Fast Algorithm Development for Large-Eddy Simulation of Circular-Jet Turbulence.

Abstract

The research addresses a single, free, round turbulent jet expanding into a quiescent environment, and deals with the large scale motions through large eddy simulation and the small scale motions through subgrid-scale turbulence modeling. The computational fluid dynamic investigation of the nearfield downstream of an axisymmetric nozzle is based on a two dimensional procedure involving a variable reduction method, with the farfield fully developed flow structure analyzed by matched asymptotic expansions for large Reynolds numbers. The numerical algorithm development examines vectorization, three dimensional flowfield, and the construction of weakly dissipative difference methods. Keywords: Asymptotic structure, Circular jet; Fair field development; Fast algorithm; Free jet; Large eddy simulation.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1987
Accession Number
ADA192044

Entities

People

  • C. A. Hall
  • L. Krishnamurthy
  • T. A. Porsching

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Boundary Layer
  • Classification
  • Computational Fluid Dynamics
  • Computations
  • Differential Equations
  • Equations
  • Fluid Dynamics
  • Fluid Flow
  • Large Eddy Simulation
  • Navier Stokes Equations
  • Pressure Distribution
  • Reynolds Number
  • Security
  • Three Dimensional
  • Turbulence
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.