On the Prediction of Turbulent Secondary Flows

Abstract

The prediction of turbulent secondary flows with Reynolds stress models in circular pipes and non-circular ducts is reviewed. Turbulence-driven secondary flows in straight non-circular ducts are considered along with turbulent secondary flows in pipes and ducts that arise from curvature or a system rotation. The physical mechanisms that generate these different kinds of secondary flows are outlined and the level of turbulence closure required to properly compute each type is discussed in detail. Illustrative computations of a variety of different secondary flows obtained from two-equation turbulence models and second-order closures are provided to amplify these points. Secondary flows, Reynolds stress closures, K-E model, curvature and rotation.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1992
Accession Number
ADA257276

Entities

People

  • B. A. Younis
  • C. G. Speziale
  • R. M. So

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Channel Flow
  • Computational Fluid Dynamics
  • Computations
  • Curvature
  • Engineering
  • Equations
  • Experimental Data
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Mechanical Properties
  • Mechanics
  • Rotation
  • Secondary Flow
  • Stresses
  • Turbulence
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Structural Dynamics.
  • Theoretical Analysis.