Coherent Structure Modeling of Viscous Sublayer Turbulence for Incompressible Flow with Heat Transfer and for Compressible Flow.

Abstract

The general objective of the present research is to develop a Navier-Stokes computational model of the time-dependent dynamics and heat transfer in a compressible viscous sublayer. Specific objectives are to compute the variation of turbulent Prandtl number across the sublayer for fluids of different molecular Prandtl number, and for flows with streamwise pressure gradient. Various existing theories for turbulent Prandtl number near a wall are shown to differ greatly. An exact analytical solution for oscillating shear flow with heat transfer has been derived and used to test satisfactorily the accuracy of the numerical algorithms to be used in the equations of motion for the time-dependent, heat-conduction, and viscous terms. Most of the necessary programming to adapt the Pulliam-Steger code to viscous sublayer modeling has been completed, and some debugging has begun. Boundary conditions have been formulated for the first test case without heat transfer, and for the initial runs to be made with heat transfer. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1983
Accession Number
ADA126506

Entities

People

  • Dale K. Ota
  • Dean R. Chapman

Organizations

  • Stanford University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Compressible Flow
  • Computational Fluid Dynamics
  • Computer Programming
  • Differential Equations
  • Equations Of Motion
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Heat Transfer
  • Incompressible Flow
  • Large Eddy Simulation
  • Mechanical Properties
  • Navier Stokes Equations
  • Prandtl Number
  • Turbulent Flow
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.