Development of thixotropic nanomaterial in fluid flow with gyrotactic microorganisms, activation energy, mixed convection

2020 ◽  
Vol 187 ◽  
pp. 105186 ◽  
Author(s):  
M. Ijaz Khan ◽  
Fazal Haq ◽  
Sohail A. Khan ◽  
T. Hayat ◽  
M. Imran Khan
Keyword(s):  
Activation Energy ◽  
Fluid Flow ◽  
Mixed Convection ◽  
Gyrotactic Microorganisms

scholarly journals Investigation of mixed convection magnetized Casson nanomaterial flow with activation energy and gyrotactic microorganisms

2021 ◽  
Author(s):  
Fazal Haq ◽  
Muzher Saleem ◽  
Muhammad Ijaz Khan
Keyword(s):  
Activation Energy ◽  
Mixed Convection ◽  
Hartmann Number ◽  
Volume Fraction ◽  
Fluid Velocity ◽  
Lewis Number ◽  
Fluid Temperature ◽  
Surface Drag ◽  
Radiation Chemical ◽  
Gyrotactic Microorganisms

Abstract Present article addresses mixed convection magnetohydrodynamic Casson nanomaterial flow by stretchable cylinder. The effects of thermal, solutal and motile density stratifications at the boundary of the surface are accounted. Flow governing expressions are acquired considering aspects of permeability, thermal radiation, chemical reaction, viscous dissipation and activation energy. The obtained flow model is made dimensionless through transformations and then tackled by NDsolve code in Mathematica. Physical impacts of sundry variables on nanomaterial velocity, temperature distribution, volume fraction of microorganisms and mass concentration is investigated through plots. Furthermore, quantities of engineering interest like surface drag force, heat transfer rate, density number and Sherwood number are computed and analyzed. We observed that fluid velocity diminishes for higher curvature variable, Casson fluid material variable, Hartmann number and permeability parameter. Fluid temperature has a direct relation with Eckert number, thermophoresis variable, Brownian dispersal parameter, Prandtl number and Hartmann number. Volume fraction of gyrotactic microorganisms is decreasing function of bioconvection Lewis number, stratification parameter and bioconvection Peclet number. Detailed observations are itemized at the end.

Impact of activation energy and gyrotactic microorganisms on flow of Casson hybrid nanofluid over a rotating moving disk

Heat Transfer ◽  
2021 ◽  
Author(s):  
Anigere Marikempaiah Jyothi ◽  
Rangaswamy Naveen Kumar ◽  
Ramanahalli Jayadevamurthy Punith Gowda ◽  
Yarranna Veeranna ◽  
Ballajja Chandrappa Prasannakumara
Keyword(s):  
Activation Energy ◽  
Hybrid Nanofluid ◽  
Gyrotactic Microorganisms

scholarly journals The Importance of Nanoparticles Addition in a Base Fluid Flow through a Porous Medium

2013 ◽  
Vol 8-9 ◽  
pp. 225-234
Author(s):  
Dalia Sabina Cimpean
Keyword(s):  
Porous Medium ◽  
Fluid Flow ◽  
Boundary Conditions ◽  
Mixed Convection ◽  
Mathematical Models ◽  
Base Fluid ◽  
Porous Matrix ◽  
Fluid Properties ◽  
Flow Through ◽  
Energy Equations

The present study is focused on the mixed convection fluid flow through a porous medium, when a different amount of nanoparticles is added in the base fluid. The nanofluid saturates the porous matrix and different situations of the flow between two walls are presented and discussed. Alternatively mathematical models are presented and discussed. A solution of a system which contains the momentum, Darcy and energy equations, together with the boundary conditions involved, is given. The behavior of different nanofluids, such thatAu-water, Ag-waterandFe-wateris graphically illustrated and compared with the previous results.The research target is to observe the substantial increase of the thermophysical fluid properties, when the porous medium issaturated by a nanofluid instead of a classical Newtonian fluid.

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