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Ablator Modeling : Why Not Much Has Changed Over the Past 45 plus Years

Author
Laub, B.
Published
March 2011.
Physical Description
1 electronic document
Online Version

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Summary
In the late 1950s, the earliest models describing the thermal response of ablative materials were based on the heat of ablation concept, which is an empirical approach that was reasonable for the types of materials of interest at that time. In the early-mid 60s the models were expanded to include pyrolysis since organic resin composites became the TPS materials of interest. However, surface recession was still predominantly modeled via empirical correlation. The development of the 1-D CMA finite difference code in the mid-late 60s introduced the thermochemical ablation approach for gas/surface interactions. Since that time investigators have developed finite volume and finite element codes, in 1-D, 2-D and 3-D, but the basic modeling has not evolved significantly. Models describing internal gas pressure due to pyrolysis, particle impact erosion, in-depth radiant transport, etc., have been added to address specific problems, but the fundamental modeling has not evolved. The reasons for this stagnation, as viewed by the author, will be described.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20110012046.
ARC-E-DAA-TN3105.
4th AF/SNL/NASA Ablation Workshop; 1-3 Mar. 2011; Albuquerque, NM; United States.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15990721