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NONLINEAR AND LINEAR MOTIONS OF A RECTANGULAR BARGE IN A PERFECT FLUID

Raymond Cointe, Paul E. Geyer

Open publisher page 74 citations

Abstract

The motion of a rectangular barge in beam seas is studied within the framework of potential flow theory. A simulation technique based on the Mixed Eulerian-Lagrangian method is described. It allows the simulation of the flow and the resulting barge motions to be performed with either linear or fully nonlinear boundary conditions on the hull and on the free surface. Efficient artificial boundary conditions are implemented that allow nonlinear and linear simulations to be performed over a large number of wave periods. Results from linear frequency domain theories are recovered and nonlinear phenomena are presented.

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What this paper is about

The motion of a rectangular barge in beam seas is studied within the framework of potential flow theory. A simulation technique based on the Mixed Eulerian-Lagrangian method is described. It allows the simulation of the flow and the resulting barge motions to be performed with either linear or fully nonlinear boundary conditions on the hull and on the free surface. Efficient artificial boundary conditions are implemented that allow nonlinear and linear simulations to be performed over a large number of wave periods. Results from linear frequency domain theories are recovered and nonlinear phenomena are presented.

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Available abstract

The motion of a rectangular barge in beam seas is studied within the framework of potential flow theory. A simulation technique based on the Mixed Eulerian-Lagrangian method is described. It allows the simulation of the flow and the resulting barge motions to be performed with either linear or fully nonlinear boundary conditions on the hull and on the free surface. Efficient artificial boundary conditions are implemented that allow nonlinear and linear simulations to be performed over a large number of wave periods. Results from linear frequency domain theories are recovered and nonlinear phenomena are presented.

Key concepts: BARGE, Hull, Nonlinear system, Eulerian path, Potential flow, Mechanics, Flow (mathematics), Boundary (topology)

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