Large Eddy Simulation of a Rib-Roughened Turbulent Channel Flow with Heat Transfer and Property Variations

Abstract

Turbulent channel flow with a rib-roughened wall has been computed with constant heating rate using large eddy simulation. An implicit, second order accurate finite volume scheme was used to solve the time dependent filtered set of equations to determine large eddies, while a dynamic subgrid-scale model was used to account for the subgrid scale effects. A dynamic Prandtl number was introduced to calculate subgrid scale heat transfer. The effects of strong heating on the rib-roughened wall were investigated and Nusselt numbers were computed and compared with experimental data. The instantaneous plots revealed the influence of turbulent heat transfer on velocity, temperature and vorticity in this particular geometry.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADP013691

Entities

People

  • Ning Meng
  • Richard H. Pletcher

Organizations

  • Iowa State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Channel Flow
  • Computational Fluid Dynamics
  • Equations
  • Experimental Data
  • Flow
  • Gas Turbines
  • Heat Flux
  • Heat Transfer
  • Large Eddy Simulation
  • Mechanical Engineering
  • Pressure Gradients
  • Regions
  • Reynolds Number
  • Scale Models
  • Simulations
  • Three Dimensional
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.