Numerical simulation of under-ice radiatively driven convection in lakes with different water transparency
In the paper, the results of eddy-resolving numerical simulation of convection generated by inhomogeneous heating of water column by solar radiation in an ice-covered shallow lake (the factor of wind impact on the water surface is excluded). The calculations have been performed using the Implicit LE...
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| Format: | Article |
| Language: | English |
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Peter the Great St.Petersburg Polytechnic University
2025-03-01
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| Series: | St. Petersburg Polytechnical University Journal: Physics and Mathematics |
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| Online Access: | https://physmath.spbstu.ru/article/2025.78.06/ |
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| author | Smirnov Sergei Smirnovsky Alexander Bogdanov Sergey Zdorovennova Galina Efremova Tatiana Palshin Nikolay Zdorovennov Roman |
| author_facet | Smirnov Sergei Smirnovsky Alexander Bogdanov Sergey Zdorovennova Galina Efremova Tatiana Palshin Nikolay Zdorovennov Roman |
| author_sort | Smirnov Sergei |
| collection | DOAJ |
| description | In the paper, the results of eddy-resolving numerical simulation of convection generated by inhomogeneous heating of water column by solar radiation in an ice-covered shallow lake (the factor of wind impact on the water surface is excluded). The calculations have been performed using the Implicit LES method for different values of the extinction coefficient, which defines the degree of attenuation of solar radiation in the water column. An analysis of the three-dimensional flow structure, the time evolution of temperature and velocity pulsations was carried out, and the increments of the lower boundary and the temperature of the convective mixed layer were calculated depending on the incoming heat. The results obtained shed light upon the nature of the processes occurring in the type of lakes under consideration, in particular, to identify the influence of water transparency on the convective mixing process. |
| format | Article |
| id | doaj-art-3f6b5e94b9b149e09324d4ddba3ea48b |
| institution | Kabale University |
| issn | 2405-7223 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Peter the Great St.Petersburg Polytechnic University |
| record_format | Article |
| series | St. Petersburg Polytechnical University Journal: Physics and Mathematics |
| spelling | doaj-art-3f6b5e94b9b149e09324d4ddba3ea48b2025-08-20T03:44:35ZengPeter the Great St.Petersburg Polytechnic UniversitySt. Petersburg Polytechnical University Journal: Physics and Mathematics2405-72232025-03-0118110.18721/JPM.1810620714726Numerical simulation of under-ice radiatively driven convection in lakes with different water transparencySmirnov Sergei0https://orcid.org/0000-0002-3972-9259Smirnovsky Alexander1Bogdanov Sergey2https://orcid.org/0000-0003-4150-2712Zdorovennova Galina3https://orcid.org/0000-0003-2726-0104Efremova Tatiana4https://orcid.org/0000-0003-0313-6731Palshin Nikolay5https://orcid.org/0000-0003-1540-3788Zdorovennov Roman6https://orcid.org/0000-0003-1695-4872Northern Water Problems Institute Karelian Research Centre RASPeter the Great St. Petersburg Polytechnic UniversityNorthern Water Problems Institute Karelian Research Centre RASNorthern Water Problems Institute Karelian Research Centre RASNorthern Water Problems Institute Karelian Research Centre RASNorthern Water Problems Institute Karelian Research Centre RASNorthern Water Problems Institute Karelian Research Centre RASIn the paper, the results of eddy-resolving numerical simulation of convection generated by inhomogeneous heating of water column by solar radiation in an ice-covered shallow lake (the factor of wind impact on the water surface is excluded). The calculations have been performed using the Implicit LES method for different values of the extinction coefficient, which defines the degree of attenuation of solar radiation in the water column. An analysis of the three-dimensional flow structure, the time evolution of temperature and velocity pulsations was carried out, and the increments of the lower boundary and the temperature of the convective mixed layer were calculated depending on the incoming heat. The results obtained shed light upon the nature of the processes occurring in the type of lakes under consideration, in particular, to identify the influence of water transparency on the convective mixing process.https://physmath.spbstu.ru/article/2025.78.06/radiatively-driven under-ice convectionwater transparencyturbulent velocity pulsationsimplicit les |
| spellingShingle | Smirnov Sergei Smirnovsky Alexander Bogdanov Sergey Zdorovennova Galina Efremova Tatiana Palshin Nikolay Zdorovennov Roman Numerical simulation of under-ice radiatively driven convection in lakes with different water transparency St. Petersburg Polytechnical University Journal: Physics and Mathematics radiatively-driven under-ice convection water transparency turbulent velocity pulsations implicit les |
| title | Numerical simulation of under-ice radiatively driven convection in lakes with different water transparency |
| title_full | Numerical simulation of under-ice radiatively driven convection in lakes with different water transparency |
| title_fullStr | Numerical simulation of under-ice radiatively driven convection in lakes with different water transparency |
| title_full_unstemmed | Numerical simulation of under-ice radiatively driven convection in lakes with different water transparency |
| title_short | Numerical simulation of under-ice radiatively driven convection in lakes with different water transparency |
| title_sort | numerical simulation of under ice radiatively driven convection in lakes with different water transparency |
| topic | radiatively-driven under-ice convection water transparency turbulent velocity pulsations implicit les |
| url | https://physmath.spbstu.ru/article/2025.78.06/ |
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