Bioconvection in oxytactic microorganism-saturated porous square enclosure with thermal radiation impact

Balla, Chandra Shekar; Alluguvelli, Ramesh; Kishan, N.; Rashad, A. M.; Abdelrahman, Z. M. A.

doi:10.1007/s10973-019-09009-7

Cited by 45 publications

(13 citation statements)

References 28 publications

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“…Based on these considerations, the dimensionless governing partial differential equations for MHD thermo-bioconvection of the present study in Cartesian coordinate systems (Sheremet and Pop, 2014;Ahmed et al, 2018;Balla et al, 2018;Balla et al, 2020;Ahmed et al, 2018), Rashad et al, 2018;Mansour et al, 2019) yield as:…”

Section: Problem Description and Governing Equationsmentioning

confidence: 99%

Thermo-bioconvection of oxytactic microorganisms in porous media in the presence of magnetic field

Biswas

Datta

Manna

et al. 2020

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Purpose This study aims to explore magnetohydrodynamic (MHD) thermo-bioconvection of oxytactic microorganisms in multi-physical directions addressing thermal gradient, lid motion, porous substance and magnetic field collectively using a typical differentially heated two-sided lid-driven cavity. The consequences of a range of pertinent parameters on the flow structure, temperature, oxygen isoconcentration and microorganisms’ isoconcentration are examined and explained in great detail. Design/methodology/approach Two-dimensional governing equations in a two-sided lid-driven porous cavity heated differentially and packed with oxytactic microorganisms under the influence of the magnetic field are solved numerically using the finite volume method-based computational fluid dynamics code. The evolved flow physics is analyzed assuming a steady laminar incompressible Newtonian flow within the validity of the Boussinesq approximation. The transport of oxytactic microorganisms is formulated by augmenting the continuum model. Findings The mechanisms involved with MHD-mixed thermo-bioconvection could have potential benefits for industrial exploitation. The distributions of fluid flow, temperature, oxygen and motile microorganisms are markedly modified with the change of convection regime. Both speed and direction of the translating walls significantly influence the concentration of the motile microorganisms. The concentration of oxygen and motile microorganisms is found to be higher at the upper portion of the cavity. The overall patterns of the fluid flow, temperature and the oxygen and microorganism distributions are markedly affected by the increase of magnetic field strength. Research limitations/implications The concept of the present study could be extended to other areas of bioconvection in the presence of gravity, light or chemical attraction. Practical implications The findings of the present study could be used to multi-physical applications like biomicrosystems, pollutant dispersion in aquifers, chemical catalytic converters, geothermal energy usage, petroleum oil reservoirs, enhanced oil recovery, fuel cells, thermal energy storage and others. Originality/value The MHD-mixed thermo-bioconvection of oxytactic microorganisms is investigated under different parametric conditions. The effect of pertinent parameters on the heat and mass transfers are examined using the Nusselt number and Sherwood number.

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Section: Problem Description and Governing Equationsmentioning

confidence: 99%

Thermo-bioconvection of oxytactic microorganisms in porous media in the presence of magnetic field

Biswas

Datta

Manna

et al. 2020

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“…Thus, in the modern era, the combination of both bioconvection and nanofluid play crucial roles in many applications in industries and medical sciences. Some of the researchers had paid their attention to exploring the beneficial aspects of nanofluid-based thermo-bioconvection with a suspension of oxytactic microorganisms in a clear domain (Kuznetsov, 2011) and also in a porous domain (Balla et al , 2018; Shaw et al , 2014; Bég et al , 2013) following the numerical approach.…”

Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamic bioconvection of oxytactic microorganisms in porous media saturated with Cu–water nanofluid

Biswas

Manna

Mandal

et al. 2021

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Purpose The purpose of this study is to address magnetohydrodynamic (MHD) bioconvection caused by the swimming of oxytactic microorganisms in a linearly heated square cavity filled with porous media and Cu–water nanofluid. The effects of different multiphysical aspects are demonstrated using local distributions as well as global quantities for fluid flow, temperature, oxygen concentration and microorganisms population. Design/methodology/approach The coupled transport equations are converted into the nondimensional partial differential equations, which are solved numerically using a finite volume-based computing code. The flow of Cu–water nanofluid through the pores of porous media is formulated following the Brinkman–Forchheimer–Darcy model. The swimming of oxytactic microorganisms is handled following a continuum model. Findings The analysis of transport phenomena of bioconvection is performed in a linearly heated porous enclosure containing Cu–water nanofluid and oxytactic microorganisms under the influence of magnetic fields. The application of such a system could have potential impacts in diverse fields of engineering and science. The results show that the flow and temperature distribution along with the isoconcentrations of oxygen and microorganisms is markedly affected by the involved governing parameters. Research limitations/implications Similar study of bioconvection could be extended further considering thermal radiation, chemical attraction, gravity and light. Practical implications The outcomes of this investigation could be used in diverse fields of multiphysical applications, such as in food industries, chemical processing equipment, fuel cell technology and enhanced oil recovery. Originality/value The insight of the linear heating profile reveals a special attribute of simultaneous heating and cooling zones along the heated side. With such an interesting feature, the MHD bioconvection of oxytactic microorganisms in nanofluid-filled porous substance is not reported so far.

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“…They concluded that the volume fraction of nanoparticles and profiles of motile microorganisms have an inverse relation with Prandtl number and Brownian motion parameter. Valuable investigation can be studied in the following papers (Hayat et al , 2019; Khan et al , 2017c; Khan et al , 2020c; Nayak et al , 2020; Khan et al , 2020b; Khan et al , 2020a; Sheremet et al , 2019; Chandra Sekhar et al , 2017; Balla et al , 2020; Balla and Naikoti, 2016, 2015; Balla et al , 2019b).…”

Section: Introductionmentioning

confidence: 99%

Investigation of magnetohydrodynamic nanofluid flow contain motile oxytactic microorganisms over rotating cone

Mogharrebi

Ganji

Hosseinzadeh

et al. 2021

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Purpose The purpose of the study is to indicate a three-dimensional convective heat transfer properties evaluation of magnetohydrodynamics nanofluid flow, comprising motile oxytactic microorganisms and nanoparticles, passing through a rotating cone. Design/methodology/approach The imposed technique for solving the governing equations is the Runge–Kutta fifth-order method. The main point of this survey is to diagnosis the influence of diverse factors on velocity, temperature distributions and concentration profile. Furthermore, appending the magnetic field, thermal radiation and viscous dissipation in calculations; also, simultaneous involvement of heat absorption and excretion has been represented as novelties. Findings The results elucidate that by changing the Peclet number from 1 to 2, the dimensionless concentration of the microorganisms has been diminished by about 34.37%. In addition, variation of the magnetic parameter from 0 to 1 has been resulted in reducing the temperature distribution by about 3.11%. Originality/value Recently, attention has been absorbed to adding the motile microorganisms to nanofluid for enhancement of heat transfer and avoiding aggregation of particles. In this regard, the hydrothermal flow of microorganisms has been investigated in this study.

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Bioconvection in oxytactic microorganism-saturated porous square enclosure with thermal radiation impact

Cited by 45 publications

References 28 publications

Thermo-bioconvection of oxytactic microorganisms in porous media in the presence of magnetic field

Thermo-bioconvection of oxytactic microorganisms in porous media in the presence of magnetic field

Magnetohydrodynamic bioconvection of oxytactic microorganisms in porous media saturated with Cu–water nanofluid

Investigation of magnetohydrodynamic nanofluid flow contain motile oxytactic microorganisms over rotating cone

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