Thermal Effect on the Bioconvection Dynamics of Gravitactic Microorganisms in a Rectangular Cavity
In this work, the dynamics of the bioconvection process of gravitactic microorganisms enclosed in a rectangular cavity, is analyzed. The dimensionless cell and energy conservation equations are coupled with the vorticity-stream function formulation. Then, the effects of the bioconvection Rayleigh nu...
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MDPI AG
2022-03-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/7/3/113 |
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| author | Rubén Mil-Martínez René O. Vargas Juan P. Escandón Ildebrando Pérez-Reyes Marcos Turcio Aldo Gómez-López Francisco López-Serrano |
| author_facet | Rubén Mil-Martínez René O. Vargas Juan P. Escandón Ildebrando Pérez-Reyes Marcos Turcio Aldo Gómez-López Francisco López-Serrano |
| author_sort | Rubén Mil-Martínez |
| collection | DOAJ |
| description | In this work, the dynamics of the bioconvection process of gravitactic microorganisms enclosed in a rectangular cavity, is analyzed. The dimensionless cell and energy conservation equations are coupled with the vorticity-stream function formulation. Then, the effects of the bioconvection Rayleigh number and the heating source on the dynamics of microorganisms are discussed. The results based in streamlines, concentration and temperature contours are obtained through numerical simulations considering eight different configurations of symmetrical and asymmetrical heat sources. It is concluded that microorganisms accumulate in the warmer regions and swim through the cooler regions to reach the surface. They form cells for each heat source, but at high concentrations, they form a single stable cell. The results presented here can be applied to control and to understand the dynamics of microorganisms with discrete heat sources. |
| first_indexed | 2024-03-09T19:51:18Z |
| format | Article |
| id | doaj.art-886e934416d54a0f8e6ff38cf72fb8c2 |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-09T19:51:18Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-886e934416d54a0f8e6ff38cf72fb8c22023-11-24T01:09:35ZengMDPI AGFluids2311-55212022-03-017311310.3390/fluids7030113Thermal Effect on the Bioconvection Dynamics of Gravitactic Microorganisms in a Rectangular CavityRubén Mil-Martínez0René O. Vargas1Juan P. Escandón2Ildebrando Pérez-Reyes3Marcos Turcio4Aldo Gómez-López5Francisco López-Serrano6Escuela Militar de Ingenieros, Universidad del Ejército y Fuerza Aérea, Av. Industria Militar No. 261, Col. Lomas de San Isidro, Naucalpan de Juárez 53960, Estado de México, MexicoDepartamento de Termofluidos, SEPI-ESIME Unidad Azcapotzalco, Instituto Politécnico Nacional, Av. de las Granjas No. 682, Col. Santa Catarina, Alcaldía Azcapotzalco 02250, Ciudad de México, MexicoDepartamento de Termofluidos, SEPI-ESIME Unidad Azcapotzalco, Instituto Politécnico Nacional, Av. de las Granjas No. 682, Col. Santa Catarina, Alcaldía Azcapotzalco 02250, Ciudad de México, MexicoFacultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario s/n, Chihuahua 31125, Chihuahua, MexicoDepartamento de Ciencias Básicas, Tecnológico Nacional de México Campus Querétaro, Av. Tecnológico s/n, Centro, Santiago de Querétaro 76000, Querétaro, MexicoDepartamento de Ingeniería, Sección Mecánica, FES Cuautitlán, Universidad Nacional Autónoma de México, Av. Teoloyucan Km 2.5, Col. San Sebastián Xhala, Cuautitlán Izcalli 54714, Estado de México, MexicoDepartamento de Ingeniería Química, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Ciudad de México, MexicoIn this work, the dynamics of the bioconvection process of gravitactic microorganisms enclosed in a rectangular cavity, is analyzed. The dimensionless cell and energy conservation equations are coupled with the vorticity-stream function formulation. Then, the effects of the bioconvection Rayleigh number and the heating source on the dynamics of microorganisms are discussed. The results based in streamlines, concentration and temperature contours are obtained through numerical simulations considering eight different configurations of symmetrical and asymmetrical heat sources. It is concluded that microorganisms accumulate in the warmer regions and swim through the cooler regions to reach the surface. They form cells for each heat source, but at high concentrations, they form a single stable cell. The results presented here can be applied to control and to understand the dynamics of microorganisms with discrete heat sources.https://www.mdpi.com/2311-5521/7/3/113bioconvectiongravitactic microorganismsdynamics of microorganismsnumerical simulation |
| spellingShingle | Rubén Mil-Martínez René O. Vargas Juan P. Escandón Ildebrando Pérez-Reyes Marcos Turcio Aldo Gómez-López Francisco López-Serrano Thermal Effect on the Bioconvection Dynamics of Gravitactic Microorganisms in a Rectangular Cavity Fluids bioconvection gravitactic microorganisms dynamics of microorganisms numerical simulation |
| title | Thermal Effect on the Bioconvection Dynamics of Gravitactic Microorganisms in a Rectangular Cavity |
| title_full | Thermal Effect on the Bioconvection Dynamics of Gravitactic Microorganisms in a Rectangular Cavity |
| title_fullStr | Thermal Effect on the Bioconvection Dynamics of Gravitactic Microorganisms in a Rectangular Cavity |
| title_full_unstemmed | Thermal Effect on the Bioconvection Dynamics of Gravitactic Microorganisms in a Rectangular Cavity |
| title_short | Thermal Effect on the Bioconvection Dynamics of Gravitactic Microorganisms in a Rectangular Cavity |
| title_sort | thermal effect on the bioconvection dynamics of gravitactic microorganisms in a rectangular cavity |
| topic | bioconvection gravitactic microorganisms dynamics of microorganisms numerical simulation |
| url | https://www.mdpi.com/2311-5521/7/3/113 |
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