Author ORCID Identifier

https://orcid.org/0000-0003-2346-3713

Year of Publication

2021

Degree Name

Master of Science in Mechanical Engineering (MSME)

Document Type

Master's Thesis

College

Engineering

Department/School/Program

Mechanical Engineering

First Advisor

Dr. Alexandre Martin

Abstract

Thermal Protection Systems (TPS) are a necessary component for atmospheric entry. Most TPS contain thin layers of various materials such as ceramic coatings, pore sealers and bonding agents. When modeling TPS, these thin layers are often neglected due to the difference in scale between the TPS (centimeters) and the thin layers (micrometers). In this study, a volume-averaging flux-conservation method is implemented in the governing equations of a finite volume material response code. The model proposes the addition of a volume and area fraction coefficient which utilizes a weighted-averaging between the amount of thin layer and heat shield material in a given cell. A verification case shows that the new model is capable of capturing physics of a thin layers of materials without additional computational costs. The model is also applied to heat conduction and porous flow to show that the volume-averaging flux-conservation model is effective at capturing the physics without adding additional computational cost.

Digital Object Identifier (DOI)

https://doi.org/10.13023/etd.2021.404

Funding Information

The material is based upon work supported by National Aeronautics and Space Agency Kentucky under National Aeronautics and Space Agency award No: NNX15AR69H.

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