77th Annual Meeting of the APS Division of Fluid Dynamics (November 24, 2024 — November 26, 2024)

V2690524: Manu jumping: How to create large splashes in water

Authors
  • Pankaj Rohilla, Georgia Institute of technology
  • Daehyun Choi, Georgia Institute of Technology
  • Halley Wallace, Georgia Institute of technology
  • Kai Yung, Georgia Institute of Technology
  • Juhi Deora, Georgia Institute of technology
  • Atharva Lele, Georgia Institute of Technology
  • Saad Bhamla, Georgia Institute of Technology
DOI: https://doi.org/10.1103/APS.DFD.2024.GFM.V2690524

Manu jumping is a water jumping sport practiced by the Māori people of New Zealand. Participants aim to generate the largest splashes when they enter the water. The technique involves diving into the water in a V-shape and then pushing their head downward to create a large air cavity. As this air cavity collapses, it produces a distinctive splash known as a Worthington jet.Our study explores the fluid dynamics involved in Manu jumping by examining various solid shapes with different V-angles and using an active robot that mimics the underwater opening of the body to create larger air cavities. Our findings reveal that the size of the splash is influenced by several factors, including the impact speed, body shape, and the active dynamics of the body underwater.

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