Numerical simulation of transpiration cooling with a two-dimensional substructure
This paper presents a numerical model which assesses the coupled effect when transpiration cooling is applied to the external skin of a thermal protection system and the substructure of a high speed flight vehicle. The PIRATE transpiration cooling code has been extended and validated to account for...
| Main Authors: | , , |
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| Format: | Conference item |
| Language: | English |
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ESA Conference Bureau
2019
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| _version_ | 1826258355398639616 |
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| author | Naved, I McGilvray, M Hermann, T |
| author_facet | Naved, I McGilvray, M Hermann, T |
| author_sort | Naved, I |
| collection | OXFORD |
| description | This paper presents a numerical model which assesses the coupled effect when transpiration cooling is applied to the external skin of a thermal protection system and the substructure of a high speed flight vehicle. The PIRATE transpiration cooling code has been extended and validated to account for quasi-two-dimensional lateral conduction effects allowing for analysis of more complex geometries. This enables very fast calculations of the two dimensional transient temperature response of a transpiration cooled thermal protection system, ideally suitable for large scale systems studies. To solve for the coupled transpiration cooled material and two-dimensional substructure, PIRATE has been coupled with the commercial finite element package COMSOL. This enables modelling of the longer term thermal effects of the integrated heat load over a flight trajectory. Transpiration cooling has been applied to a simplified blunt body model with an aluminium substructure. Results for the substructure temperature history for the Space Shuttle trajectory are obtained showing that transpiration cooling can lead to a 40% reduction in peak substructure temperature as well as a reduction in thermal stresses near the stagnation point. |
| first_indexed | 2024-03-06T18:32:41Z |
| format | Conference item |
| id | oxford-uuid:0a34d115-b814-4456-800c-6697efe4ca6a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:32:41Z |
| publishDate | 2019 |
| publisher | ESA Conference Bureau |
| record_format | dspace |
| spelling | oxford-uuid:0a34d115-b814-4456-800c-6697efe4ca6a2022-03-26T09:22:32ZNumerical simulation of transpiration cooling with a two-dimensional substructureConference itemhttp://purl.org/coar/resource_type/c_5794uuid:0a34d115-b814-4456-800c-6697efe4ca6aEnglishSymplectic Elements at OxfordESA Conference Bureau2019Naved, IMcGilvray, MHermann, TThis paper presents a numerical model which assesses the coupled effect when transpiration cooling is applied to the external skin of a thermal protection system and the substructure of a high speed flight vehicle. The PIRATE transpiration cooling code has been extended and validated to account for quasi-two-dimensional lateral conduction effects allowing for analysis of more complex geometries. This enables very fast calculations of the two dimensional transient temperature response of a transpiration cooled thermal protection system, ideally suitable for large scale systems studies. To solve for the coupled transpiration cooled material and two-dimensional substructure, PIRATE has been coupled with the commercial finite element package COMSOL. This enables modelling of the longer term thermal effects of the integrated heat load over a flight trajectory. Transpiration cooling has been applied to a simplified blunt body model with an aluminium substructure. Results for the substructure temperature history for the Space Shuttle trajectory are obtained showing that transpiration cooling can lead to a 40% reduction in peak substructure temperature as well as a reduction in thermal stresses near the stagnation point. |
| spellingShingle | Naved, I McGilvray, M Hermann, T Numerical simulation of transpiration cooling with a two-dimensional substructure |
| title | Numerical simulation of transpiration cooling with a two-dimensional substructure |
| title_full | Numerical simulation of transpiration cooling with a two-dimensional substructure |
| title_fullStr | Numerical simulation of transpiration cooling with a two-dimensional substructure |
| title_full_unstemmed | Numerical simulation of transpiration cooling with a two-dimensional substructure |
| title_short | Numerical simulation of transpiration cooling with a two-dimensional substructure |
| title_sort | numerical simulation of transpiration cooling with a two dimensional substructure |
| work_keys_str_mv | AT navedi numericalsimulationoftranspirationcoolingwithatwodimensionalsubstructure AT mcgilvraym numericalsimulationoftranspirationcoolingwithatwodimensionalsubstructure AT hermannt numericalsimulationoftranspirationcoolingwithatwodimensionalsubstructure |