KaydedilenlerDerginizi ekleyin

Dergiler / Marine Science and Technology Bulletin / 2022 / Cilt: 11 - Sayı: 1

On the Hydrodynamic Effects of the Eidonomy of the Hammerhead Shark’s Cephalofoil in the Eye Bulb Region: Winglet-Like Behaviour

Arash TAHERİ
Sayfa
41–51
DOI
—
🏛️Bu makalenin bibliyografik verileri ve tam metin bağlantısı DergiPark üzerinden sağlanmıştır.
DergiPark Kaydı ↗
✨

Yapay Zeka Hızlı Bakış & Çıkarımlar

AI Insight
⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

The results show that the strength (circulation) of the wing tip vortices reduces by the external geometry of the hammerhead’s cephalofoil tip; in this sense, ‘cephalofoil tip’ with its unique morphology behaves as a winglet.

📌 3 Maddede Bu Makale

🎯
Amaç & Hipotez:External morphology (eidonomy) of marine creatures, developed by the evolution process over the course of millions of years, plays a crucial role in their locomotion and swimming performance.
📊
Temel Bulgular & Veri:In this regard, two separate geometries are designed here; one corresponding to the real geometry of the hammerhead shark’s cephalofoil with a tip bump (eye bulb region) and another one, a modified version with a flat tip without the aforementioned bump.
💡
Sonuç & Katkı:The results show that the strength (circulation) of the wing tip vortices reduces by the external geometry of the hammerhead’s cephalofoil tip; in this sense, ‘cephalofoil tip’ with its unique morphology behaves as a winglet.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Cephalofoil · Hammerhead sharks · Bionic winglet

Abstract

External morphology (eidonomy) of marine creatures, developed by the evolution process over the course of millions of years, plays a crucial role in their locomotion and swimming performance. In this paper, hydrodynamic impacts of the cephalofoil tip eidonomy (tip bump) in the eye bulb region of a scalloped hammerhead shark, Sphyrna lewini, are studied with the aid of computational fluid dynamics (CFD). In this regard, two separate geometries are designed here; one corresponding to the real geometry of the hammerhead shark’s cephalofoil with a tip bump (eye bulb region) and another one, a modified version with a flat tip without the aforementioned bump. Turbulent flows encountered in the problem are simulated using the Lam-Bremhorst turbulence model at different angles of attack (AoA) and a sideslip angle, at high Reynolds number, 106, corresponding to the swimming of a juvenile hammerhead shark with a speed of 1 m/s. The results show that the strength (circulation) of the wing tip vortices reduces by the external geometry of the hammerhead’s cephalofoil tip; in this sense, ‘cephalofoil tip’ with its unique morphology behaves as a winglet.

🔖

Bu Makaleye Atıf Yap

TAHERİ, A. (2022). On the Hydrodynamic Effects of the Eidonomy of the Hammerhead Shark’s Cephalofoil in the Eye Bulb Region: Winglet-Like Behaviour. Marine Science and Technology Bulletin, Cilt: 11 - Sayı: 1, 41–51. https://ajindex.com/articles/413697

📄 Tam Metin PDF Okuyucu

📄

PDF görüntüleyici hazırlanıyor...

Kaynakça (11)

  1. Bang, K., Kim, J., Lee, S. I., & Choi, H. (2016). Hydrodynamic role of longitudinal dorsal ridges in a leatherback turtle swimming. Scientific Reports, 6, 34283. https://doi.org/10.1038/srep34283
  2. Battista, N. A. (2020). Swimming through parameter subspaces of a simple anguilliform swimmer. Integrative and Comparative Biology, 60(5), 1221–1235, https://doi.org/10.1093/icb/icaa130
  3. Borazjani, I. (2008). Numerical simulations of fluid-structure interaction problems in biological flows. [Ph.D. Thesis. University of Minnesota]. Chen, J. H., Li, S. S., & Nguyen, V. T. (2012). The effect of leading edge protuberances on the performance of small aspect ratio foils. Proceedings of the 15th International Symposium on Flow Visualization, Belarus, pp. 1-16.
  4. Copmpagno, L., Dando, M., & Fowler, S. (2005). Sharks of the world (1st ed.). Princeton University Press.
  5. Domel, A. G., Saadat, M., Weaver, J. C., Haj-Hariri, H., Bertoldi, K., & Lauder, G. V. (2018). Shark skin-inspired designs that improve aerodynamic performance. Journal of Royal Society Interface, 15, 1-9. https://doi.org/10.1098/rsif.2017.0828
  6. Fish, F. E., Schreiber, C. M., Moored, K. W., Liu, G., Dong, H., & Bart-Smith, H. (2016). Hydrodynamic performance of aquatic flapping: efficiency of underwater flight in the manta. Aerospace Journal, 3(20), 1-24. https://doi.org/10.3390/aerospace3030020
  7. Gaylord, M. K., Blades, E. L., & Parsons, G. R. (2020). A hydrodynamics assessment of the hammerhead shark cephalofoil. Scientific Reports, 10, 14495. https://doi.org/10.1038/s41598-020-71472-2
  8. Houghton, E. L., Carpenter, P. W., Collicott, S. H., & Valentine, D. T. (2015). Aerodynamics for Engineering Students (Seventh Edition). Elsevier Ltd. Publication. Kajiura, S. M., Forni, J. B., & Summers, A. P. (2003). Maneuvering in juvenile carcharhinid and sphyrnid sharks: the role of the hammerhead shark cephalofoil. Zoology, 106, 19–28. https://doi.org/10.1078/0944-2006-00086
  9. Kajiura, S. M., Forni, J. B., & Summers, A. P. (2005). Olfactory morphology of carcharhinid and sphyrnid sharks: Does the cephalofoil confer a sensory advantage?. Journal of Morphology, 264, 253-263. https://doi.org/10.1002/jmor.10208
  10. Ketchum, J. T., Hearn, A., Klimley, A. P., Espinoza, E., Peñaherrera, C., & Largier, J. L. (2014). Seasonal changes in movements and habitat preferences of the scalloped hammerhead shark (Sphyrna lewini) while refuging near an oceanic island. Marine Biology, 161, 755–767. https://doi.org/10.1007/s00227-013-2375-5
  11. Kuznar, Sh.