Navier-Stokes Simulation of Boundary-Layer Transition

Abstract

This Report describes the successful efforts to computationally model the receptivity of the laminar boundary layer on a semi-infinite flat plat with an elliptic leading edge by a spatial simulation. The compressible flow is simulated by solving the governing full Navier-Stokes equations in general curvilinear coordinates by a finite difference method. First, the steady basic- state solution is obtained in a transient approach using spatially varying time steps. Then, a small-amplitude acoustic disturbances of the freestream velocity are applied as unsteady boundary conditions, and the governing equations are solved time-accurately to evaluate the spatial and temporal developments of the perturbation leading to instability waves (Tollmien-Schlichting waves) in the boundary layer. The effect of leading type radius on receptivity is determined. (jhd)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1990
Accession Number
ADA226351

Entities

People

  • Helen L. Reed

Organizations

  • Arizona State University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Waves
  • Artificial Intelligence
  • Boundaries
  • Boundary Layer
  • Boundary Layer Transition
  • Computational Fluid Dynamics
  • Equations
  • Fluid Dynamics
  • Fluid Mechanics
  • Layers
  • Navier Stokes Equations
  • Physics Laboratories
  • Pressure Gradients
  • Steady Flow
  • Steady State
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.