An Additive Turbulent Decomposition of the Navier-Stokes Equations Implemented on Highly Parallel Computer Systems

Abstract

Progress is reported on a study of a new turbulence simulation technique based on unaveraged, additive decomposition of the Navier Stokes equations. The decomposition formalism provides a natural separation of the governing equations into large- and small-scale parts, with the small scale solved in local subdomains. The method thus exhibits a high degree of automatic parallelism, and in addition is well-suited for application of domain decomposition methods as part of the solution process. Results presented include validation of a 2-D version of the small-scale equations, initial studies associated with bifurcation of solutions to these equations, qualitative comparisons with data, and analysis of the additive turbulent decomposition in two dimensional, generalized coordinates.

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Document Details

Document Type
Technical Report
Publication Date
Aug 05, 1991
Accession Number
ADA240131

Entities

People

  • E. C. Hylin
  • J. M. Mcdonough
  • Matthew T. Chan
  • Tony F. Chan
  • Xiaolin Zhong
  • Yaping Yang

Organizations

  • University of Kentucky

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Algorithms
  • Chemical Reactions
  • Computational Fluid Dynamics
  • Computational Science
  • Computers
  • Decomposition
  • Differential Equations
  • Equations
  • Fluid Dynamics
  • Large Eddy Simulation
  • Mathematics
  • Navier Stokes Equations
  • Partial Differential Equations
  • Simulations
  • Turbulence
  • Two Dimensional

Readers

  • Calculus or Mathematical Analysis
  • Computational Fluid Dynamics (CFD)