The Study of Drag Reduction on Ships Inspired by Simplified Shark Skin Imitation

Applied Bionics and Biomechanics
M D IbrahimA Zulkharnain

Abstract

The skin of a fast swimming shark reveals riblet structures that help reduce the shark's skin friction drag, enhancing its efficiency and speed while moving in the water. Inspired by the structure of the shark skin denticles, our team has carried out a study as an effort in improving the hydrodynamic design of marine vessels through hull design modification which was inspired by this riblet structure of shark skin denticle. Our study covers on macroscaled design modification. This is an attempt to propose an alternative for a better economical and practical modification to obtain a more optimum cruising characteristics for marine vessels. The models used for this study are constructed using computer-aided design (CAD) software, and computational fluid dynamic (CFD) simulations are then carried out to predict the effectiveness of the hydrodynamic effects of the biomimetic shark skins on those models. Interestingly, the numerical calculated results obtained show that the presence of biomimetic shark skin implemented on the vessels give about 3.75% reduction of drag coefficient as well as reducing up to 3.89% in drag force experienced by the vessels. Theoretically, as force drag can be reduced, it can lead to a more efficient vess...Continue Reading

References

Jun 7, 2000·Die Naturwissenschaften·D W BechertR Meyer
Sep 22, 2010·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Brian Dean, Bharat Bhushan
May 16, 2014·The Journal of Experimental Biology·Li WenGeorge V Lauder
Nov 19, 2015·Bioinspiration & Biomimetics·Li WenGeorge V Lauder

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ICEM CFD

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