Prediction of thermal protection system material permeability and hydraulic tortuosity factor using Direct Simulation Monte Carlo

Revathi Jambunathan, Deborah A. Levin, Arnaud Borner, Joseph C. Ferguson, Francesco Panerai

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

Abstract

Carbon preforms used in Thermal Protection System (TPS) materials are 80 to 90% porous, allowing for boundary layer and pyrolysis gases to flow through the porous regions. The bulk material properties such as permeability and hydraulic tortuosity factor affect the transport of the boundary layer gases. The use of Direct Simulation Monte Carlo along with the Klinkenberg permeability formulation allows us to compute the continuum permeability and Knudsen correction factor for flow in the transition regime. In this work, we have computed the permeability of two types of carbon preforms, namely, Morgan Felt and FiberForm, and assessed the effect of orientation of the permeability. It was found that for both the anisotropic materials, the permeability is higher in the in-plane orientation compared to the through-thickness orientation. Compared to Morgan Felt, FiberForm is less permeable, in both, through thickness and in-plane directions. The hydraulic tortuosity was higher for the FiberForm compared to Morgan Felt, and it was also found that the through-thickness orientation is more tortuous compared to the in-plane orientation.

Original languageEnglish (US)
Title of host publicationAIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Edition210059
ISBN (Print)9781624105241
DOIs
StatePublished - Jan 1 2018
EventAIAA Aerospace Sciences Meeting, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA Aerospace Sciences Meeting, 2018
Number210059

Other

OtherAIAA Aerospace Sciences Meeting, 2018
CountryUnited States
CityKissimmee
Period1/8/181/12/18

ASJC Scopus subject areas

  • Aerospace Engineering

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  • Cite this

    Jambunathan, R., Levin, D. A., Borner, A., Ferguson, J. C., & Panerai, F. (2018). Prediction of thermal protection system material permeability and hydraulic tortuosity factor using Direct Simulation Monte Carlo. In AIAA Aerospace Sciences Meeting (210059 ed.). (AIAA Aerospace Sciences Meeting, 2018; No. 210059). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2018-0497