The Laminar Velocity Profile in a Flat Plate Boundary Layer with Surface Roughness.

Abstract

The theory of Singh and lumley for the effect of surface roughness on a laminar boundary layer is applied to flow past a semi-infinite flat plate where the roughness is a randomly distributed small amplitude waviness characteristic of the manufacturing process. Distorted velocity profiles are calculated for a range of parameters and comparisons are made with results obtained by a phenomenological theory. Present results are nearly an order of magnitude smaller than those predicted by the phenomenological theory. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 11, 1977
Accession Number
ADA050198

Entities

People

  • G. H. Hoffman
  • J. L. Lumley

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Amplitude
  • Boundaries
  • Boundary Layer
  • Boundary Layer Transition
  • Computational Science
  • Equations Of Motion
  • Jet Propulsion
  • Laminar Boundary Layer
  • Layers
  • Manufacturing
  • Navy
  • Perturbation Theory
  • Perturbations
  • Roughness
  • Surface Roughness
  • Turbulent Boundary Layer
  • Universities

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Fluid Dynamics.