Analysis and Discussion of Two-Way Coupling Effects in Particle-Laden Turbulent Channel Flow
This paper studies the turbulence modification caused by the presence of solid particles in fully developed channel flow by means of the point particle Direct Numerical Simulations (DNS) approach. Inertial particles much smaller than the smallest vortical flow structures are considered, maintaining...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2022-11-01
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| Series: | Ingeniería e Investigación |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/ingeinv/article/view/87275 |
| _version_ | 1797905424111894528 |
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| author | Santiago Laín Daniel Ortíz Jesús Antonio Ramirez Carlos Alberto Duque |
| author_facet | Santiago Laín Daniel Ortíz Jesús Antonio Ramirez Carlos Alberto Duque |
| author_sort | Santiago Laín |
| collection | DOAJ |
| description | This paper studies the turbulence modification caused by the presence of solid particles in fully developed channel flow by means of the point particle Direct Numerical Simulations (DNS) approach. Inertial particles much smaller than the smallest vortical flow structures are considered, maintaining a volume fraction of the order , where inter-particle collisions are rare and have nearly no influence on flow development. To avoid concurrent effects that could mask the analysis of fluid turbulence interaction, gravity is not included in the study, and particle-smooth wall collisions are modelled as ideal reflections. The alteration of fluid turbulence dynamics by the particles is illustrated and discussed, providing an overview of the fluid-particle interaction phenomena occurring at both microscopic and macroscopic flow levels. Finally, the relation of such phenomena with drag-reducing effects by particles is demonstrated. |
| first_indexed | 2024-04-10T10:06:13Z |
| format | Article |
| id | doaj.art-e100f2525bc044d99fdc3a36bf8685b5 |
| institution | Directory Open Access Journal |
| issn | 0120-5609 2248-8723 |
| language | English |
| last_indexed | 2024-04-10T10:06:13Z |
| publishDate | 2022-11-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Ingeniería e Investigación |
| spelling | doaj.art-e100f2525bc044d99fdc3a36bf8685b52023-02-16T01:05:10ZengUniversidad Nacional de ColombiaIngeniería e Investigación0120-56092248-87232022-11-01431e87275e8727510.15446/ing.investig.8727569916Analysis and Discussion of Two-Way Coupling Effects in Particle-Laden Turbulent Channel FlowSantiago Laín0https://orcid.org/0000-0002-0269-2608Daniel Ortíz1https://orcid.org/0000-0003-1989-7121Jesús Antonio Ramirez2Carlos Alberto Duque3https://orcid.org/0000-0002-6376-5081Depto. Energética y Mecánica. Universidad Autonóma de Occidente, Cali (Colombia)Universidad Autónoma de OccidenteUniversidad Santo TomásUniversidad Nacional de ColombiaThis paper studies the turbulence modification caused by the presence of solid particles in fully developed channel flow by means of the point particle Direct Numerical Simulations (DNS) approach. Inertial particles much smaller than the smallest vortical flow structures are considered, maintaining a volume fraction of the order , where inter-particle collisions are rare and have nearly no influence on flow development. To avoid concurrent effects that could mask the analysis of fluid turbulence interaction, gravity is not included in the study, and particle-smooth wall collisions are modelled as ideal reflections. The alteration of fluid turbulence dynamics by the particles is illustrated and discussed, providing an overview of the fluid-particle interaction phenomena occurring at both microscopic and macroscopic flow levels. Finally, the relation of such phenomena with drag-reducing effects by particles is demonstrated.https://revistas.unal.edu.co/index.php/ingeinv/article/view/87275direct numerical simulationparticle-laden channel flowturbulencetwo-way coupling |
| spellingShingle | Santiago Laín Daniel Ortíz Jesús Antonio Ramirez Carlos Alberto Duque Analysis and Discussion of Two-Way Coupling Effects in Particle-Laden Turbulent Channel Flow Ingeniería e Investigación direct numerical simulation particle-laden channel flow turbulence two-way coupling |
| title | Analysis and Discussion of Two-Way Coupling Effects in Particle-Laden Turbulent Channel Flow |
| title_full | Analysis and Discussion of Two-Way Coupling Effects in Particle-Laden Turbulent Channel Flow |
| title_fullStr | Analysis and Discussion of Two-Way Coupling Effects in Particle-Laden Turbulent Channel Flow |
| title_full_unstemmed | Analysis and Discussion of Two-Way Coupling Effects in Particle-Laden Turbulent Channel Flow |
| title_short | Analysis and Discussion of Two-Way Coupling Effects in Particle-Laden Turbulent Channel Flow |
| title_sort | analysis and discussion of two way coupling effects in particle laden turbulent channel flow |
| topic | direct numerical simulation particle-laden channel flow turbulence two-way coupling |
| url | https://revistas.unal.edu.co/index.php/ingeinv/article/view/87275 |
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