The marvel of shark-skin for fluid mechanics

Overview

About the speakers

Gianmarco D'Alessandro: Gianmarco earned his PhD from Queen's University where he worked as a graduate research assistant in Prof. Piomelli's group. Gianmarco then moved to Vietnam where he is a lecturer at RMIT university.

The marvel of sharks

Sharks have been around for millions of years, and if there is something that Nature does extremely well, is optimize its creature to thrive in their respective environment. Sharks are no exceptions: they have evolved to be incredible swimmers, fearless predators, and have developed on their skin something known as dermal denticles.

For over four decades scientists have tried to explain why shark-skin denticles have evolved to that particular geometry, and the reason might just be hydrodynamics. After a brief introduction, in the video we go over the following topics:

• Drag force in fluid mechanics.
• Shark skin Vs Riblets: differences and similarities.
• Shark skin for viscous drag reduction.
• Shark skin for form drag reduction.
• Shark skin inspired aerospace technologies.
• Impact of shark skin in aerospace.

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