the WEC-Sim model shows excellent agreement in its prediction of some motions, but less favourable in others. It is thought that non-linear fluid–structure interactions apparent in the experimental data are missed in the WEC-Sim predictions, creating differences in the results. This research study demonstrates that a significant benefit of linear models is their low computational expense when compared to other methods. Journal Article Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics 173 3 132 143 Thomas Telford Ltd. 1755-0777 1755-0785 Hydraulics & hydrodynamics; Fluid mechanics; Renewable energy 1 9 2020 2020-09-01 10.1680/jencm.19.00037 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-10-26T14:04:42.6345337 2020-04-15T11:40:46.3622130 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Jack Hughes 1 Alison Williams 0000-0002-2494-1468 2 Ian Masters 0000-0001-7667-6670 3 |
| title |
A blind test on floats in extreme waves using a transient potential flow model |
| spellingShingle |
A blind test on floats in extreme waves using a transient potential flow model Jack Hughes Alison Williams Ian Masters |
| title_short |
A blind test on floats in extreme waves using a transient potential flow model |
| title_full |
A blind test on floats in extreme waves using a transient potential flow model |
| title_fullStr |
A blind test on floats in extreme waves using a transient potential flow model |
| title_full_unstemmed |
A blind test on floats in extreme waves using a transient potential flow model |
| title_sort |
A blind test on floats in extreme waves using a transient potential flow model |
| author_id_str_mv |
c9129292768c8ad5f3c36ac13156a579 cb1b1946eccac3bbf7592d6ab1c4d065 6fa19551092853928cde0e6d5fac48a1 |
| author_id_fullname_str_mv |
c9129292768c8ad5f3c36ac13156a579_***_Jack Hughes cb1b1946eccac3bbf7592d6ab1c4d065_***_Alison Williams 6fa19551092853928cde0e6d5fac48a1_***_Ian Masters |
| author |
Jack Hughes Alison Williams Ian Masters |
| author2 |
Jack Hughes Alison Williams Ian Masters |
| format |
Journal article |
| container_title |
Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics |
| container_volume |
173 |
| container_issue |
3 |
| container_start_page |
132 |
| publishDate |
2020 |
| institution |
Swansea University |
| issn |
1755-0777 1755-0785 |
| doi_str_mv |
10.1680/jencm.19.00037 |
| publisher |
Thomas Telford Ltd. |
| college_str |
Faculty of Science and Engineering |
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|
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facultyofscienceandengineering |
| hierarchy_top_title |
Faculty of Science and Engineering |
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facultyofscienceandengineering |
| hierarchy_parent_title |
Faculty of Science and Engineering |
| department_str |
School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering |
| document_store_str |
0 |
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| description |
Numerical modelling of wave–structure interactions is a cost-effective alternative to physical models in understanding of marine energy device system behaviours and performance, though it is important to establish the reliability of the numerical model first. In this paper, experimental studies in which two surface-piercing floating buoys were subject to a series of focused waves have been modelled using open-source wave energy converter time-domain dynamics modelling software, WEC-Sim. The results were obtained as a blind test, with no knowledge of the experimental data and have not been tuned to match the experiment. Hydrodynamic forces and buoy motions are modelled in the time domain based on the experimental wave elevations, using linear frequency-domain hydrodynamic coefficients estimated by boundary element method solver, Nemoh. Drag coefficients were calculated through computational fluid dynamics, but found to be insignificant. When compared with the experimental results, the WEC-Sim model shows excellent agreement in its prediction of some motions, but less favourable in others. It is thought that non-linear fluid–structure interactions apparent in the experimental data are missed in the WEC-Sim predictions, creating differences in the results. This research study demonstrates that a significant benefit of linear models is their low computational expense when compared to other methods. |
| published_date |
2020-09-01T04:07:12Z |
| _version_ |
1763753520061743104 |
| score |
11.013507 |