Convection of Strong Stratified Colloidal Suspension
The сonvective instability and nonlinear flows of a colloidal suspension in horizontal layer are studied in the case when the layer height is comparable with the sedimentation length of nanoparticles. The numerical analysis is carried out within the Boussinesq approximation on the basis of a modifie...
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| Veröffentlicht in: | Microgravity science and technology 2019-10, Vol.31 (5), p.517-525 |
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| creator | Cherepanov, I. N. Smorodin, B. L. |
| description | The сonvective instability and nonlinear flows of a colloidal suspension in horizontal layer are studied in the case when the layer height is comparable with the sedimentation length of nanoparticles. The numerical analysis is carried out within the Boussinesq approximation on the basis of a modified model that takes into account the dependence of a thermal diffusion flux on the local value of impurity concentration. The stability borders and characteristics of critical disturbances are determined depending on the sedimentation length for colloidal mixture. The bifurcation phenomena and nonlinear evolution of spatiotemporal patterns that develop in the colloid suspension are modeled and discussed, paying special attention to the combined effects of gravity sedimentation, thermal diffusion with negative separation ratio and convection. The nonlinear convection patterns demonstrate the traveling wave dynamics. It is found the new traveling wave solution, which is characterized by an anharmonic distribution of the vertical velocity through the layer. |
| doi_str_mv | 10.1007/s12217-019-09726-6 |
| format | Article |
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The nonlinear convection patterns demonstrate the traveling wave dynamics. It is found the new traveling wave solution, which is characterized by an anharmonic distribution of the vertical velocity through the layer.</description><identifier>ISSN: 0938-0108</identifier><identifier>EISSN: 1875-0494</identifier><identifier>DOI: 10.1007/s12217-019-09726-6</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Aerospace Technology and Astronautics ; Anharmonicity ; Bifurcations ; Boussinesq approximation ; Classical and Continuum Physics ; Colloids ; Convection ; Convection patterns ; Dependence ; Diffusion ; Engineering ; Gravity effects ; Nanoparticles ; Numerical analysis ; Original Article ; Sedimentation ; Sedimentation & deposition ; Space Exploration and Astronautics ; Space Sciences (including Extraterrestrial Physics ; Stability ; Thermal diffusion ; Thirty Years of Microgravity Research - A Topical Collection Dedicated to J. C. 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L.</creatorcontrib><title>Convection of Strong Stratified Colloidal Suspension</title><title>Microgravity science and technology</title><addtitle>Microgravity Sci. Technol</addtitle><description>The сonvective instability and nonlinear flows of a colloidal suspension in horizontal layer are studied in the case when the layer height is comparable with the sedimentation length of nanoparticles. The numerical analysis is carried out within the Boussinesq approximation on the basis of a modified model that takes into account the dependence of a thermal diffusion flux on the local value of impurity concentration. The stability borders and characteristics of critical disturbances are determined depending on the sedimentation length for colloidal mixture. The bifurcation phenomena and nonlinear evolution of spatiotemporal patterns that develop in the colloid suspension are modeled and discussed, paying special attention to the combined effects of gravity sedimentation, thermal diffusion with negative separation ratio and convection. The nonlinear convection patterns demonstrate the traveling wave dynamics. 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L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-2cc3c370e15cd924c52c90570c95b0c4e64702007926f0ba3c2a3c72b80c290c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Aerospace Technology and Astronautics</topic><topic>Anharmonicity</topic><topic>Bifurcations</topic><topic>Boussinesq approximation</topic><topic>Classical and Continuum Physics</topic><topic>Colloids</topic><topic>Convection</topic><topic>Convection patterns</topic><topic>Dependence</topic><topic>Diffusion</topic><topic>Engineering</topic><topic>Gravity effects</topic><topic>Nanoparticles</topic><topic>Numerical analysis</topic><topic>Original Article</topic><topic>Sedimentation</topic><topic>Sedimentation & deposition</topic><topic>Space Exploration and Astronautics</topic><topic>Space Sciences (including Extraterrestrial Physics</topic><topic>Stability</topic><topic>Thermal diffusion</topic><topic>Thirty Years of Microgravity Research - A Topical Collection Dedicated to J. 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N.</au><au>Smorodin, B. L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Convection of Strong Stratified Colloidal Suspension</atitle><jtitle>Microgravity science and technology</jtitle><stitle>Microgravity Sci. Technol</stitle><date>2019-10-01</date><risdate>2019</risdate><volume>31</volume><issue>5</issue><spage>517</spage><epage>525</epage><pages>517-525</pages><issn>0938-0108</issn><eissn>1875-0494</eissn><abstract>The сonvective instability and nonlinear flows of a colloidal suspension in horizontal layer are studied in the case when the layer height is comparable with the sedimentation length of nanoparticles. The numerical analysis is carried out within the Boussinesq approximation on the basis of a modified model that takes into account the dependence of a thermal diffusion flux on the local value of impurity concentration. The stability borders and characteristics of critical disturbances are determined depending on the sedimentation length for colloidal mixture. The bifurcation phenomena and nonlinear evolution of spatiotemporal patterns that develop in the colloid suspension are modeled and discussed, paying special attention to the combined effects of gravity sedimentation, thermal diffusion with negative separation ratio and convection. The nonlinear convection patterns demonstrate the traveling wave dynamics. It is found the new traveling wave solution, which is characterized by an anharmonic distribution of the vertical velocity through the layer.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s12217-019-09726-6</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-7734-1482</orcidid></addata></record> |
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| subjects | Aerospace Technology and Astronautics Anharmonicity Bifurcations Boussinesq approximation Classical and Continuum Physics Colloids Convection Convection patterns Dependence Diffusion Engineering Gravity effects Nanoparticles Numerical analysis Original Article Sedimentation Sedimentation & deposition Space Exploration and Astronautics Space Sciences (including Extraterrestrial Physics Stability Thermal diffusion Thirty Years of Microgravity Research - A Topical Collection Dedicated to J. C. Legros Traveling waves Vertical distribution Vertical velocities |
| title | Convection of Strong Stratified Colloidal Suspension |
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