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High-speed impacts of slender bodies into non-smooth, complex fluids

Published online by Cambridge University Press:  19 December 2018

Ishan Sharma Open the ORCID record for Ishan Sharma [Opens in a new window]
Ishan Sharma*
Affiliation:
Mechanics & Applied Mathematics Group, Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, UP 208016, India
*
†Email address for correspondence: ishans@iitk.ac.in
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Abstract

We present a simple hydrodynamical model for the high-speed impact of slender bodies into frictional geomaterials such as soils and clays. We model these materials as non-smooth, complex fluids. Our model predicts the evolution of the impactor’s speed and the final penetration depth given the initial impact speed, and the material and geometric parameters of the impactor and the impacted material. As an application, we investigate the impact of deep-penetrating anchors into seabeds. Our theoretical predictions are found to match field and laboratory data very well.

JFM classification

Geophysical and Geological Flows: Coastal engineering Granular media: Granular media Non-Newtonian Flows: Plastic materials
Type
JFM Rapids
Information
Journal of Fluid Mechanics , Volume 861 , 25 February 2019 , R1
Copyright
© 2018 Cambridge University Press 

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