Combined wave-current scale model testing at FloWave

As part of a global drive to produce renewable electricity, devices are being designed to harness energy from the waves and tidal currents. Physical scale model testing is an important part of the development process for this and other technologies. The FloWave Ocean Energy Research Facility at The...

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Bibliographic Details
Published in:Ocean Engineering
Main Author: Noble, Donald Ross
Other Authors: Bruce, Tom, Ingram, David, Engineering and Physical Sciences Research Council (EPSRC)
Format: Doctoral or Postdoctoral Thesis
Language:English
Published: The University of Edinburgh 2018
Subjects:
tank testing
wave-current
FloWave
Arctic
Online Access:http://hdl.handle.net/1842/31170
id ftunivedinburgh:oai:era.ed.ac.uk:1842/31170
record_format openpolar
institution Open Polar
collection Edinburgh Research Archive (ERA - University of Edinburgh)
op_collection_id ftunivedinburgh
language English
topic tank testing
wave-current
FloWave
spellingShingle tank testing
wave-current
FloWave
Noble, Donald Ross
Combined wave-current scale model testing at FloWave
topic_facet tank testing
wave-current
FloWave
description As part of a global drive to produce renewable electricity, devices are being designed to harness energy from the waves and tidal currents. Physical scale model testing is an important part of the development process for this and other technologies. The FloWave Ocean Energy Research Facility at The University of Edinburgh is designed to conduct these tests. Here it is possible to produce multi-directional waves combined with currents in the circular tank, re-creating the complexity of the ocean. The research was driven by commercial requirements of the facility, aiming to highlight what can be learnt from testing at scale with complex conditions in a controlled environment. To enable this, it was first necessary to extend the characterisation of this new facility. Wave generation and reflections were assessed in a previous project. In this work, flow measurements taken throughout the test volume of the tank, allowed spatial and temporal variations in the currents to be determined. Waves and currents interact in a complex manner, compounded by the method of reproducing them in a tank. The influence of currents on waves in the basin was assessed. This included cases with an oblique angle between them, on which little has been published. The other part of the project addressed issues to be considered when testing in a combined wave-current basin such as FloWave. • At many sites of interest for offshore renewable energy, waves are influenced by water depth. Implications of not scaling depth consistently were considered, and design diagrams produced to facilitate understanding and quantification of potential errors. • At FloWave, waves are generated in still water around the outside of the tank. A process was therefore developed and verified to produce the desired combined conditions in the central test area following their interaction with the current. • There is a wealth of published guidance on tank testing, for ships, offshore structures, and more recently renewable energy. This has been reviewed and suggestions ...
author2 Bruce, Tom
Ingram, David
Engineering and Physical Sciences Research Council (EPSRC)
format Doctoral or Postdoctoral Thesis
author Noble, Donald Ross
author_facet Noble, Donald Ross
author_sort Noble, Donald Ross
title Combined wave-current scale model testing at FloWave
title_short Combined wave-current scale model testing at FloWave
title_full Combined wave-current scale model testing at FloWave
title_fullStr Combined wave-current scale model testing at FloWave
title_full_unstemmed Combined wave-current scale model testing at FloWave
title_sort combined wave-current scale model testing at flowave
publisher The University of Edinburgh
publishDate 2018
url http://hdl.handle.net/1842/31170
genre Arctic
genre_facet Arctic
op_relation Draycott, S., Noble, D., Davey, T., Bruce, T., Ingram, D., Johanning, L., Smith, H., Day, A. and Kaklis, P. (2017), ‘Re-creation of site-specific multi-directional waves with non-collinear current’, Ocean Engineering 152, 391–403. doi:10.1016/j.oceaneng.2017.10.047.
Noble, D., Draycott, S., Ordonez Sanchez, S., Porter, K., Johnstone, C., Finch, S., Judge, F., Desmond, C., Santos Varela, B., Lopez Mendia, J., Darbinyan, D., Khalid, F., Johanning, L., Le Boulluec, M. and Schaap, A. (2018), D2.1 Test recommendations and gap analysis report, Technical report, MaRINET2.
Noble, D. R., Davey, T. A. D., Smith, H. C. M., Kaklis, P., Robinson, A. and Bruce, T. (2015), Spatial variation in currents generated in the FloWave Ocean Energy Research Facility, in ‘Proceedings of the 11th European Wave and Tidal Energy Conference (EWTEC2015)’, Nantes, France.
Noble, D. R., Draycott, S., Davey, T. A. D. and Bruce, T. (2017), ‘Design diagrams for wavelength discrepancy in tank testing with inconsistently scaled intermediate water depth’, International Journal of Marine Energy 18, 109–113. doi:10.1016/j.ijome.2017.04.001.
Noble, D. R., Draycott, S., Davey, T. A. D. and Bruce, T. (2017), Testing marine renewable energy devices in an advanced multi-directional combined wave-current environment, in ‘Proceedings of the ASME 36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2017)’, Vol. Volume 7B:, ASME, Trondheim, Norway, p. V07BT06A020. doi:10.1115/OMAE2017-62052.
Sutherland, D. R., Noble, D. R., Steynor, J., Davey, T. and Bruce, T. (2017), ‘Characterisation of current and turbulence in the FloWave Ocean Energy Research Facility’, Ocean Engineering 139, 103–115. doi:10.1016/j.oceaneng.2017.02.028.
http://hdl.handle.net/1842/31170
op_doi https://doi.org/10.1016/j.oceaneng.2017.10.04710.1016/j.ijome.2017.04.00110.1115/OMAE2017-6205210.1016/j.oceaneng.2017.02.028
container_title Ocean Engineering
container_volume 152
container_start_page 391
op_container_end_page 403
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spelling ftunivedinburgh:oai:era.ed.ac.uk:1842/31170 2024-06-09T07:42:39+00:00 Combined wave-current scale model testing at FloWave Noble, Donald Ross Bruce, Tom Ingram, David Engineering and Physical Sciences Research Council (EPSRC) 2018-07-04 application/pdf http://hdl.handle.net/1842/31170 en eng The University of Edinburgh Draycott, S., Noble, D., Davey, T., Bruce, T., Ingram, D., Johanning, L., Smith, H., Day, A. and Kaklis, P. (2017), ‘Re-creation of site-specific multi-directional waves with non-collinear current’, Ocean Engineering 152, 391–403. doi:10.1016/j.oceaneng.2017.10.047. Noble, D., Draycott, S., Ordonez Sanchez, S., Porter, K., Johnstone, C., Finch, S., Judge, F., Desmond, C., Santos Varela, B., Lopez Mendia, J., Darbinyan, D., Khalid, F., Johanning, L., Le Boulluec, M. and Schaap, A. (2018), D2.1 Test recommendations and gap analysis report, Technical report, MaRINET2. Noble, D. R., Davey, T. A. D., Smith, H. C. M., Kaklis, P., Robinson, A. and Bruce, T. (2015), Spatial variation in currents generated in the FloWave Ocean Energy Research Facility, in ‘Proceedings of the 11th European Wave and Tidal Energy Conference (EWTEC2015)’, Nantes, France. Noble, D. R., Draycott, S., Davey, T. A. D. and Bruce, T. (2017), ‘Design diagrams for wavelength discrepancy in tank testing with inconsistently scaled intermediate water depth’, International Journal of Marine Energy 18, 109–113. doi:10.1016/j.ijome.2017.04.001. Noble, D. R., Draycott, S., Davey, T. A. D. and Bruce, T. (2017), Testing marine renewable energy devices in an advanced multi-directional combined wave-current environment, in ‘Proceedings of the ASME 36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2017)’, Vol. Volume 7B:, ASME, Trondheim, Norway, p. V07BT06A020. doi:10.1115/OMAE2017-62052. Sutherland, D. R., Noble, D. R., Steynor, J., Davey, T. and Bruce, T. (2017), ‘Characterisation of current and turbulence in the FloWave Ocean Energy Research Facility’, Ocean Engineering 139, 103–115. doi:10.1016/j.oceaneng.2017.02.028. http://hdl.handle.net/1842/31170 tank testing wave-current FloWave Thesis or Dissertation Doctoral EngD Doctor of Engineering 2018 ftunivedinburgh https://doi.org/10.1016/j.oceaneng.2017.10.04710.1016/j.ijome.2017.04.00110.1115/OMAE2017-6205210.1016/j.oceaneng.2017.02.028 2024-05-10T03:12:17Z As part of a global drive to produce renewable electricity, devices are being designed to harness energy from the waves and tidal currents. Physical scale model testing is an important part of the development process for this and other technologies. The FloWave Ocean Energy Research Facility at The University of Edinburgh is designed to conduct these tests. Here it is possible to produce multi-directional waves combined with currents in the circular tank, re-creating the complexity of the ocean. The research was driven by commercial requirements of the facility, aiming to highlight what can be learnt from testing at scale with complex conditions in a controlled environment. To enable this, it was first necessary to extend the characterisation of this new facility. Wave generation and reflections were assessed in a previous project. In this work, flow measurements taken throughout the test volume of the tank, allowed spatial and temporal variations in the currents to be determined. Waves and currents interact in a complex manner, compounded by the method of reproducing them in a tank. The influence of currents on waves in the basin was assessed. This included cases with an oblique angle between them, on which little has been published. The other part of the project addressed issues to be considered when testing in a combined wave-current basin such as FloWave. • At many sites of interest for offshore renewable energy, waves are influenced by water depth. Implications of not scaling depth consistently were considered, and design diagrams produced to facilitate understanding and quantification of potential errors. • At FloWave, waves are generated in still water around the outside of the tank. A process was therefore developed and verified to produce the desired combined conditions in the central test area following their interaction with the current. • There is a wealth of published guidance on tank testing, for ships, offshore structures, and more recently renewable energy. This has been reviewed and suggestions ... Doctoral or Postdoctoral Thesis Arctic Edinburgh Research Archive (ERA - University of Edinburgh) Ocean Engineering 152 391 403

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