Nonequilibrium Gas-Surface Interactions at High Temperature

Abstract

Hypersonic vehicles generate extreme conditions in the thin shock-layer next to the vehicle surface, in which gas temperatures can exceed 10,000K. This creates high heat fluxes that the thermal protection system (TPS) must withstand. Additionally, the TPS may lose mass due to chemical reactions with dissociated oxygen present in the high-temperature boundary layer. This process, called ablation, involves coupled gas-phase, gas-surface, and material response physics. Since no single ground experiment can fully reproduce flight conditions, computational fluid dynamics (CFD) modeling of ablation is crucial for vehicle design and survivability.

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Document Details

Document Type
Technical Report
Publication Date
Jul 07, 2020
Accession Number
AD1104383

Entities

People

  • Thomas Schwartzentruber

Organizations

  • University of Minnesota

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Boundary Layer
  • Carbon Fibers
  • Ceramic Materials
  • Chemical Reaction Properties
  • Chemical Reactions
  • Chemistry
  • Composite Materials
  • Computational Fluid Dynamics
  • Fluid Dynamics
  • Gas Flow
  • Graphitic Materials
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Silicon Carbide
  • Surface Chemistry
  • Test Facilities
  • Transition Temperature
  • Ultra-High-Temperature Ceramics

Fields of Study

  • Physics

Readers

  • Aerospace Engineering.
  • Combustion science or combustion engineering.
  • Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flight