Journal
PLOS ONE
Volume 17, Issue 5, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0265026
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Funding
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea government (MOTIE) [20192010107020]
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This study investigates the bioconvection flow of tiny fluid carrying nanoparticles between two concentric cylinders and focuses on the contribution of Lorenz force to the bioconvection thermal transport of the particles. The results show that the flow velocity can be controlled externally through the magnetic field, and an increase in Schmidt numbers leads to higher nanoparticle concentration and motile density.
The bioconvection flow of tiny fluid conveying the nanoparticles has been investigated between two concentric cylinders. The contribution of Lorenz force is also focused to inspect the bioconvection thermal transport of tiny particles. The tiny particles are assumed to flow between two concentric cylinders of different radii. The first cylinder remains at rest while flow is induced due to second cylinder which rotates with uniform velocity. Furthermore, the movement of tiny particles follows the principle of thermophoresis and Brownian motion as a part of thermal and mass gradient. Similarly, the gyro-tactic microorganisms swim in the nanofluid as a response to the density gradient and constitute bio-convection. The problem is modeled by using the certain laws. The numerical outcomes are computed by using RKF-45 method. The graphical simulations are performed for flow parameters with specific range like 1 <= Re<5, 1 <= Ha <= 5, 0.5 <= Nt <= 2.5, 1 <= Nb <= 3, 0.2 <= Sc <= 1.8, 0.2 <= Pe <= 1.0 and 0.2 <=Omega <= 1.0. is observed that the flow velocity decreases with the increase in the Hartmann number that signifies the magnetic field. This outcome indicates that the flow velocity can be controlled externally through the magnetic field. Also, the increase in the Schmidt numbers increases the nanoparticle concentration and the motile density.
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