Thermal expansion for charring ablative materials

Rui Fu; Haoyue Weng; Jonathan F. Wenk; Alexandre Martin

doi:10.2514/1.T5718

Thermal expansion for charring ablative materials

Rui Fu, Haoyue Weng, Jonathan F. Wenk, Alexandre Martin

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

A mesh moving scheme is developed and tested in a finite-volume thermo-mechanical solver to investigate the effects of geometry deformation on thermal protection system materials. Verification cases are conducted to test the implementation of the moving mesh scheme. An iso-Q sample is used to demonstrate the swelling of thermal protection system materials on a realistic geometry. The results show that, under certain conditions, thermal expansion should not be ignored. The resulting local thermal strain reaches up to 30% and suggests that strain effects on the material properties should be considered. Moreover, the geometric expansion may also result in changes in the surrounding flow field, which may ultimately change the incoming heat flux and many boundary conditions.

Original language	English
Pages (from-to)	57-65
Number of pages	9
Journal	Journal of Thermophysics and Heat Transfer
Volume	34
Issue number	1
DOIs	https://doi.org/10.2514/1.T5718
State	Published - 2020

Bibliographical note

Publisher Copyright:
© 2019 by the American Institute of Aeronautics and Astronautics, Inc.

Funding

Financial support for this work was provided by the NASA SpaceTech-REDDI-2017-ESI Award 80NSSC18K0261 and Kentucky Science and Engineering Foundation Research and Development Excellence Program award number KSEF-3939-RDE-020. The

Funders	Funder number
National Aeronautics and Space Administration	80NSSC18K0261
Kentucky Science and Engineering Foundation	KSEF-3939-RDE-020

ASJC Scopus subject areas

Condensed Matter Physics
Aerospace Engineering
Mechanical Engineering
Fluid Flow and Transfer Processes
Space and Planetary Science

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10.2514/1.T5718

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abstract = "A mesh moving scheme is developed and tested in a finite-volume thermo-mechanical solver to investigate the effects of geometry deformation on thermal protection system materials. Verification cases are conducted to test the implementation of the moving mesh scheme. An iso-Q sample is used to demonstrate the swelling of thermal protection system materials on a realistic geometry. The results show that, under certain conditions, thermal expansion should not be ignored. The resulting local thermal strain reaches up to 30% and suggests that strain effects on the material properties should be considered. Moreover, the geometric expansion may also result in changes in the surrounding flow field, which may ultimately change the incoming heat flux and many boundary conditions.",

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T1 - Thermal expansion for charring ablative materials

AU - Fu, Rui

AU - Weng, Haoyue

AU - Wenk, Jonathan F.

AU - Martin, Alexandre

PY - 2020

Y1 - 2020

N2 - A mesh moving scheme is developed and tested in a finite-volume thermo-mechanical solver to investigate the effects of geometry deformation on thermal protection system materials. Verification cases are conducted to test the implementation of the moving mesh scheme. An iso-Q sample is used to demonstrate the swelling of thermal protection system materials on a realistic geometry. The results show that, under certain conditions, thermal expansion should not be ignored. The resulting local thermal strain reaches up to 30% and suggests that strain effects on the material properties should be considered. Moreover, the geometric expansion may also result in changes in the surrounding flow field, which may ultimately change the incoming heat flux and many boundary conditions.

AB - A mesh moving scheme is developed and tested in a finite-volume thermo-mechanical solver to investigate the effects of geometry deformation on thermal protection system materials. Verification cases are conducted to test the implementation of the moving mesh scheme. An iso-Q sample is used to demonstrate the swelling of thermal protection system materials on a realistic geometry. The results show that, under certain conditions, thermal expansion should not be ignored. The resulting local thermal strain reaches up to 30% and suggests that strain effects on the material properties should be considered. Moreover, the geometric expansion may also result in changes in the surrounding flow field, which may ultimately change the incoming heat flux and many boundary conditions.

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Thermal expansion for charring ablative materials

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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