Numerical Experiments on Turbulent Mixing.

Abstract

In turbulent combustion, mixing by molecular transport is an essential process that is not well understood. Because mixing occurs on the smallest length and time scales it is difficult to study experimentally. Instead, we are starting a study based on the direct numerical simulation of turbulence, initially for a conserved passive scalar in homogeneous isotropic turbulence. The Eulerian velocity and scalar fields are calculated from the exact evolution equations, and both Eulerian and Lagrangian statistics are deduced from the computed fields. A particle tracking scheme, need to extract Lagrangian information, has been implemented and is undergoing testing. In addition, in order to study processes in stationary turbulence, a forcing algorithm has been developed and implemented, and is being tested.

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Document Details

Document Type
Technical Report
Publication Date
Jun 09, 1986
Accession Number
ADA174763

Entities

People

  • Stephen B. Pope

Organizations

  • Cornell University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Algorithms
  • Classification
  • Combustion
  • Data Science
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Mechanics
  • Particles
  • Reynolds Number
  • Security
  • Simulations
  • Stationary
  • Statistics
  • Turbulence
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Plasma Physics / Magnetohydrodynamics