A particularly unstable film
Analysis of the classic problem of shallow film flow on an inclined plane is revisited for a Brownian suspension. The particle phase, considered in a two-fluid model, is predicted to cause pronounced changes to the instability characteristics of the flow. These are due to an indirect effect of the n...
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| Veröffentlicht in: | Journal of fluid mechanics 2022-08, Vol.944, Article F1 |
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| container_title | Journal of fluid mechanics |
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| creator | Morris, Jeffrey F. |
| description | Analysis of the classic problem of shallow film flow on an inclined plane is revisited for a Brownian suspension. The particle phase, considered in a two-fluid model, is predicted to cause pronounced changes to the instability characteristics of the flow. These are due to an indirect effect of the non-Newtonian rheology, with the normal stresses causing migration and a viscosity stratification which strongly alters the base state from its Newtonian counterpart. Both the short- and long-wavelength inertial stability boundaries are altered, and, more strikingly, an instability at zero Reynolds number is found. |
| doi_str_mv | 10.1017/jfm.2022.370 |
| format | Article |
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The particle phase, considered in a two-fluid model, is predicted to cause pronounced changes to the instability characteristics of the flow. These are due to an indirect effect of the non-Newtonian rheology, with the normal stresses causing migration and a viscosity stratification which strongly alters the base state from its Newtonian counterpart. Both the short- and long-wavelength inertial stability boundaries are altered, and, more strikingly, an instability at zero Reynolds number is found.</description><identifier>ISSN: 0022-1120</identifier><identifier>EISSN: 1469-7645</identifier><identifier>DOI: 10.1017/jfm.2022.370</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Aquatic reptiles ; Flow stability ; Fluid flow ; Fluid mechanics ; Focus on Fluids ; Migrations ; Reynolds number ; Rheological properties ; Rheology ; Stratification ; Two fluid models ; Velocity ; Viscosity ; Wavelength</subject><ispartof>Journal of fluid mechanics, 2022-08, Vol.944, Article F1</ispartof><rights>The Author(s), 2022. 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Both the short- and long-wavelength inertial stability boundaries are altered, and, more strikingly, an instability at zero Reynolds number is found.</description><subject>Aquatic reptiles</subject><subject>Flow stability</subject><subject>Fluid flow</subject><subject>Fluid mechanics</subject><subject>Focus on Fluids</subject><subject>Migrations</subject><subject>Reynolds number</subject><subject>Rheological properties</subject><subject>Rheology</subject><subject>Stratification</subject><subject>Two fluid 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| fulltext | fulltext |
| identifier | ISSN: 0022-1120 |
| ispartof | Journal of fluid mechanics, 2022-08, Vol.944, Article F1 |
| issn | 0022-1120 1469-7645 |
| language | eng |
| recordid | cdi_proquest_journals_2679176408 |
| source | Cambridge Journals |
| subjects | Aquatic reptiles Flow stability Fluid flow Fluid mechanics Focus on Fluids Migrations Reynolds number Rheological properties Rheology Stratification Two fluid models Velocity Viscosity Wavelength |
| title | A particularly unstable film |
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