A DNS Study on Hypersonic Boundary-Layer Receptivity and a New Transition Control Strategy by Surface Roughness

Abstract

In this report, our research accomplishments are summarized in the DNS study on hypersonic boundary-layer receptivity and a new transition control strategy by surface roughness: 1) DNS study and PSE/LST based theoretical analysis on the fundamental mechanisms of hypersonic boundary-layer instability and receptivity in the context of the relationship between synchronization points and surface roughness location, together with the effects of nose bluntness and thermo-chemical non-equilibrium; 2) a new transition control strategy using surface roughness; 3) a new set of very high-order upwind multilayer compact (MLC) schemes with spectral-like resolution for hypersonic flow simulations.

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Document Details

Document Type
Technical Report
Publication Date
Aug 23, 2019
Accession Number
AD1096360

Entities

People

  • Xiaolin Zhong

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Control
  • Boundary Layer Flow
  • Computational Fluid Dynamics
  • Computational Science
  • Convection
  • Differential Equations
  • Flow Fields
  • Fluid Dynamics
  • Gas Flow
  • Geometry
  • Hydrodynamics
  • Hypersonic Flow
  • Navier Stokes Equations
  • Surface Roughness
  • Turbulent Flow
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Immunology
  • Nanofabrication and Microfabrication.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers