Bioconvection flow in accelerated couple stress nanoparticles with activation energy: bio-fuel applications

Abstract

On the account of significance of bioconvection in biotechnology and several biological systems, valuable contributions have been performed by scientists in current decade. In current framework, a theoretical bioconvection model is constituted to examine the analyzed the thermally developed magnetized couple stress nanoparticles flow by involving narrative flow characteristics namely activation energy, chemical reaction and radiation features. The accelerated flow is organized on the periodically porous stretched configuration. The heat performances are evaluated via famous Buongiorno’s model which successfully reflects the important features of thermophoretic and Brownian motion. The composed fluid model is based on the governing equations of momentum, energy, nanoparticles concentration and motile microorganisms. The dimensionless problem has been solved analytically via homotopic procedure where the convergence of results is carefully examined. The interesting graphical description for the distribution of velocity, heat transfer of nanoparticles, concentration pattern and gyrotactic microorganism significance are presented with relevant physical significance. The variation in wall shear stress is also graphically underlined which shows an interesting periodic oscillation near the flow domain. The numerical interpretation for examining the heat mass and motile density transfer rate is presented in tubular form.

Overlapping grid spectral collocation approach for electrical MHD bioconvection Darcy–Forchheimer flow of a Carreau–Yasuda nanoliquid over a periodically accelerating surface

“…Thus, inclusion of bioconvection has a tendency of minimizing the velocity field remarkably. Similar behavior of buoyancy ratio and bioconvection Rayleigh parameters was noted by Khan et al 55,59 who neglected porous medium and electric field features. the temperature, hence leading to a thin thermal boundary layer.…”

“…The flow equations are transmuted into nondimensional form by using the following variables: [55][56][57][58][59] x y t…”

“…MHD bioconvection flow of micropolar nanoliquid over a periodically accelerating surface with AE was examined by Abdelmalek et al 58 They found that motile microorganisms distribution diminishes with an augmentation in temperature variance parameter and bioconvection Peclet number. Very recently, Khan et al 59 analyzed MHD bioconvection flow of couple stress nanofluid over a periodically porous stretching surface with AE and chemical reaction. Their results showed that nanoparticle temperature enhances with Brownian motion and thermophoresis parameter.…”

Size Effect of Fe3O4 Nanoparticles on Magnetism and Dispersion Stability of Magnetic Nanofluid

“…The nanofluids are colloidal suspensions composed of various nanoparticles (Al 2 O 3 , TiO 2 , ZnO, CuO, SiO 2 , Fe 3 O 4 , etc.) (Shahrul et al, 2016;Nayak et al, 2020;Aldabesh et al, 2021;Awan et al, 2021;Iskander, 2021;Khan et al, 2021;Tlili et al, 2021), and these particles have different characteristics, for example, ZnO has the highest thermal conductivity, SiO 2 has lowest thermal conductivity, Fe 3 O 4 has magnetism and enhancement of thermal conductivity (Lemes et al, 2017). Magnetic nanofluids have magnetism and mobility under a magnetic field, and thus, which are called "smart materials" and widely applied in many fields, such as heat transfer, miniature cooling, damping, biomedicine and sealing (Yadav et al, 2013;Akbar et al, 2016;Shahsavar et al, 2016;Chen et al, 2018;Chen et al, 2019).…”

Finite Element Study of Bio-Convective Stefan Blowing Ag-MgO/Water Hybrid Nanofluid Induced by Stretching Cylinder Utilizing Non-Fourier and Non-Fick’s Laws

“…Vinita et al [11] examined radiation effect on MHD free stream velocity nanofluid flow induced by stretchable cylinder in presence of chemically reactive species by applying RKF technique using ODE45 solver in MATLAB. Khan et al [12] studied the applications of bio-convection nanofluid flow in presence of activation energy. The influence of Fick's and Fourier laws on MHD dusty Casson nanofluid in presence of heat source parameter was investigated by Ramzan et al [13].…”