Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Burst-and-coast swimming is not always energetically beneficial in fish (Hemigrammus bleheri)
Ashraf, I.; Van Wassenbergh, S.; Verma, S. (2021). Burst-and-coast swimming is not always energetically beneficial in fish (Hemigrammus bleheri). Bioinspiration & Biomimetics 16(1): 016002. https://hdl.handle.net/10.1088/1748-3190/abb521
In: Bioinspiration & Biomimetics. IOP PUBLISHING LTD: Bristol. ISSN 1748-3182; e-ISSN 1748-3190
|  |
| Trefwoorden |
Hemigrammus bleheri
Marien/Kust |
| Author keywords |
fish swimming; intermittent locomotion; burst and coast swimming; flow sensing; energy efficiency |
| Auteurs | | Top |
- Ashraf, I.
- Van Wassenbergh, S.
- Verma, S.
|
|
|
| Abstract |
Burst-and-coast swimming is an intermittent mode of locomotion used by various fish species. The intermittent gait has been associated with certain advantages such as stabilizing the visual field, improved sensing ability, and reduced energy expenditure. We investigate burst-coast swimming in rummy nose tetra fish (Hemigrammus bleheri) using a combination of experimental data and numerical simulations. The experiments were performed in a shallow water channel where the tetra fish swam against an imposed inflow. High speed video recordings of the fish were digitized to extract the undulatory kinematics at various swimming speeds. The kinematics data were then used in Navier–Stokes simulations to prescribe the undulatory motion for three-dimensional geometrical models of the fish. The resulting steady-state speeds of the simulated self-propelled swimmers agree well with the speeds observed experimentally. We examine the power requirements for various realistic swimming modes, which indicate that it is possible to use continuous swimming gaits that require considerably less mechanical energy than intermittent burst-coast modes at comparable speeds. The higher energetic cost of burst-coast swimming suggests that the primary purpose of intermittent swimming may not be to conserve energy, but it may instead be related to a combination of other functional aspects such as improved sensing and the likely existence of a minimum tail-beat frequency. Importantly, using sinusoidal traveling waves to generate intermittent and continuous kinematics, instead of using experiment-based kinematics, results in comparable power requirements for the two swimming modes. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
