Microscale simulations of porous TPS materials: Application to permeability

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

5 Scopus citations

Abstract

An approach for performing microscale simulations of porous spacecraft thermal protection systems (TPS) is presented. This approach uses the Direct Simulation Monte Carlo (DSMC) method to accurately model the flow of gas through the porous media, which in many cases is rarefied. Here we present this method applied to two cases of porous media flow. The first is flow through idealized two-dimensional cylinders. Here, we found very good agreement between both CFD and DSMC calculations and an empirical relation from the literature. For the second case, we simulate flow through an approximation of a realistic three-dimensional microstructure. Here we also present a method for creating complex random fibrous microstructures. In our analysis, we find reasonably good agreement with experiment. However, discrepancies in the experimental data prevent definitive validation using this dataset.

Original languageEnglish (US)
Title of host publicationAIAA AVIATION 2014 -11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624102813
DOIs
StatePublished - 2014
EventAIAA AVIATION 2014 -11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference 2014 - Atlanta, GA, United States
Duration: Jun 16 2014Jun 20 2014

Publication series

NameAIAA AVIATION 2014 -11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference

Other

OtherAIAA AVIATION 2014 -11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference 2014
Country/TerritoryUnited States
CityAtlanta, GA
Period6/16/146/20/14

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