Multiphysics model validation of resistojets with concentric tubular heat exchanger
Multiphysics model validation of resistojets with concentric tubular heat exchanger
Operation of electrothermal thrusters at extreme temperatures and power densities requires a detailed understanding of numerous highly-coupled physical processes. A high-temperature resistojet produced via metal additive manufacturing is in development at the University of Southampton. This paper describes a multiphysics model and validation from data on a high-temperature hydrogen resistojet. The investigation is broken down in two domains: the nozzle, with the influence of the vacuum chamber, and the full thruster. Compressible Navier-Stokes equations coupled with Joule heating show good agreement of the model solution with experimental data, while thrust deviates from measured data at lower Reynolds number regimes.
Romei, Federico
2c01d8c3-430b-49f8-9c8c-e30d0d135f89
15 December 2017
Romei, Federico
2c01d8c3-430b-49f8-9c8c-e30d0d135f89
Romei, Federico
(2017)
Multiphysics model validation of resistojets with concentric tubular heat exchanger.
7th European Conference for Aeronautics and Space Sciences (EUCASS 2017), , Milan, Italy.
03 - 06 Jul 2017.
(doi:10.13009/EUCASS2017-378).
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Conference or Workshop Item
(Paper)
Abstract
Operation of electrothermal thrusters at extreme temperatures and power densities requires a detailed understanding of numerous highly-coupled physical processes. A high-temperature resistojet produced via metal additive manufacturing is in development at the University of Southampton. This paper describes a multiphysics model and validation from data on a high-temperature hydrogen resistojet. The investigation is broken down in two domains: the nozzle, with the influence of the vacuum chamber, and the full thruster. Compressible Navier-Stokes equations coupled with Joule heating show good agreement of the model solution with experimental data, while thrust deviates from measured data at lower Reynolds number regimes.
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Published date: 15 December 2017
Venue - Dates:
7th European Conference for Aeronautics and Space Sciences (EUCASS 2017), , Milan, Italy, 2017-07-03 - 2017-07-06
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Local EPrints ID: 412423
URI: http://eprints.soton.ac.uk/id/eprint/412423
PURE UUID: ce96a3cc-2f84-453f-82d7-022bc5a91107
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Date deposited: 17 Jul 2017 13:41
Last modified: 11 Nov 2024 20:33
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