A Numerical Wind Tunnel Study of Viscous-Inviscid Interaction

Abstract

Research results based on the Wilcox k-w and multiscale turbulence models aimed at analyzing viscous-inviscid interaction are presented. Surface boundary conditions for rough surfaces and for surface mass injection are developed and tested for the multiscale model. The multiscale model is also applied to three-dimensional ship-hull flows, flow over convex surfaces, and free shear flows. Both the k-w and multiscale models are applied to a variety of two-dimensional shock-separated flows using an extremely fast numerical algorithm. Results show that such computations can be routinely done on a fast desktop computer. Using perturbation methods, an alternative to wall functions is devised to circumvent integration through the viscous sublayer without significant loss of accuracy. Partially successful attempts at implementing the k-w and multiscale models in a three-dimensional time-averaged Navier-Stokes program are also described. Turbulence modeling, Computational fluid dynamics.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1992
Accession Number
ADA248429

Entities

People

  • David C. Wilcox

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Computers
  • Differential Equations
  • Energy Transfer
  • Equations Of Motion
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Hydrodynamics
  • Mechanics
  • Three Dimensional
  • Turbulent Flow
  • Turbulent Mixing
  • Viscous Flow

Fields of Study

  • Physics

Readers

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