<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">phmath</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Государственного университета просвещения. Серия: Физика-Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Federal State University of Education. Series: Physics and Mathematics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-5083</issn><issn pub-type="epub">2949-5067</issn><publisher><publisher-name>Federal State University of Education</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18384/2310-7251-2018-4-178-190</article-id><article-id custom-type="elpub" pub-id-type="custom">phmath-552</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>РАЗДЕЛ I. ФИЗИКА</subject></subj-group></article-categories><title-group><article-title>РЕЗОНАНСНЫЙ ГРАВИТАЦИОННЫЙ ПОТОК СТЕПЕННОЙ ЖИДКОСТИ НАД СКОЛЬЗКОЙ ТОПОГРАФИЧЕСКОЙ ПОДЛОЖКОЙ</article-title><trans-title-group xml:lang="en"><trans-title>A RESONANT GRAVITY-DRIVEN FLOW OF A POWER-LAW FLUID OVER A SLIPPERY TOPOGRAPHY SUBSTRATE</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>Селим</surname><given-names>Рами Салах</given-names></name><name name-style="western" xml:lang="en"><surname>Selim</surname><given-names>Salah Saber</given-names></name></name-alternatives><email xlink:type="simple">selim.rs@phystech.edu</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский физико-технический институт (государственный университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Institute of Physics and Technology (State University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>20</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>4</issue><fpage>178</fpage><lpage>190</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Селим Р.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Селим Р.С.</copyright-holder><copyright-holder xml:lang="en">Selim S.S.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://www.physmathmgou.ru/jour/article/view/552">https://www.physmathmgou.ru/jour/article/view/552</self-uri><abstract><p>Исследовано гравитационное течение степенной жидкости над скользкой топографической подложкой. Поток жидкости, обусловленный гравитацией, предполагается устойчивым и ограниченным пределом малой амплитуды рифления стенки. В качестве аналитического подхода мы применяем интегральный метод пограничного слоя Кармана-Полхаузена и выводим асимптотическое уравнение, справедливое для довольно тонких плёнок. Полученные результаты подтверждают мнение о том, что резонанс связан с взаимодействием волновой плёнки с капиллярно-гравитационными волнами, движущимися против среднего направления потока. Основным фактором в работе является влияние условия скольжения на резонансные явления при различных степенных показателях n. Исследовано влияние различных параметров на свойства течения и резонансное число Рейнольдса через степенной индекс n.</p></abstract><trans-abstract xml:lang="en"><p>The gravity-driven flow of a power-law fluid over a slippery topography substrate is studied. The fluid flow, due to the gravity, is assumed to be steady and confined to the limit of small amplitude of the wall corrugation. As an analytic approach, we apply the Karman-Pohlhausen integral boundary-layer method and derive an asymptotic equation valid for rather thin films. Our results support the view that the resonance is associated with an interaction of the undulated film with capillary-gravity waves travelling against the mean flow direction in the linear case. The influence of the slip condition on the linear resonance phenomena for different power-law indices n is the main factor in this work.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Длинная волна</kwd><kwd>скользкая волнистая стенка</kwd><kwd>степенной закон жидкости</kwd><kwd>линейный резонанс</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Amaouche M., Djema A., Bourdache L. A modified Shakdov’s model for thin film flow of a power-law fluid over an inclined surface // Comptes Rendus Mйcanique. 2009. Vol. 337. Iss. 1. P. 48-52.</mixed-citation><mixed-citation xml:lang="en">Amaouche M., Djema A., Bourdache L. A modified Shakdov’s model for thin film flow of a power-law fluid over an inclined surface // Comptes Rendus Mйcanique. 2009. Vol. 337. Iss. 1. P. 48-52.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Argyriadi K., Vlachogiannis M., Bontozoglou V. Experimental study of inclined film flow along periodic corrugations: the effect of wall steepness // Physics of Fluids. 2006. Vol. 18. Iss. 1. P. 012102.</mixed-citation><mixed-citation xml:lang="en">Argyriadi K., Vlachogiannis M., Bontozoglou V. Experimental study of inclined film flow along periodic corrugations: the effect of wall steepness // Physics of Fluids. 2006. Vol. 18. Iss. 1. P. 012102.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Beavers G.S., Joseph D.D. Boundary conditions at a naturally permeable wall // Journal of Fluid Mechanics. 1967. Vol. 30. Iss. 1. P. 197-207.</mixed-citation><mixed-citation xml:lang="en">Beavers G.S., Joseph D.D. Boundary conditions at a naturally permeable wall // Journal of Fluid Mechanics. 1967. Vol. 30. Iss. 1. P. 197-207.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Berezin A.Yu., Hutter K., Spodareva L.A. Stability analysis of gravity driven shear flow with free surface for power-law fluids // Archive of Applied Mechanics. 1998. Vol. 68. Iss. 3-4. P. 169-178.</mixed-citation><mixed-citation xml:lang="en">Berezin A.Yu., Hutter K., Spodareva L.A. Stability analysis of gravity driven shear flow with free surface for power-law fluids // Archive of Applied Mechanics. 1998. Vol. 68. Iss. 3-4. P. 169-178.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Dandapat B.S., Mukhopadhyay A. Waves on a film of power-law fluid flowing down an inclined plane at moderate Reynolds number // Fluid Dynamics Research. 2001. Vol. 29. Iss. 3. P. 199-220.</mixed-citation><mixed-citation xml:lang="en">Dandapat B.S., Mukhopadhyay A. Waves on a film of power-law fluid flowing down an inclined plane at moderate Reynolds number // Fluid Dynamics Research. 2001. Vol. 29. Iss. 3. P. 199-220.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Gupta A.S. Stability of a visco-elastic liquid film flowing down an inclined plane // Journal of Fluid Mechanics. 1967. Vol. 28. Iss. 1. P. 17-28.</mixed-citation><mixed-citation xml:lang="en">Gupta A.S. Stability of a visco-elastic liquid film flowing down an inclined plane // Journal of Fluid Mechanics. 1967. Vol. 28. Iss. 1. P. 17-28.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Nonlinear resonance in viscous films on inclined wavy planes / Heining C., Bontozoglou V., Aksel N., Wierschem A. // International Journal of Multiphase Flow. 2009. Vol. 35. Iss. 1. P. 78-90.</mixed-citation><mixed-citation xml:lang="en">Nonlinear resonance in viscous films on inclined wavy planes / Heining C., Bontozoglou V., Aksel N., Wierschem A. // International Journal of Multiphase Flow. 2009. Vol. 35. Iss. 1. P. 78-90.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Heining C., Aksel N. Bottom reconstruction in thin-film flow over topography: steady solution and linear stability // Physics of Fluids. 2009. Vol. 21. Iss. 8. P. 083605.</mixed-citation><mixed-citation xml:lang="en">Heining C., Aksel N. Bottom reconstruction in thin-film flow over topography: steady solution and linear stability // Physics of Fluids. 2009. Vol. 21. Iss. 8. P. 083605.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Heining C., Aksel N. Effects of inertia and surface tension on a power-law fluid flowing down a wavy incline // International Journal of Multiphase Flow. 2010. Vol. 36. Iss. 11-12. P. 847-857.</mixed-citation><mixed-citation xml:lang="en">Heining C., Aksel N. Effects of inertia and surface tension on a power-law fluid flowing down a wavy incline // International Journal of Multiphase Flow. 2010. Vol. 36. Iss. 11-12. P. 847-857.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Manevich A.I, Manevitch L.I. The mechanics of nonlinear systems with internal resonances. London: Imperial College Press, P. 3-5.</mixed-citation><mixed-citation xml:lang="en">Manevich A.I, Manevitch L.I. The mechanics of nonlinear systems with internal resonances. London: Imperial College Press, P. 3-5.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Matthews M.T., James M.H. A note on the boundary layer equations with linear slip boundary condition // Applied Mathematics Letters. 2008. Vol. 21. Iss. 8. P. 810-813.</mixed-citation><mixed-citation xml:lang="en">Matthews M.T., James M.H. A note on the boundary layer equations with linear slip boundary condition // Applied Mathematics Letters. 2008. Vol. 21. Iss. 8. P. 810-813.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Ogden K.A., D’Alessio S.J.D., Pascal J.P. Gravity-driven flow over heated, porous, wavy surfaces // Physics of Fluids. 2011. Vol. 23. Iss. 12. P. 122102.</mixed-citation><mixed-citation xml:lang="en">Ogden K.A., D’Alessio S.J.D., Pascal J.P. Gravity-driven flow over heated, porous, wavy surfaces // Physics of Fluids. 2011. Vol. 23. Iss. 12. P. 122102.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Oron A., Heining C. Weighted-residual integral boundary-layer model for the nonlinear dynamics of thin liquid films falling on an undulating vertical wall // Physics of Fluids. 2008. Vol. 20. Iss. 8. P. 082102.</mixed-citation><mixed-citation xml:lang="en">Oron A., Heining C. Weighted-residual integral boundary-layer model for the nonlinear dynamics of thin liquid films falling on an undulating vertical wall // Physics of Fluids. 2008. Vol. 20. Iss. 8. P. 082102.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Pascal J.P. Linear stability of fluid flow down a porous inclined plane // Journal of Physics D: Applied Physics. 1999. Vol. 32. No. 4. P. 417-422.</mixed-citation><mixed-citation xml:lang="en">Pascal J.P. Linear stability of fluid flow down a porous inclined plane // Journal of Physics D: Applied Physics. 1999. Vol. 32. No. 4. P. 417-422.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Pozrikidis C. Effect of surfactants on film flow down a periodic wall // Journal of Fluid Mechanics. 2003. Vol. 496. P. 105-127.</mixed-citation><mixed-citation xml:lang="en">Pozrikidis C. Effect of surfactants on film flow down a periodic wall // Journal of Fluid Mechanics. 2003. Vol. 496. P. 105-127.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Ruyer-Quil C., Manneville P. Improved modeling of flow down inclined planes // The European Physical Journal B - Condensed Matter and Complex Systems. 2000. Vol. 15. Iss. 2. P. 357-369.</mixed-citation><mixed-citation xml:lang="en">Ruyer-Quil C., Manneville P. Improved modeling of flow down inclined planes // The European Physical Journal B - Condensed Matter and Complex Systems. 2000. Vol. 15. Iss. 2. P. 357-369.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Samanta A., Ruyer-Quil C., Goyeau B. A falling film down a slippery inclined plane // Journal of Fluid Mechanics. 2011. Vol. 684. P. 353-383.</mixed-citation><mixed-citation xml:lang="en">Samanta A., Ruyer-Quil C., Goyeau B. A falling film down a slippery inclined plane // Journal of Fluid Mechanics. 2011. Vol. 684. P. 353-383.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Saprykin S., Koopmans R.J., Kalliadasis S. Free-surface thin-film flows over topography: influence of inertia and viscoelasticity // Journal of Fluid Mechanics. 2007. Vol. 578. P. 271-293.</mixed-citation><mixed-citation xml:lang="en">Saprykin S., Koopmans R.J., Kalliadasis S. Free-surface thin-film flows over topography: influence of inertia and viscoelasticity // Journal of Fluid Mechanics. 2007. Vol. 578. P. 271-293.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Thiele U., Goyeau B., Velarde M.G. Stability analysis of thin film flow along a heated porous wall // Physics of Fluids. 2009. Vol. 21. Iss. 1. P. 014103.</mixed-citation><mixed-citation xml:lang="en">Thiele U., Goyeau B., Velarde M.G. Stability analysis of thin film flow along a heated porous wall // Physics of Fluids. 2009. Vol. 21. Iss. 1. P. 014103.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Trifonov Yu.Ya. Stability of a viscous liquid film flowing down a periodic surface // International Journal of Multiphase Flow. 2007. Vol. 33. P. 1186-1204.</mixed-citation><mixed-citation xml:lang="en">Trifonov Yu.Ya. Stability of a viscous liquid film flowing down a periodic surface // International Journal of Multiphase Flow. 2007. Vol. 33. P. 1186-1204.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Electrified viscous thin film flow over topography / Tseluiko D., Blyth M.G., Papageorgiou D.T., Vanden-Broeck J.M. // Journal of Fluid Mechanics. 2008. Vol. 597. P. 449-475.</mixed-citation><mixed-citation xml:lang="en">Electrified viscous thin film flow over topography / Tseluiko D., Blyth M.G., Papageorgiou D.T., Vanden-Broeck J.M. // Journal of Fluid Mechanics. 2008. Vol. 597. P. 449-475.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Weinstein S.J., Ruschak K.J. Coating flows // Annual Review of Fluid Mechanics. 2004. Vol. 36. P. 29-53.</mixed-citation><mixed-citation xml:lang="en">Weinstein S.J., Ruschak K.J. Coating flows // Annual Review of Fluid Mechanics. 2004. Vol. 36. P. 29-53.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Wierschem A., Aksel N. Hydraulic jumps and standing waves in gravity-driven flows of viscous liquids in wavy open channels // Physics of Fluids. 2004. Vol. 16. Iss. 11. P. 3868-3877.</mixed-citation><mixed-citation xml:lang="en">Wierschem A., Aksel N. Hydraulic jumps and standing waves in gravity-driven flows of viscous liquids in wavy open channels // Physics of Fluids. 2004. Vol. 16. Iss. 11. P. 3868-3877.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Wierschem A., Aksel N. Influence of inertia on eddies created in films creeping over strongly undulated substrates // Physics of Fluids. 2004. Vol. 16. Iss. 12. P. 4566-4574.</mixed-citation><mixed-citation xml:lang="en">Wierschem A., Aksel N. Influence of inertia on eddies created in films creeping over strongly undulated substrates // Physics of Fluids. 2004. Vol. 16. Iss. 12. P. 4566-4574.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Linear resonance in viscous films on inclined wavy planes / Wierschem A., Bontozoglou V., Heining C., Uecker H., Aksel N. // International Journal of Multiphase Flow. 2008. Vol. 34. Iss. 6. P. 580-589.</mixed-citation><mixed-citation xml:lang="en">Linear resonance in viscous films on inclined wavy planes / Wierschem A., Bontozoglou V., Heining C., Uecker H., Aksel N. // International Journal of Multiphase Flow. 2008. Vol. 34. Iss. 6. P. 580-589.</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>
