Numerical Solution of Steady and Periodically Pulsed Two-Dimensional Turbulent Free Jets.

Abstract

The flow fields of a steady and a periodically pulsed two-dimensional turbulent free jet have been studied by solving the thin shear layer equations by the Keller Box method in transformed variable form. A constant eddy-viscosity formulation was used to model the Reynolds shear stress term. For the steady jet, calculations agree well with documented experimental data. Computed results of the unsteady jet indicate that the mean flow characteristics follow closely those of the steady jet and compare well with available experimental data. For sufficiently high frequency and amplitude of pulsation or at large streamwise distance, significant unsteady effects occur in the instantaneous quantities. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1980
Accession Number
ADA094614

Entities

People

  • J. M. Simmons
  • Joseph C. S. Lai

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • C4I

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Computers
  • Difference Equations
  • Differential Equations
  • Engineering
  • Equations Of Motion
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Partial Differential Equations
  • Reynolds Number
  • Three Dimensional
  • Turbulence
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Mechanics and Fluid Dynamics.