Dynamics of gas bubbles in time-variant temperature fields
<p style="text-align:justify;"> The effect of time-variant temperature on the dynamics of a single gas bubble in a liquid is investigated. With changes in temperature, several physical parameters controlling bubble behaviour change including surface tension, diffusivity, vapour pre...
| Main Authors: | , , , , |
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| Format: | Journal article |
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Cambridge University Press
2010
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| _version_ | 1797073295995043840 |
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| author | Webb, I Arora, M Roy, R Payne, S Coussios, C |
| author_facet | Webb, I Arora, M Roy, R Payne, S Coussios, C |
| author_sort | Webb, I |
| collection | OXFORD |
| description | <p style="text-align:justify;"> The effect of time-variant temperature on the dynamics of a single gas bubble in a liquid is investigated. With changes in temperature, several physical parameters controlling bubble behaviour change including surface tension, diffusivity, vapour pressure and gas solubility. A single-bubble model is formulated and a numerical simulation implemented to model the radius–time profile of a bubble, across a range of initial bubble sizes and rates of heating, taking into account the aforementioned parameter temperature dependences. The model is validated experimentally in a xanthan gum gel phantom, tracking the evolution of the bubbles using digital photography and an image analysis sizing algorithm. It is shown that the natural tendency for a bubble to dissolve can be reversed by an increase in temperature, but only above a certain radius-dependent threshold rate of heating. </p> |
| first_indexed | 2024-03-06T23:20:02Z |
| format | Journal article |
| id | oxford-uuid:686d5107-e9e2-4811-a30d-3fdc3e63a564 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T23:20:02Z |
| publishDate | 2010 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | oxford-uuid:686d5107-e9e2-4811-a30d-3fdc3e63a5642022-03-26T18:44:50ZDynamics of gas bubbles in time-variant temperature fieldsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:686d5107-e9e2-4811-a30d-3fdc3e63a564Symplectic Elements at OxfordCambridge University Press2010Webb, IArora, MRoy, RPayne, SCoussios, C <p style="text-align:justify;"> The effect of time-variant temperature on the dynamics of a single gas bubble in a liquid is investigated. With changes in temperature, several physical parameters controlling bubble behaviour change including surface tension, diffusivity, vapour pressure and gas solubility. A single-bubble model is formulated and a numerical simulation implemented to model the radius–time profile of a bubble, across a range of initial bubble sizes and rates of heating, taking into account the aforementioned parameter temperature dependences. The model is validated experimentally in a xanthan gum gel phantom, tracking the evolution of the bubbles using digital photography and an image analysis sizing algorithm. It is shown that the natural tendency for a bubble to dissolve can be reversed by an increase in temperature, but only above a certain radius-dependent threshold rate of heating. </p> |
| spellingShingle | Webb, I Arora, M Roy, R Payne, S Coussios, C Dynamics of gas bubbles in time-variant temperature fields |
| title | Dynamics of gas bubbles in time-variant temperature fields |
| title_full | Dynamics of gas bubbles in time-variant temperature fields |
| title_fullStr | Dynamics of gas bubbles in time-variant temperature fields |
| title_full_unstemmed | Dynamics of gas bubbles in time-variant temperature fields |
| title_short | Dynamics of gas bubbles in time-variant temperature fields |
| title_sort | dynamics of gas bubbles in time variant temperature fields |
| work_keys_str_mv | AT webbi dynamicsofgasbubblesintimevarianttemperaturefields AT aroram dynamicsofgasbubblesintimevarianttemperaturefields AT royr dynamicsofgasbubblesintimevarianttemperaturefields AT paynes dynamicsofgasbubblesintimevarianttemperaturefields AT coussiosc dynamicsofgasbubblesintimevarianttemperaturefields |