WIT Press


BEM Application To Nonlinear Free Surface Flow Problems In Ocean Engineering

Price

Free (open access)

Paper DOI

10.2495/BE960621

Volume

14

Pages

10

Published

1996

Size

767 kb

Author(s)

V. Schlegel & C. Haack

Abstract

This paper presents the authors main results of the BEM time-stepping ana- lysis of free surface flow and wave structure interaction in ocean engineering problems and ship hydrodynamics. Starting with propagating and breaking of nonlinear waves some energy and stability criteria are discussed. The in- fluence of space- and time-discretization is given by wave tank simulations. The comparison of BEM computations with measurements shows a most reliable CFL stability criterion, which allows a simple time-step control. Then two typical examples of the so-called 2|-D approach are shown in de- tail and compared to FEM results: The development of plunging breakers in front of a moving ship and the generation of bow waves. Introduction Due to free surface flow phen

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