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Permanent link (DOI): https://doi.org/10.7939/R33D2P

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Computational Study of the Water Cycle at the Surface of Mars Open Access

Descriptions

Other title
Subject/Keyword
Radiation
CFD
Regolith
Thermal diffusion
Fog
Phoenix Mission
Terrestrial Water
Mass Transport
Diffusion
Frost
Mars
Porous Media
Thermo-diffusion
Numerical Methods
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Zubik, Jakub Tadeusz
Supervisor and department
Lange, Carlos (Mechanical Engineering)
Examining committee member and department
Kostiuk, Larry (Mechanical Engineering)
Lange, Carlos (Mechanical Engineering)
Hayes, Robert (Chemical and Materials Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2012-06-20T11:42:00Z
Graduation date
2012-11
Degree
Master of Science
Degree level
Master's
Abstract
To understand the water cycle on Mars, details of mass and energy transfer between the surface and the atmosphere are of importance. A complete model, involving transient variations of the water in gaseous and solid phases in the atmosphere and the regolith, is developed and solved numerically for results. The diffusion of water vapour in the ground is treated for Knudsen and thermal diffusion effects. Numerical simulations of the evening hours of Sol 70 of the Phoenix mission confirmed that a deposition of water can occur. The results show how phase change occurred right after the temperature of air is cooled down below the frost point and deposited on the surface as frost, then sublimated back into the atmosphere in the morning. Results of the two-dimensional model show that there are additional spatial fluctuations of fog structure resulting from variations in the nature and slope of the local terrain.
Language
English
DOI
doi:10.7939/R33D2P
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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File title: Computational Study of the Water Cycle at the Surface of Mars
File author: Jakub T. Zubik
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