Deterministic and stochastic modeling of the water entry and descent of three-dimensional cylindrical bodies

An effective physics-based model has been developed that is capable of reliably predicting the motion of a three-dimensional mine-shaped object impacting the water surface from air and subsequently dropping through the water toward the sea bottom. This deterministic model, MINE6D, accounts for six-degree-of-freedom motions of the body. MINE6D allows for physics-based modeling of hydrodynamic effects due to water impact, viscous drag associated with flow separation and vortex shedding, air entrainment, and realistic flow environments. Unlike existing tools that are limited to plane motions only, MINE6D captures the myriad of complex three-dimensional motions of cylindrical mines observed in field and laboratory experiments. In particular, accounting for the three-dimensional viscous drag and air entrainment cavity produces an accurate prediction of the velocity, trajectory, and orientation of mines freely dropping in the water. The model development and effects on body motion are presented for both viscous drag and air entrainment cavities.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Ocean Engineering.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2005

Author dc:creator

• Mann, Jennifer L. (Jennifer Lynn)

Advisor dc:contributor.advisor

• Dick K.P. Yue.

• Ocean Engineering.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/33568

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/33568