Computational modeling of expanded plasma plumes in vacuum and in a tank
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1999.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2010
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| Online Access: | http://hdl.handle.net/1721.1/50613 |
| _version_ | 1826215901441032192 |
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| author | Asare, Bernard K. (Bernard Kwaku), 1972- |
| author2 | Manuel Martinez-Sanchez. |
| author_facet | Manuel Martinez-Sanchez. Asare, Bernard K. (Bernard Kwaku), 1972- |
| author_sort | Asare, Bernard K. (Bernard Kwaku), 1972- |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1999. |
| first_indexed | 2024-09-23T16:38:50Z |
| format | Thesis |
| id | mit-1721.1/50613 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T16:38:50Z |
| publishDate | 2010 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/506132019-04-12T09:55:18Z Computational modeling of expanded plasma plumes in vacuum and in a tank Asare, Bernard K. (Bernard Kwaku), 1972- Manuel Martinez-Sanchez. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Aeronautics and Astronautics. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1999. Includes bibliographical references (leaves 143-149). Electric propulsion devices have shown to offer substantial fuel savings for various space missions. Hall thrusters, specifically, have shown great promise over the years due to their near optimum specific impulse for a number of space missions. The Hall thruster, however, releases a partially ionized plasma plume which contaminates any surface it comes into contact with. Backflow contamination can lead to sputtering and effluent deposition on critical spacecraft components. A computational method for studying these interactions was developed by David Oh in 1997. He developed a Particle-in-Cell and Direct Simulation Monte Carlo (PIC-DSMC) algorithm to model the expansion of a plasma plume from a Hall thruster into a vacuum. In his work he implemented a plasma-surface interaction model which determined erosion rates on surfaces made of quartz, silicon and silver but he did not track the surface material removed. In this work Oh's model is expanded to include the removal and tracking of material from generic spacecraft surfaces and the walls of a vacuum tank. Sputtering yields adopted in this model are based on sputtering theory developed by Matsunami and Yamamura. Since the plasma can have a negative impact on spacecraft subcomponents, a method for protecting the spacecraft (in the form of a protective shield) is proposed, studied, and recommendations are discussed. by Bernard K. Asare. S.M. 2010-01-07T21:01:08Z 2010-01-07T21:01:08Z 1999 1999 Thesis http://hdl.handle.net/1721.1/50613 47095319 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 149 leaves application/pdf Massachusetts Institute of Technology |
| spellingShingle | Aeronautics and Astronautics. Asare, Bernard K. (Bernard Kwaku), 1972- Computational modeling of expanded plasma plumes in vacuum and in a tank |
| title | Computational modeling of expanded plasma plumes in vacuum and in a tank |
| title_full | Computational modeling of expanded plasma plumes in vacuum and in a tank |
| title_fullStr | Computational modeling of expanded plasma plumes in vacuum and in a tank |
| title_full_unstemmed | Computational modeling of expanded plasma plumes in vacuum and in a tank |
| title_short | Computational modeling of expanded plasma plumes in vacuum and in a tank |
| title_sort | computational modeling of expanded plasma plumes in vacuum and in a tank |
| topic | Aeronautics and Astronautics. |
| url | http://hdl.handle.net/1721.1/50613 |
| work_keys_str_mv | AT asarebernardkbernardkwaku1972 computationalmodelingofexpandedplasmaplumesinvacuumandinatank |