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On the extrication of large objects from the ocean bottom (the breakout phenomenon)

Published online by Cambridge University Press:  20 April 2006

Mostafa A. Foda
Mostafa A. Foda
Affiliation:
Parsons Laboratory, Department of Civil Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, U.S.A. Present address: E. & E.S. Division, Kuwait Institute for Scientific Research, P.O. Box no. 24885, Safat, Kuwait.
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Abstract

An analytical theory is developed to describe how negative pressure, (or ‘mud suction’, as it is sometimes referred to) develops underneath a body as it detaches itself from the ocean bottom. Biot's quasistatic equations of poro-elasticity are used to model the ocean bottom, and a general three-dimensional time-dependent analysis of the problem is worked out first using the boundary-layer approximation recently proposed by Mei and Foda. Then, explicit leading-order analytical solutions are presented for the problems of extrication of slender bodies as well as axisymmetric bodies from the ocean bottom.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 117 , April 1982 , pp. 211 - 231
Copyright
© 1982 Cambridge University Press

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