An Algebraic Turbulence Model Modified for Extra Rates of Strain in an Axisymmetric Boundary Layer.

Abstract

A standard two-piece algebraic turbulence model is modified to account for transverse and longitudinal extra rates of strain which are important in the tail region of an axisymmetric boundary layer. The modified model contains one empirical constant which is determined with the aid of experimental data. For three bodies of revolution having different longitudinal curvature histories, boundary layer solutions with the modified and unmodified models are compared with detailed measurements. Incorporation of the two extra rates of strain is found to considerably improve agreement with the data in the tail region.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1982
Accession Number
ADA122232

Entities

People

  • G. H. Hoffman

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Differential Equations
  • Experimental Data
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Geometry
  • Measurement
  • Mechanical Properties
  • Pressure Distribution
  • Reynolds Number
  • Skin Friction
  • Turbulence
  • Turbulent Boundary Layer
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.