DNS of Hypersonic Boundary Layer Stability and Transition Using High-Order Nonuniform-Grid Schemes

Abstract

High-order schemes are necessary for the DNS of stability and transition of hypersonic boundary layers because lower-order schemes do not have a sufficient accuracy level to compute small flow details. Currently, the main limiting factor in the application of high-order schemes is the numerical instability of high-order boundary closure schemes. In a previous AIAA paper (2001-0437), we presented a family of high-order nonuniform-grid finite-difference schemes with stable boundary closures for multi-dimensional flow simulations. In this paper, the high-order nominiform-grid schemes (up to 11th order) are applied to the numerical simulation of the receptivity of hypersonic boundary layers to freestream disturbances over a blunt leading edge. The stability and numerical accuracy of the new high-order nonuniform-grid schemes are evaluated for computing the nonlinear 2-D Navier-Stokes equations for hypersonic flow simulations.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADP013635

Entities

People

  • Xiaolin Zhong

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Acoustic Waves
  • Base Flow
  • Boundary Layer
  • Boundary Layer Flow
  • Bow Shock
  • Equations
  • Flow
  • Flow Fields
  • Fluid Dynamics
  • Free Stream
  • Frequency
  • Hypersonic Flow
  • Layers
  • Leading Edges
  • Navier Stokes Equations
  • Two Dimensional
  • Unsteady Flow

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers