Transitional Zone Length And Simulation Of Discrete Roughness For Hypersonic Boundary Layers

Abstract

This final technical report summarizes activity on AFRL 6.1 laboratory task LRIR 15RQCOR102 for the last fiscal year of this activity, 2019. During this year, the transition zone length on the HIFiRE-5b flight was assessed and high-fidelity simulation of transition induced by discrete roughness in the presence of noise was executed. Results for HIFiRE-5b showed that the transition zone length was relatively short, generally less than the fully laminar length preceding transition. Transitional heating overshoot was observed on some parts of the vehicle. High-fidelity simulations of the HIFiRE cone were able to reproduce transition trends due to roughness and wind tunnel noise that were observed in ground test.

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Document Details

Document Type
Technical Report
Publication Date
Oct 31, 2019
Accession Number
AD1093305

Entities

People

  • Joseph S. Jewell
  • Matthew W. Tufts
  • Nicholas J. Bisek
  • Roger L. Kimmel
  • Thomas J. Juliano

Organizations

  • Air Force Research Laboratory
  • Purdue University
  • University of Notre Dame

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Heat Transfer
  • Hypervelocity Flow
  • Large Eddy Simulation
  • Military Research
  • Reliability
  • Reynolds Number
  • Turbulent Flow
  • Turbulent Mixing
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerospace Engineering.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers
  • Hypersonics - Hypersonic Flow