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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">hydrophysics</journal-id><journal-title-group><journal-title xml:lang="ru">Фундаментальная и прикладная гидрофизика</journal-title><trans-title-group xml:lang="en"><trans-title>Fundamental and Applied Hydrophysics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-6673</issn><issn pub-type="epub">2782-5221</issn><publisher><publisher-name>St. Petersburg Research Center of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.7868/S2073667319020047</article-id><article-id custom-type="elpub" pub-id-type="custom">hydrophysics-47</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФУНДАМЕНТАЛЬНЫЕ ВОПРОСЫ ГИДРОФИЗИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>FUNDAMENTAL ISSUES OF HYDROPHYSICS</subject></subj-group></article-categories><title-group><article-title>Влияние пульсаций источника на структуру и внутреннюю динамику интрузионного течения</article-title><trans-title-group xml:lang="en"><trans-title>Influence of the source pulsations on the structure and internal dynamics of the intrusion</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Исаченко</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Isachenko</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">isatchenko@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт океанологии им. П.П. Ширшова РАН<country>Россия</country></aff><aff xml:lang="en">Shirshov Institute of Oceanology of Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>29</day><month>11</month><year>2021</year></pub-date><volume>12</volume><issue>2</issue><fpage>27</fpage><lpage>33</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Исаченко И.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Исаченко И.А.</copyright-holder><copyright-holder xml:lang="en">Isachenko I.A.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://hydrophysics.spbrc.ru/jour/article/view/47">https://hydrophysics.spbrc.ru/jour/article/view/47</self-uri><abstract><p>Перевод на англ. яз.: Е.С. Кочеткова, 2019</p><p>Структура и внутренняя динамика интрузионного течения изучалась при помощи двумерной численной модели стратифицированных по плотности течений в вертикальной плоскости. Течение в модельном пространстве формировалось за счет притока жидкости промежуточной плотности в двухслойную среду. Приток осуществлялся в виде двух импульсов фиксированного объема с заданным интервалом времени между ними. Начальная стратификация определялась перепадом плотности между слоями равной толщины и толщиной промежуточного слоя. Для идентификации водных масс отдельных импульсов в расчетах использовались индивидуальные поля пассивной примеси. Предложен набор безразмерных параметров, определяющих начальные и граничные условия задачи. Численные эксперименты показали существенное влияние пульсаций расхода источника на эволюцию интрузионного течения. В зависимости от параметров затока может происходить как ускорение, так и замедление горизонтального распространения объема второй интрузии. Приведены примеры различной динамики объема второго импульса при закритических и докритических начальных числах Фруда. Расчеты показывают, что импульсный характер источника в наибольшей степени модифицирует течение при коротком интервале времени между импульсами.</p></abstract><trans-abstract xml:lang="en"><p>Translated by E.S. Kochetkova</p><p>A 2-dimensional numerical model of stratified fluid dynamics in the vertical plane was used to investigate the structure and internal dynamics of density stratified intrusive current. The intrusion was formed by the pulsed inflow of two identical volumes of water of intermediate density into the two-layer stratified environment with a given time interval. Inflowing volumes of water were marked by different passive tracers. Initial stratification was defined by the density difference between the layers of equal thickness and the thickness of the intermediate layer. A set of dimensionless parameters is proposed which define the initial and boundary conditions of the problem. Numerical experiments showed that the evolution of the intrusive current is significantly influenced by pulsations of the inflow, particularly in the case when the time interval between the pulses is short. Depending on the intrusion parameters both is possible the acceleration and slowdown of horizontal propagation of the second intrusion volume. Dynamics of inflow of the second inflow volume is different for flows with supercritical and subcritical initial Froude number. Calculations show that the pulse nature of the source modifies the flow to the greatest extent when a short time interval between pulses.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>стратифицированные течения</kwd><kwd>плотностные течения</kwd><kwd>численное моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>stratified current</kwd><kwd>density current</kwd><kwd>numerical simulation</kwd></kwd-group><funding-group xml:lang="en"><funding-statement>Investigations are supported by RFBR, grant No. 19-05-00717.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Simpson J.E. Gravity currents: In the environment and the laboratory. Cambridge: Cambridge university press, 1997. 244 p.</mixed-citation><mixed-citation xml:lang="en">Simpson J.E. Gravity currents: In the environment and the laboratory. Cambridge, Cambridge university press, 1997. 244 p.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Самолюбов Б.И. Плотностные течения и диффузия примесей. М.: Изд. ЛКИ, 2007. 352 с.</mixed-citation><mixed-citation xml:lang="en">Samolûbov B.I. Density flows and diffusion of admixtures. M., Izd. LKI, 2007. 352 p. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Johnson G.C., Lueck R.G., Sanford T.B. Stress on the Mediterranean outflow plume: Part II. Turbulent dissipation and shear measurements // Journal of Physical oceanography. 1994. V. 24, № 10. P. 2084–2092.</mixed-citation><mixed-citation xml:lang="en">Johnson G.C., Lueck R.G., Sanford T.B. Stress on the Mediterranean outflow plume: Part II. Turbulent dissipation and shear measurements. Journal of Physical Oceanography. 1994, 24, 10, 2084–2092.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Baringer M.O. N., Price J.F. Mixing and spreading of the Mediterranean outflow // Journal of Physical Oceanography. 1997. V. 27, № 8. P. 1654–1677.</mixed-citation><mixed-citation xml:lang="en">Baringer M.O. N., Price J.F. Mixing and spreading of the Mediterranean outflow. Journal of Physical Oceanography. 1997, 27, 8, 1654–1677.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Price J.F., Baringer M.O. N., Lueck R.G., Johnson G.C., Ambar I., Parrilla G., Cantos A., Kennely M.A., Sanford T.B. Mediterranean outflow mixing and dynamics // Science. 1993. V. 259, № 5099. P. 1277–1282.</mixed-citation><mixed-citation xml:lang="en">Price J.F., Baringer M.O.  N., Lueck R.G., Johnson G.C., Ambar I., Parrilla G., Cantos A., Kennely M.A., Sanford, T.  B. Mediterranean outflow mixing and dynamics. Science. 1993, 259, 5099, 1277–1282.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Latif M.A., Özsoy E., Oguz T., Ünlüata Ü. Observations of the Mediterranean inflow into the Black Sea // Deep Sea Research Part A. Oceanographic Research Papers. 1991. V. 38. P. S711–S723.</mixed-citation><mixed-citation xml:lang="en">Latif M.A., Özsoy E., Oguz T., Ünlüata Ü. Observations of the Mediterranean inflow into the Black Sea. Deep Sea Research Part A. Oceanographic Research Papers. 1991, 38, S711–S723.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Di Iorio D., Yüce H. Observations of Mediterranean flow into the Black Sea // Journal of Geophysical Research: Oceans. 1999. V. 104, № C2. P. 3091–3108.</mixed-citation><mixed-citation xml:lang="en">Di Iorio D., Yüce H. Observations of Mediterranean flow into the Black Sea. Journal of Geophysical Research: Oceans. 1999, 104, C2, 3091–3108.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Jarosz E., Teague W.J., Book J.W., Beşiktepe S. On flow variability in the Bosphorus Strait // Journal of Geophysical Research: Oceans. 2011. V. 116, № C8. P. 1–17.</mixed-citation><mixed-citation xml:lang="en">Jarosz E., Teague W.J., Book J.W., Beşiktepe S. On flow variability in the Bosphorus Strait. Journal of Geophysical Research: Oceans. 2011, 116, C8, 1–17.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Peters H., Johns W., Bower A.S., Fratantoni D.M. Mixing and entrainment in the Red Sea outflow plume. Part I: Plume structure // Journal of Physical Oceanography. 2005. V. 35, № 5. P. 569–583.</mixed-citation><mixed-citation xml:lang="en">Peters H., Johns W., Bower A.S., Fratantoni D.M. Mixing and entrainment in the Red Sea outflow plume. Part I: Plume structure. Journal of Physical Oceanography. 2005, 35, 5, 569–583.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Käse R.H., Girton J.B., Sanford T.B. Structure and variability of the Denmark Strait Overflow: Model and observations // Journal of Geophysical Research: Oceans. 2003. V. 108, № C6. P. 1–15.</mixed-citation><mixed-citation xml:lang="en">Käse R.H., Girton J.B., Sanford T.B. Structure and variability of the Denmark Strait Overflow: Model and observations. Journal of Geophysical Research: Oceans. 2003, 108, C6, 1–15.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Girton J.B., Sanford T.B. Descent and modification of the overflow plume in the Denmark Strait // Journal of Physical Oceanography. 2003. V. 33, № 7. P. 1351–1364.</mixed-citation><mixed-citation xml:lang="en">Girton J.B., Sanford T.B. Descent and modification of the overflow plume in the Denmark Strait. Journal of Physical Oceanography. 2003, 33, 7, 1351–1364.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Macrander A., Käse R.H., Send U., Valdimarsson H., Jónsson S. Spatial and temporal structure of the Denmark Strait Overflow revealed by acoustic observations // Ocean Dynamics. 2007. V. 57, № 2. P. 75–89.</mixed-citation><mixed-citation xml:lang="en">Macrander A., Käse R.H., Send U., Valdimarsson H., Jónsson S. Spatial and temporal structure of the Denmark Strait Overflow revealed by acoustic observations. Ocean Dynamics. 2007, 57, 2, 75–89.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Sutherland B.R. Interfacial gravity currents. I. Mixing and entrainment // Physics of Fluids. 2002. V. 14, № 7. P. 2244–2254.</mixed-citation><mixed-citation xml:lang="en">Sutherland B.R. Interfacial gravity currents. I. Mixing and entrainment. Physics of Fluids. 2002, 14, 7, 2244–2254.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Mehta A.P., Sutherland B.R., Kyba P.J. Interfacial gravity currents. II. Wave excitation // Physics of Fluids. 2002. V. 14, № 10. P. 3558–3569.</mixed-citation><mixed-citation xml:lang="en">Mehta A.P., Sutherland B.R., Kyba P.J. Interfacial gravity currents. II. Wave excitation. Physics of Fluids. 2002, 14, 10, 3558– 3569.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">O’Callaghan J., Rickard G., Popinet S., Stevens C. Response of buoyant plumes to transient discharges investigated using an adaptive solver // Journal of Geophysical Research: Oceans. 2010. V. 115, № C11025. P. 1–17.</mixed-citation><mixed-citation xml:lang="en">O’Callaghan J., Rickard G., Popinet S., Stevens C. Response of buoyant plumes to transient discharges investigated using an adaptive solver. Journal of Geophysical Research: Oceans. 2010, 115, C11025, 1–17.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">O’Callaghan J.M., Stevens C.L. Transient river flow into a fjord and its control of plume energy partitioning // Journal of Geophysical Research: Oceans. 2015. V. 120, № 5. P. 3444–3461.</mixed-citation><mixed-citation xml:lang="en">O’Callaghan J.M., Stevens C.L. Transient river flow into a fjord and its control of plume energy partitioning. Journal of Geophysical Research: Oceans. 2015, 120, 5, 3444–3461.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Гриценко В.А., Юрова А.А. Об основных фазах отрыва придонного гравитационного течения от склона дна // Океанология. 1999. Т. 39, № 2. С. 187–191.</mixed-citation><mixed-citation xml:lang="en">Gricenko V.A., Ûrova A.A. On the main phases of the separation of the bottom gravitational flow from the bottom slope. Okeanologiya. 1999, 39, 2, 187–191 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Гриценко В.А., Чубаренко И.П. Об особенностях структуры фронтальной зоны придонных гравитационных течений // Океанология, 2010. № 1. С. 26–32.</mixed-citation><mixed-citation xml:lang="en">Gritsenko V.A., Chubarenko I.P. On features of structure of bottom gravity current frontal zone. Oceanology. 2010, 50, 1, 28–35.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Гриценко В.А. Исследование динамики и внутренней структуры придонных гравитационных течений. Автореф. дисс. на соиск. ст. д.ф.-м.н. Калининград, 1998.</mixed-citation><mixed-citation xml:lang="en">Gricenko V.A. Study of the dynamics and internal structure of bottom gravity currents. Avtoref. diss. na soisk. st. d.f.-m.n. Kaliningrad, 1998 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Баренблатт Г.И. Анализ размерностей: Уч. пос. М.: МФТИ. 1987. C. 165.</mixed-citation><mixed-citation xml:lang="en">Barenblatt G.I. Dimension Analysis: Uch. pos. M., MFTI, 1987, 165 p. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Britter R.E., Simpson J.E. Experiments on the dynamics of a gravity current head // Journal of Fluid Mechanics. 1978. V. 88, № 2. P. 223–240.</mixed-citation><mixed-citation xml:lang="en">Britter R.E., Simpson J.E. Experiments on the dynamics of a gravity current head. Journal of Fluid Mechanics. 1978, 88, 2, 223–240.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Faust K.M., Plate E.J. Experimental investigation of intrusive gravity currents entering stably stratified fluids // Journal of Hydraulic Research. 1984. V. 22, № 5. P. 315–325.</mixed-citation><mixed-citation xml:lang="en">Faust K.M., Plate E.J. Experimental investigation of intrusive gravity currents entering stably stratified fluids. Journal of Hydraulic Research. 1984, 22, 5, 315–325.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Тернер Дж. Эффекты плавучести в жидкостях. М.: Мир, 1977. 431 с.</mixed-citation><mixed-citation xml:lang="en">Turner J.S. Buoyancy effects in fluids. Cambridge university press, 1979. 362 p.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Роуч П. Вычислительная гидродинамика. Рипол Классик, 1980. 612 с.</mixed-citation><mixed-citation xml:lang="en">Roache P.J. Computational fluid dynamics. Hermosa publishers, 1972. 446 p.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Хокни Р., Иствуд Дж. Численное моделирование методом частиц / Пер. с англ. Липатова А.С. и Полюдова А.Н. М.: Мир, 1987. 638 с.</mixed-citation><mixed-citation xml:lang="en">Eastwood J.W., Hockney R.W. Computer Simulation using particles. New York, McGraw-Hill, 1981.</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Анучин В.Н., Гриценко В.А., Гриценко И.В. О структуре головной части интрузии в устойчиво стратифицированной жидкости // Океанология. 1990. Т. 30, № 2. С. 216–221.</mixed-citation><mixed-citation xml:lang="en">Anuchin V.N., Gritsenko V.A., Gritsenko I.V. On the structure of the head part of an intrusion in a stably stratified fluid. Okeanologiya. 1990, 30, 2, 216–221 (in Russian).</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
