Hydrodynamics of a body moving over a mud layer - Part II: Added-mass and damping coefficients

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Abstract

A ship cross section undergoes periodic oscillations in a finite water layer, overlaying a mud layer. The upper fluid is considered to be inviscid, and the mud is modeled as a Newtonian liquid. The section contour is replaced by a distribution of wave sources with unknown strength, satisfying a corresponding boundary integral equation. Its kernel is expressed through a newly derived Green function. The numerical solution of the integral equation allows evaluation of the added-mass and damping coefficients. Specific computations pertaining to Lewis forms show a drastic dependence of the added-mass and damping coefficients on the mud thickness and density.

Original languageEnglish
Pages (from-to)39-45
Number of pages7
JournalJournal of Ship Research
Volume40
Issue number1
StatePublished - Mar 1996

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