Force and Moments on Asymmetric and Yawed Bodies in a Free Surface

Abstract

Thin bodies with a small degree of asymmetry are assumed to travel with a constant forward speed in the free surface of an infinitely deep ideal fluid. The boundary-value problem for the velocity potential due to asymmetry is derived and its solution formulated in terms of Fredholm integral equations. A numerical scheme based on the finite-element method is developed and applied for two cases of length/draft ratios, namely 7 and 20, at different Froude numbers. Graphs of side force, added-resistance, heeling- and yawing-moment coefficients are presented as functions of Froude numbers.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1973
Accession Number
AD0762758

Entities

People

  • Nabil Abdel-hamid Daoud

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Asymmetry
  • Asymptotic Series
  • Boundary Value Problems
  • California
  • Computational Science
  • Coordinate Systems
  • Differential Equations
  • Equations
  • Finite Element Analysis
  • Fluid Mechanics
  • Froude Number
  • Integral Equations
  • Military Research
  • New York
  • Numerical Analysis
  • United States
  • Universities

Fields of Study

  • Mathematics

Readers

  • Calculus or Mathematical Analysis
  • Fluid Dynamics.
  • Marine Hydrodynamics