CEAS Space Journal

, Volume 8, Issue 4, pp 229–236 | Cite as

Numerical and experimental analysis of spallation phenomena

  • Alexandre Martin
  • Sean C. C. Bailey
  • Francesco Panerai
  • Raghava S. C. Davuluri
  • Huaibao Zhang
  • Alexander R. Vazsonyi
  • Zachary S. Lippay
  • Nagi N. Mansour
  • Jennifer A. Inman
  • Brett F. Bathel
  • Scott C. Splinter
  • Paul M. Danehy
Original Paper

Abstract

The spallation phenomenon was studied through numerical analysis using a coupled Lagrangian particle tracking code and a hypersonic aerothermodynamics computational fluid dynamics solver. The results show that carbon emission from spalled particles results in a significant modification of the gas composition of the post-shock layer. Results from a test campaign at the NASA Langley HYMETS facility are presented. Using an automated image processing of short exposure images, two-dimensional velocity vectors of the spalled particles were calculated. In a 30-s test at 100 W/cm2 of cold-wall heat flux, more than 722 particles were detected, with an average velocity of 110 m/s.

Keywords

Ablation Spallation Arcjet Thermal protection system 

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Copyright information

© CEAS (outside the USA) 2016

Authors and Affiliations

  1. 1.University of KentuckyLexingtonUSA
  2. 2.NASA Ames Research CenterMoffett FieldUSA
  3. 3.NASA Langley Research CenterHamptonUSA

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