Experimental study and numerical analysis of unsteady pyrolysis gas motion inside of ablator

Toshiyuki Suzuki, Keisuke Sawada, Tetsuya Yamada, Yoshifumi Inatani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


The pyrolysis gas pressure and temperature inside of ablator pieces are measured in the arc-heated wind tunnel. Obtained pressure and temperature data are compared with those given by the SCMA code that accounts for unsteady ablation. In the SCMA code, the motion of pyrolysis gas is calculated by solving the mass and the momentum conservation equations with assuming a finite permeability determined in this study. Though a quantitative agreement is not yet accomplished, the measured pressure profile that increases initially, turns to decrease and then reaches to a plateau is reproduced qualitatively by the SCMA code. It is suggested from the experimental data and the computed result that delamination of ablator likely occurs at the region where ablator is not fully charred but partially pyrolyzed resulting in a smaller porosity and higher pyrolysis gas pressure.

Original languageEnglish
Title of host publication36th AIAA Thermophysics Conference
Publication statusPublished - 2003 Dec 1
Event36th AIAA Thermophysics Conference 2003 - Orlando, FL, United States
Duration: 2003 Jun 232003 Jun 26

Publication series

Name36th AIAA Thermophysics Conference


Other36th AIAA Thermophysics Conference 2003
Country/TerritoryUnited States
CityOrlando, FL

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering
  • Condensed Matter Physics


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