The Eulerian Time Correlation Function in Homogeneous Isotropic Turbulence

Abstract

Two general models are proposed for the Eulerian time correlation function in homogeneous isotropic turbulence. The first is based on continued fraction approximations to its Laplace transform, and the second is based on random sweeping by a possibly non-Gaussian velocity field. Both models can give reasonable quantitative agreement with DNS data for moderate time separations over which the time correlation functions at different wave numbers exhibit a common self-similar form.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2002
Accession Number
ADA401480

Entities

People

  • Guowei He
  • R. Rubinstein

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Agreements
  • Classification
  • Computational Science
  • Contracts
  • Coordinate Systems
  • Databases
  • Energy Transfer
  • Equations
  • Fluid Dynamics
  • Fluid Mechanics
  • Information Science
  • Low Resolution
  • Mechanics
  • Momentum Transfer
  • Navier Stokes Equations
  • Space Sciences
  • Turbulence

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Computational Fluid Dynamics (CFD)
  • Statistical inference.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference
  • AI & ML - Machine Learning Algorithms