TY - JOUR
T1 - Thermal Effect on the Bioconvection Dynamics of Gravitactic Microorganisms in a Rectangular Cavity
AU - Mil-Martínez, Rubén
AU - Vargas, René O.
AU - Escandón, Juan P.
AU - Pérez-Reyes, Ildebrando
AU - Turcio, Marcos
AU - Gómez-López, Aldo
AU - López-Serrano, Francisco
N1 - Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/3
Y1 - 2022/3
N2 - 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.
AB - 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.
KW - bioconvection
KW - dynamics of microorganisms
KW - gravitactic microorganisms
KW - numerical simulation
UR - http://www.scopus.com/inward/record.url?scp=85127613899&partnerID=8YFLogxK
U2 - 10.3390/fluids7030113
DO - 10.3390/fluids7030113
M3 - Artículo
AN - SCOPUS:85127613899
SN - 2311-5521
VL - 7
JO - Fluids
JF - Fluids
IS - 3
M1 - 113
ER -