Numerical Analysis of Large Eddy Simulation

Abstract

We have focused upon the development and validation of finite element methods for LES of turbulent flows in settings in which interaction with (possibly geometrically complex) boundaries are important. New results are presented in Section 2 on closure and convolution on bounded domains. Similarly, new near wall models were required; our method for developing these is described and one from our work is presented in Section 3. The difficulties in closure and wall modelling suggest a second approach: direct simulation of large eddy motion. We give an extension of this approach to nonlinear, equilibrium flows - a step closer to turbulence for an approach not requiring wall models or closure models.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADP013653

Entities

People

  • A. Dunca
  • N. Sahin
  • V. John
  • W. J. Layton

Organizations

  • University of Pittsburgh

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Equations
  • Estimators
  • Euler Equations
  • Finite Element Analysis
  • Flow
  • Flow Fields
  • Large Eddy Simulation
  • Layers
  • Mathematical Analysis
  • Mathematics
  • Numerical Analysis
  • Simulations
  • Theorems
  • Turbulent Flow
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Fluid Mechanics and Fluid Dynamics.