Accession Number:

AD1104383

Title:

Nonequilibrium Gas-Surface Interactions at High Temperature

Descriptive Note:

Technical Report,15 Mar 2017,14 Mar 2020

Corporate Author:

THE UNIVERSITY OF MINNESOTA Minneapolis United States

Personal Author(s):

Report Date:

2020-07-07

Pagination or Media Count:

38.0

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.

Subject Categories:

  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE