Structure-Based Turbulence Model

Abstract

During the period of this award, the basic structure-based model for rapid distortions of homogeneous turbulence was extended to deal with slow distortions and inhomogeneities. A computer program was written to study the extended model in various one-dimensional flows, including channel flows with frame rotation and transpiration. The model was in-stalled in NASA's INS2D code for generalized flow analysis. The rapid distortion versions of both codes were checked against the parent KR calculations. New insight into the structure of various inhomogeneous flows was obtained from calculations of our new structure tensors from the DNS database at NASA/Ames Research Center. This work has been submitted to the Journal of Fluid mechanics.

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Document Details

Document Type
Technical Report
Publication Date
Oct 30, 2000
Accession Number
ADA384731

Entities

People

  • William C. Reynolds

Organizations

  • Stanford University

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Channel Flow
  • Computational Fluid Dynamics
  • Computer Programs
  • Computers
  • Distortion
  • Engineering
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Mechanical Engineering
  • Mechanics
  • Physics
  • Propulsion Systems
  • Rotation
  • Turbulence

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Technical Research and Report Writing.