An Application of Cartesian-Grid and Volume-of-Fluid Methods to Numerical Ship Hydrodynamics

Abstract

A combination of cartesian-grid methods and volume-of-fluid methods is used to simulate breaking waves around ships and the resulting hydrodynamics 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 volume-of-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.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2007
Accession Number
ADP023891

Entities

People

  • Dick K. Yue
  • Donald C. Wyatt
  • Douglas G. Dommermuth
  • Gabriel D Weymouth
  • Kelli L. Hendrikson
  • Mark Sussman
  • Miguel Valenciano
  • Paul Adams
  • Thomas T. O'shea
  • Toby Ratcliffe

Organizations

  • Leidos

Tags

DTIC Thesaurus Topics

  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Engineering
  • Equations
  • Flow
  • Fluid Flow
  • Free Stream
  • Frequency
  • Froude Number
  • Hydrodynamics
  • Measurement
  • Mechanical Engineering
  • Poisson Equation
  • Ship Hulls
  • Simulations
  • Stratified Fluids

Readers

  • Computational Fluid Dynamics (CFD)