hydrophysicsФундаментальная и прикладная гидрофизикаFundamental and Applied Hydrophysics2073-66732782-5221St. Petersburg Research Center of the Russian Academy of Sciences10.59887/2073-6673.2025.18(2)-5INTJZNhydrophysics-1431Research ArticleВЗАИМОДЕЙСТВИЕ МОРСКИХ ОБЪЕКТОВ, ОКЕАНА И АТМОСФЕРЫINTERACTION OF MARINE OBJECTS*, OCEAN‏ AND ‏ATMOSPHEREЧисленное моделирование динамики плавучей полиэтиленовой пленки в поле поверхностных волнNumerical Modeling of a Floating Polyethylene Film Dynamics in the Field of Surface Waveshttps://orcid.org/0000-0002-3430-2846ХазановГ. Е.KhazanovG. E.

Хазанов Григорий Ефимович, научный сотрудник, кандидат физико-математических наук

603950, г. Н. Новгород, ул. Ульянова, д. 46

Scopus AuthorID: 57325095100

46 Ulyanov Str., Nizhny Novgorod, 603950

g.khazanov@ipfran.ruhttps://orcid.org/0000-0002-0869-4954ЕрмаковС. А.ErmakovS. A.

Ермаков Станислав Александрович, заведующий отделом, старший научный сотрудник,доктор физико-математических наук

603950, г. Н. Новгород, ул. Нестерова, 5а

603950, г. Н. Новгород, ул. Нестерова, 5а

46 Ulyanov Str., Nizhny Novgorod, 603950

5а Nesterov Str., Nizhny Novgorod, 603950

stas.ermakov@ipfran.ruИнститут прикладной физики им. А.В. Гапонова-Грехова РАНРоссияA.V. Gaponov-Grekhov Institute of Applied Physics of the RASRussian FederationИнститут прикладной физики им. А.В. Гапонова-Грехова РАН; Волжский государственный университет водного транспортаРоссияA.V. Gaponov-Grekhov Institute of Applied Physics of the RAS; Volga State University of Water TransportRussian Federation2025140720251826882Copyright © Хазанов Г.Е., Ермаков С.А., 20252025Хазанов Г.Е., Ермаков С.А.Khazanov G.E., Ermakov S.A.This work is licensed under a Creative Commons Attribution 4.0 License.https://hydrophysics.spbrc.ru/jour/article/view/1431

Развитие физических основ дистанционной диагностики областей пластикового загрязнения водоемов приобрело в настоящее время высокую актуальность в связи с ростом антропогенного загрязнения Мирового океана. Значительный вклад в такое загрязнение связан с полиэтиленовыми (ПЭ-) пленками, которые приводят к изменчивости сигнала радиолокационного рассеяния при зондировании морской поверхности, что может быть использовано для диагностики пластикового мусора. ПЭ-пленки при этом часто находятся в приповерхностных слоях воды, а не плавают на поверхности, несмотря на то, что их плотность обычно меньше, чем плотность воды. В работе проведено численное моделирование динамики плавучей ПЭ-пленки в поле поверхностных волн. В качестве инструмента численного моделирования использовалось программное обеспечение с открытым исходным кодом «OpenFOAM». Обнаружено, что всплывающая в отсутствие волн пленка может притапливаться, всплывать или находиться в равновесии на определенной глубине при наличии волн. Обнаруженный эффект указывает на возникновение дополнительной средней силы в осциллирующем поле волн, которая направлена против сил плавучести и зависит от крутизны волны и глубины начального расположения пленки.

The development of the physical foundations of remote diagnostics of areas of plastic pollution of reservoirs has now become highly relevant due to the increase in anthropogenic pollution of the World Ocean. The pollution is largely related to the polyethylene (PE) films, which can affect to variability of the radar scattering signal when probing the sea surface, which can be used to diagnose plastic areas. PE films are often located in the near-surface layers of water, rather than floating on the surface, despite the fact that their density is usually less than the density of water. This paper presents a numerical study of the dynamics of a small floating PE film in the field of surface waves. The open source software “OpenFOAM” was used as a numerical modeling tool. It was found that the film floats in the absence of waves, but if there are any surface waves, it can sink, float, or be in the equilibrium at some depth. The detected effect indicates the occurrence of an additional force in a fast oscillating wave field, which is directed against buoyancy forces and depends on the steepness of the wave and the depth of the initial film location.

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The authors declare that there are no conflicts of interest present.