An application of cartesian-grid and volume-of-fluid methods to numerical ship hydrodynamics

Conference paper (2007)

Authors

Douglas G. Dommermuth Naval Hydrodynamics Division
Thomas T. O'Shea Naval Hydrodynamics Division
Donald C. Wyatt Naval Hydrodynamics Division
Toby Ratcliffe Carderock Division, Naval Surface Warfare Center
Gabriel D. Weymouth Massachusetts Institute of Technology
Kelli L. Hendrikson Massachusetts Institute of Technology
Dick K.P. Yue Massachusetts Institute of Technology
Mark Sussman Florida State University
Paul Adams U.S. Army Engineer Research and Development Center
Miguel Valenciano U.S. Army Engineer Research and Development Center
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Published Date

2007

Language

English

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Abstract

A combination of cartesian-grid methods and volume-offluid methods is used to simulate breaking waves around ships and the resulting hydrodynamic forces. A surface panelization of a ship hull is used as input to automatically generate an immersed-boundary representation of the geometry on a cartesian grid. No additional gridding beyond what is already used in potential-flow methods and hydrostatics calculations is required. The volumeof- fluid portion of the numerical algorithm is used to capture the free-surface interface, including the breaking of waves, the formation of spray, and the entrainment of air. The numerical scheme is implemented on a parallel computer. The numerical simulations are compared to analytical solutions and experimental measurements. Together, the ease of input and usage, the ability to model and resolve complex free-surface phenomena, and the speed of the numerical algorithm provide a robust capability for simulating the free-surface disturbances near a ship.