An Integral Method for the Calculation of Boundary Layer Growth on a Ship Hull,

Abstract

An integral method for the calculation of boundary layers on ship hulls is presented. The method, based on the momentum integral equations and the entrainment equation, can be used with an arbitrary non-orthogonal coordinate system and allows for large crossflow angles. Either Coles' family of velocity profiles or power law profiles with Mager's crossflow assumption may be chosen to characterize the flow within the boundary layer. Comparison with experiment shows that the method performs well over the large portion of the hull where the boundary layer remains thin. Near the stern the momentum thickness is still well-predicted but the solutions suffer from the inability of the velocity profiles to predict reverse crossflow. Keywords: Canada; Numerical integration; Mathematical prediction; Turbulence; Three dimensional flow; Charts. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1985
Accession Number
ADA163220

Entities

People

  • David Hally

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Coordinate Systems
  • Equations
  • Flow
  • Integral Equations
  • Integrals
  • Layers
  • Momentum
  • Numerical Integration
  • Ship Hulls
  • Three Dimensional
  • Three Dimensional Flow

Readers

  • Computational Modeling and Simulation
  • Fluid Dynamics.
  • Marine Hydrodynamics