Performance evaluation of a humpback whale-inspired hydrofoil design applied to surfboard fins
2019 Marine Technology Society. The humpback whale flippers' leading-edge tubercles have received much attention since the 1990's. This paper covers computational fluid dynamics (CFD) analysis and field investigations used to evaluate the performance of a novel method ('Real Whale...
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ftunivwollongong:oai:ro.uow.edu.au:aiimpapers-5071 2023-05-15T16:35:56+02:00 Performance evaluation of a humpback whale-inspired hydrofoil design applied to surfboard fins Shormann, David in het Panhuis, Marc 2019-01-01T08:00:00Z https://ro.uow.edu.au/aiimpapers/4016 unknown Research Online https://ro.uow.edu.au/aiimpapers/4016 Australian Institute for Innovative Materials - Papers Engineering Physical Sciences and Mathematics presentation 2019 ftunivwollongong 2020-02-25T12:11:17Z 2019 Marine Technology Society. The humpback whale flippers' leading-edge tubercles have received much attention since the 1990's. This paper covers computational fluid dynamics (CFD) analysis and field investigations used to evaluate the performance of a novel method ('Real Whale', RW) for applying several of the humpback's passive flow control mechanisms, including tubercles, to surfboard fins. CFD analysis was performed at Reynolds numbers (Re) between 105 and 106. Applying the RW design to longboard fins resulted in increased overall lift to drag ratio, and reduction in Cd compared to a control (C) and tubercled (CT) design above 10° angle of attack (α). C1 and delayed stall were improved for RW above 20°α. High Re improvements were greater than low Re improvements. CFD images of wall shear stress revealed RW applications possibly have less potential to stall and cavitate, thereby improving control. Fieldwork involving surfing of 665 ocean waves (using GPS tracking systems coupled with 9-axis motion sensors), revealed that, compared to a standard longboard fin, the RW fin provided longer rides, and faster max and average speeds, especially in more powerful waves. Both field and CFD results suggest RW designs are more efficient, require less material to manufacture, and provide more control than hydrofoil shapes with straight leading edges or standard tubercled designs. Conference Object Humpback Whale University of Wollongong, Australia: Research Online |
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University of Wollongong, Australia: Research Online |
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Engineering Physical Sciences and Mathematics |
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Engineering Physical Sciences and Mathematics Shormann, David in het Panhuis, Marc Performance evaluation of a humpback whale-inspired hydrofoil design applied to surfboard fins |
topic_facet |
Engineering Physical Sciences and Mathematics |
description |
2019 Marine Technology Society. The humpback whale flippers' leading-edge tubercles have received much attention since the 1990's. This paper covers computational fluid dynamics (CFD) analysis and field investigations used to evaluate the performance of a novel method ('Real Whale', RW) for applying several of the humpback's passive flow control mechanisms, including tubercles, to surfboard fins. CFD analysis was performed at Reynolds numbers (Re) between 105 and 106. Applying the RW design to longboard fins resulted in increased overall lift to drag ratio, and reduction in Cd compared to a control (C) and tubercled (CT) design above 10° angle of attack (α). C1 and delayed stall were improved for RW above 20°α. High Re improvements were greater than low Re improvements. CFD images of wall shear stress revealed RW applications possibly have less potential to stall and cavitate, thereby improving control. Fieldwork involving surfing of 665 ocean waves (using GPS tracking systems coupled with 9-axis motion sensors), revealed that, compared to a standard longboard fin, the RW fin provided longer rides, and faster max and average speeds, especially in more powerful waves. Both field and CFD results suggest RW designs are more efficient, require less material to manufacture, and provide more control than hydrofoil shapes with straight leading edges or standard tubercled designs. |
format |
Conference Object |
author |
Shormann, David in het Panhuis, Marc |
author_facet |
Shormann, David in het Panhuis, Marc |
author_sort |
Shormann, David |
title |
Performance evaluation of a humpback whale-inspired hydrofoil design applied to surfboard fins |
title_short |
Performance evaluation of a humpback whale-inspired hydrofoil design applied to surfboard fins |
title_full |
Performance evaluation of a humpback whale-inspired hydrofoil design applied to surfboard fins |
title_fullStr |
Performance evaluation of a humpback whale-inspired hydrofoil design applied to surfboard fins |
title_full_unstemmed |
Performance evaluation of a humpback whale-inspired hydrofoil design applied to surfboard fins |
title_sort |
performance evaluation of a humpback whale-inspired hydrofoil design applied to surfboard fins |
publisher |
Research Online |
publishDate |
2019 |
url |
https://ro.uow.edu.au/aiimpapers/4016 |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_source |
Australian Institute for Innovative Materials - Papers |
op_relation |
https://ro.uow.edu.au/aiimpapers/4016 |
_version_ |
1766026254095482880 |