scholarly journals Heat and mass transmission of an Oldroyd-B nanofluid flow through a stratified medium with swimming of motile gyrotactic microorganisms and nanoparticles

2020 ◽  
Vol 141 (6) ◽  
pp. 2613-2623 ◽  
Author(s):  
E. Elanchezhian ◽  
R. Nirmalkumar ◽  
M. Balamurugan ◽  
K. Mohana ◽  
K. M. Prabu ◽  
...  
Keyword(s):  
Stratified Medium ◽  
Nanofluid Flow ◽  
Gyrotactic Microorganisms ◽  
Flow Through ◽  
Motile Gyrotactic Microorganisms

scholarly journals Swimming of Motile Gyrotactic Microorganisms and Nanoparticles in Blood Flow Through Anisotropically Tapered Arteries

2020 ◽  
Vol 8 ◽  
Author(s):  
Muhammad M. Bhatti ◽  
Marin Marin ◽  
Ahmed Zeeshan ◽  
R. Ellahi ◽  
Sara I. Abdelsalam
Keyword(s):  
Blood Flow ◽  
Gyrotactic Microorganisms ◽  
Flow Through ◽  
Motile Gyrotactic Microorganisms

scholarly journals Mixed convection in mhd second grade nanofluid flow through a porous medium containing nanoparticles and gyrotactic microorganisms with chemical reaction

Filomat ◽  
2019 ◽  
Vol 33 (14) ◽  
pp. 4627-4653 ◽  
Author(s):  
Noor Khan
Keyword(s):  
Porous Medium ◽  
Mixed Convection ◽  
Chemical Reaction ◽  
Thermal Conduction ◽  
Second Grade ◽  
Nanofluid Flow ◽  
Gyrotactic Microorganisms ◽  
Homotopy Analysis ◽  
Flow Through ◽  
The Stability

Mixed convection in magnetohydrodynamic second grade nanofluid flow through a porous medium containing nanoparticles and gyrotactic microorganisms with chemical reaction is considered. Buongiorno?s nanofluid model is used incorporating the buoyancy forces and Darcy-Forchheimer effect. Nanoparticles increase the thermal conduction in bioconvection flow and microorganisms simultaneously increase the stability of nanofluids. For the constructive (or generation) chemical reaction, the mass transfer displays an increasing behavior. Ordinary differential equations together with the boundary conditions are obtained through the similarity variables from the governing equations of the problem, which are solved by the Homotopy Analysis Method (HAM). The investigations are presented through graphs and the results are interpreted which depict the influences of all the embedded parameters.

A three-dimensional bioconvection Williamson nanofluid flow over bidirectional accelerated surface with activation energy and heat generation

2021 ◽  
pp. 2150132
Author(s):  
Samaira Aziz ◽  
Iftikhar Ahmad ◽  
Sami Ullah Khan ◽  
Nasir Ali
Keyword(s):  
Activation Energy ◽  
Heat Generation ◽  
Magnetic Parameter ◽  
Three Dimensional ◽  
Energy Parameter ◽  
Numerical Data ◽  
Nanofluid Flow ◽  
Gyrotactic Microorganisms ◽  
Combined Features ◽  
Motile Gyrotactic Microorganisms

The main focus of this research is to explore the consequences of motile gyrotactic microorganisms for unsteady Williamson nanofluid induced by bidirectional periodically accelerated surface. The combined features of magnetic and buoyancy forces with association of nanoparticles and swimming microorganisms developed the nanofluid bioconvection. Thermal radiation and heat generation aspects are considered to analyze the heat transportation phenomenon. The consequences of activation energy and chemical reaction are further explored for physical relevance. Appropriate transformations have been employed to transmute the formulated nonlinear equations into dimensionless form, and then analytically elucidated by homotopic technique. The effect of diverse dominant parameters on velocities, concentration, temperature, motile microorganisms as well as skin friction coefficients are deliberated through various graphs while the deviation in local Sherwood, Nusselt and motile density numbers have been deliberated by numerical data in tabular form. It is noticed that both velocity components periodically drop for augmentation in Williamson parameter. Current investigation accentuated that higher reaction rate leads to decay in concentration distribution, but impact of activation energy parameter is rather conflicting. Furthermore, the profile of motile microorganism leads to be intensified for higher magnetic parameter, while opposite trend is perceived for bioconvected Peclet and Lewis numbers.

scholarly journals Impact of double-diffusive convection and motile gyrotactic microorganisms on magnetohydrodynamics bioconvection tangent hyperbolic nanofluid

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 74-88 ◽  
Author(s):  
Tanveer Sajid ◽  
Muhammad Sagheer ◽  
Shafqat Hussain ◽  
Faisal Shahzad
Keyword(s):  
Differential Equations ◽  
Ordinary Differential Equations ◽  
Transfer Rate ◽  
Mass Transfer Rate ◽  
Physical Nature ◽  
Working Fluid ◽  
Nonlinear Ordinary Differential Equations ◽  
Gyrotactic Microorganisms ◽  
Motile Gyrotactic Microorganisms ◽  
Double Diffusive

AbstractThe double-diffusive tangent hyperbolic nanofluid containing motile gyrotactic microorganisms and magnetohydrodynamics past a stretching sheet is examined. By adopting the scaling group of transformation, the governing equations of motion are transformed into a system of nonlinear ordinary differential equations. The Keller box scheme, a finite difference method, has been employed for the solution of the nonlinear ordinary differential equations. The behaviour of the working fluid against various parameters of physical nature has been analyzed through graphs and tables. The behaviour of different physical quantities of interest such as heat transfer rate, density of the motile gyrotactic microorganisms and mass transfer rate is also discussed in the form of tables and graphs. It is found that the modified Dufour parameter has an increasing effect on the temperature profile. The solute profile is observed to decay as a result of an augmentation in the nanofluid Lewis number.

Exergy and entropy generation analysis of TiO2–water nanofluid flow through the water block as an electronics device

2016 ◽  
Vol 101 ◽  
pp. 104-111 ◽  
Author(s):  
S.S. Khaleduzzaman ◽  
M.R. Sohel ◽  
I.M. Mahbubul ◽  
R. Saidur ◽  
J. Selvaraj
Keyword(s):  
Entropy Generation ◽  
Nanofluid Flow ◽  
Flow Through ◽  
Water Block

scholarly journals Irreversibility process characteristics of variant viscosity and conductivity on hybrid nanofluid flow through Poiseuille microchannel: A special case study

2021 ◽  
pp. 101337
Author(s):  
Suriya Uma Devi. S ◽  
Fazle Mabood ◽  
Wasim Jamshed ◽  
S.R. Mishra ◽  
Kottakkaran Sooppy Nisar ◽  
...  
Keyword(s):  
Hybrid Nanofluid ◽  
Nanofluid Flow ◽  
Process Characteristics ◽  
Flow Through ◽  
Special Case

MHD mixed convection of a Cu–water nanofluid flow through a channel with an open trapezoidal cavity and an elliptical obstacle

Heat Transfer ◽  
2021 ◽  
Author(s):  
Khaled Al‐Farhany ◽  
Mohammed A. Alomari ◽  
Ahmed Al‐Saadi ◽  
Ali Chamkha ◽  
Hakan F. Öztop ◽  
...  
Keyword(s):  
Mixed Convection ◽  
Nanofluid Flow ◽  
Flow Through
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