DNS Studies of Transitional Hypersonic Reacting Flows Over 3-D Hypersonic Vehicles

Abstract

The objectives of this research project are to develop CFD techniques and to conduct DNS studies of fundamental flow physics leading to boundary-layer instability and transition in hypersonic flows. During the three-period, we have conducted extensive DNS studies on the receptivity of a supersonic boundary layer over a blunt cone, and over both sharp and blunt leading edge; and on the receptivity of the Gortler vortices. DNS studies were also compared with Stetson's-l984 stability experiment on Mach 7.99 flow over a blunt cone. Our studies have led to new understanding of a number of hypersonic boundary layer receptivity mechanisms. Such understanding can lead to better tool for the prediction and control of high-speed boundary layer transition.

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Document Details

Document Type
Technical Report
Publication Date
Mar 05, 2003
Accession Number
ADA412861

Entities

People

  • Xiaolin Zhong

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Waves
  • Base Flow
  • Boundary Layer
  • Boundary Layer Control
  • Boundary Layer Flow
  • Computational Fluid Dynamics
  • Flow Fields
  • Fluid Dynamics
  • Fluid Mechanics
  • Hydrodynamics
  • Navier Stokes Equations
  • Reynolds Number
  • Steady Flow
  • Surface Roughness
  • Three Dimensional
  • Two Dimensional
  • Unsteady Flow

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers