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Geophysical water flows with constant vorticity and centripetal terms

We consider here three-dimensional water flows governed by the geophysical water wave equations exhibiting full Coriolis and centripetal terms. More precisely, assuming a constant vorticity vector, we derive a family of explicit solutions, in Eulerian coordinates, to the above-mentioned equations an...

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Autor principal: Martin, Calin Iulian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7851037/
https://www.ncbi.nlm.nih.gov/pubmed/33568884
http://dx.doi.org/10.1007/s10231-020-00985-4
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author Martin, Calin Iulian
author_facet Martin, Calin Iulian
author_sort Martin, Calin Iulian
collection PubMed
description We consider here three-dimensional water flows governed by the geophysical water wave equations exhibiting full Coriolis and centripetal terms. More precisely, assuming a constant vorticity vector, we derive a family of explicit solutions, in Eulerian coordinates, to the above-mentioned equations and their boundary conditions. These solutions are the only ones under the assumption of constant vorticity. To be more specific, we show that the components of the velocity field (with respect to the rotating coordinate system) vanish. We also determine a formula for the pressure function and we show that the surface, denoted [Formula: see text] , is time independent, but is not flat and can be explicitly determined. We conclude our analysis by converting to the fixed inertial frame, the solutions we obtained before in the rotating frame. It is established that, in the fixed frame, the velocity field is non-vanishing and the free surface is non-flat, being explicitly determined. Moreover, the system consisting of the velocity field, the pressure and the surface defining function represents explicit and exact solutions to the three-dimensional water waves equations and their boundary conditions.
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spelling pubmed-78510372021-02-08 Geophysical water flows with constant vorticity and centripetal terms Martin, Calin Iulian Ann Mat Pura Appl Article We consider here three-dimensional water flows governed by the geophysical water wave equations exhibiting full Coriolis and centripetal terms. More precisely, assuming a constant vorticity vector, we derive a family of explicit solutions, in Eulerian coordinates, to the above-mentioned equations and their boundary conditions. These solutions are the only ones under the assumption of constant vorticity. To be more specific, we show that the components of the velocity field (with respect to the rotating coordinate system) vanish. We also determine a formula for the pressure function and we show that the surface, denoted [Formula: see text] , is time independent, but is not flat and can be explicitly determined. We conclude our analysis by converting to the fixed inertial frame, the solutions we obtained before in the rotating frame. It is established that, in the fixed frame, the velocity field is non-vanishing and the free surface is non-flat, being explicitly determined. Moreover, the system consisting of the velocity field, the pressure and the surface defining function represents explicit and exact solutions to the three-dimensional water waves equations and their boundary conditions. Springer Berlin Heidelberg 2020-05-02 2021 /pmc/articles/PMC7851037/ /pubmed/33568884 http://dx.doi.org/10.1007/s10231-020-00985-4 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Martin, Calin Iulian
Geophysical water flows with constant vorticity and centripetal terms
title Geophysical water flows with constant vorticity and centripetal terms
title_full Geophysical water flows with constant vorticity and centripetal terms
title_fullStr Geophysical water flows with constant vorticity and centripetal terms
title_full_unstemmed Geophysical water flows with constant vorticity and centripetal terms
title_short Geophysical water flows with constant vorticity and centripetal terms
title_sort geophysical water flows with constant vorticity and centripetal terms
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7851037/
https://www.ncbi.nlm.nih.gov/pubmed/33568884
http://dx.doi.org/10.1007/s10231-020-00985-4
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