Chemically Reacting Unsteady Flow of Nanofluid over a Cone and Plate with Activation Energy

2018 ◽  
Vol 387 ◽  
pp. 343-351
Author(s):  
H. Thameem Basha ◽  
Sreedhar Rao Gunakala ◽  
Oluwole Daniel Makinde ◽  
R. Sivaraj
Keyword(s):  
Activation Energy ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Fluid Transport ◽  
Energy Parameter ◽  
Brownian Diffusion ◽  
Transfer Rates ◽  
Mass Transfer Mechanism ◽  
Chemically Reacting ◽  
Nicolson Scheme

This computational analysis explores the properties of uneven energy gain or loss on the fluid transport properties of a chemically reacting nanofluid with two types of geometries. Simulations have been done to investigate the heat and mass transfer characteristics using Crank-Nicolson scheme. Influence of active parameters such as Hartman number, heat source and sinks, Brownian diffusion, thermophoretic diffusivity, activation energy and Schmidt number is graphically presented. Tables demonstrate the significant impact of sundry parameters on skin-friction factor, heat and mass transfer rates. The achieved results expose that the activation energy parameter is having high influence on mass transfer mechanism.

Unsteady Flow of Chemically Reacting Nanofluid over a Cone and Plate with Heat Source/Sink

2018 ◽  
Vol 387 ◽  
pp. 615-624 ◽  
Author(s):  
H. Thameem Basha ◽  
Oluwole Daniel Makinde ◽  
Akshay Arora ◽  
Amandeep Singh ◽  
R. Sivaraj
Keyword(s):  
Heat Source ◽  
Fluid Transport ◽  
Brownian Diffusion ◽  
Heat Transfer Characteristics ◽  
Transfer Rates ◽  
Flow And Heat Transfer ◽  
Chemically Reacting ◽  
Nicolson Scheme ◽  
Source Sink ◽  
Chemical Reaction Parameter

The intention of this communication is to explore the characteristics of Lorentz force on the fluid transport properties of a chemically reacting nanofluid with two types of geometries. Simulations have been done to investigate the controlling equations utilizing Crank-Nicolson scheme. Influence of embedded parameters such as Hartman number, heat source/sink, Brownian diffusion, chemical reaction parameter and thermophoretic diffusivity is graphically presented. Tables demonstrate the significant impact of sundry parameters on skin-friction factor, heat and mass transfer rates. The achieved results expose that the Hartman number having high influences on the fluid flow and heat transfer characteristics.

Nonlinear Radiative Squeezed Flow of Nanofluid Subject to Chemical Reaction and Activation Energy

2020 ◽  
Vol 142 (8) ◽  
Author(s):  
Ikram Ullah ◽  
Tasawar Hayat ◽  
Ahmed Alsaedi
Keyword(s):  
Activation Energy ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Nonlinear Thermal Radiation ◽  
Surface Drag ◽  
Transfer Rates ◽  
Drag Forces ◽  
Parallel Disks ◽  
Physical Variables ◽  
Squeezed Flow

Abstract This study explores the flow of magnetized nanomaterials between two parallel disks. Novel aspects of activation energy and nonlinear thermal radiation characterized the heat and mass transfer. Nonlinear system of ODEs is obtained via proper variables. Homotopic scheme determines the convergence interval of governing expressions. Plots have been interpreted in order to examine how the temperature and concentration are influenced by various physical variables. Further, surface drag forces and heat and mass transfer rates are computed numerically and analyzed. Our computed analysis depicts that the influence of squeezed and magnetic parameters have reverse effects on temperature.

Influence of Non-Uniform Heat Source/Sink on Unsteady Chemically Reacting Nanofluid Flow over a Cone and Plate

2018 ◽  
Vol 389 ◽  
pp. 50-59 ◽  
Author(s):  
H. Thameem Basha ◽  
R. Sivaraj ◽  
I.L. Animasaun ◽  
Oluwole Daniel Makinde
Keyword(s):  
Mass Transfer ◽  
Heat Source ◽  
Friction Factor ◽  
Skin Friction ◽  
Heat And Mass Transfer ◽  
Brownian Diffusion ◽  
Transfer Characteristics ◽  
Uniform Heat ◽  
Chemically Reacting ◽  
Source Sink

This computational study explores the properties of non-uniform heat source/sink on the fluid transport properties of a chemically reacting nanofluid with two types of geometries saturated with porous medium. Simulations have been done to investigate the heat and mass transfer characteristics using Crank-Nicolson scheme. Influence of active parameters such as Hartman number, heat source and sinks, Brownian diffusion, higher order chemical reaction, Prandtl number and thermophoretic diffusivity are graphically presented. Tables demonstrate the significant impact of sundry parameters on skin-friction factor, heat and mass transfer rates. The achieved results expose that the heat source/sink parameter has high influences on the fluid flow and heat transfer characteristics. A decrease in average skin friction factor due to the magnetic field is more significant in the flow on a plate than that of cone.

scholarly journals Impact of Binary Chemical Reaction and Activation Energy on Heat and Mass Transfer of Marangoni Driven Boundary Layer Flow of a Non-Newtonian Nanofluid

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 702
Author(s):  
Ramanahalli Jayadevamurthy Punith Gowda ◽  
Rangaswamy Naveen Kumar ◽  
Anigere Marikempaiah Jyothi ◽  
Ballajja Chandrappa Prasannakumara ◽  
Ioannis E. Sarris
Keyword(s):  
Heat Transfer ◽  
Activation Energy ◽  
Boundary Layer ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Velocity Gradient ◽  
Boundary Layer Flow ◽  
Biological Fluids ◽  
Porosity Parameter ◽  
Layer Flow

The flow and heat transfer of non-Newtonian nanofluids has an extensive range of applications in oceanography, the cooling of metallic plates, melt-spinning, the movement of biological fluids, heat exchangers technology, coating and suspensions. In view of these applications, we studied the steady Marangoni driven boundary layer flow, heat and mass transfer characteristics of a nanofluid. A non-Newtonian second-grade liquid model is used to deliberate the effect of activation energy on the chemically reactive non-Newtonian nanofluid. By applying suitable similarity transformations, the system of governing equations is transformed into a set of ordinary differential equations. These reduced equations are tackled numerically using the Runge–Kutta–Fehlberg fourth-fifth order (RKF-45) method. The velocity, concentration, thermal fields and rate of heat transfer are explored for the embedded non-dimensional parameters graphically. Our results revealed that the escalating values of the Marangoni number improve the velocity gradient and reduce the heat transfer. As the values of the porosity parameter increase, the velocity gradient is reduced and the heat transfer is improved. Finally, the Nusselt number is found to decline as the porosity parameter increases.

scholarly journals Effects of Variable Transport Properties on Heat and Mass Transfer in MHD Bioconvective Nanofluid Rheology with Gyrotactic Microorganisms: Numerical Approach

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 231
Author(s):  
Muhammad Awais ◽  
Saeed Ehsan Awan ◽  
Muhammad Asif Zahoor Raja ◽  
Nabeela Parveen ◽  
Wasim Ullah Khan ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Transport Properties ◽  
Heat And Mass Transfer ◽  
Group Analysis ◽  
Numerical Approach ◽  
Validity Of Results ◽  
Gyrotactic Microorganisms ◽  
Transfer Rates ◽  
Buongiorno’S Model ◽  
Density Distributions

Rheology of MHD bioconvective nanofluid containing motile microorganisms is inspected numerically in order to analyze heat and mass transfer characteristics. Bioconvection is implemented by combined effects of magnetic field and buoyancy force. Gyrotactic microorganisms enhance the heat and transfer as well as perk up the nanomaterials’ stability. Variable transport properties along with assisting and opposing flow situations are taken into account. The significant influences of thermophoresis and Brownian motion have also been taken by employing Buongiorno’s model of nanofluid. Lie group analysis approach is utilized in order to compute the absolute invariants for the system of differential equations, which are solved numerically using Adams-Bashforth technique. Validity of results is confirmed by performing error analysis. Graphical and numerical illustrations are prepared in order to get the physical insight of the considered analysis. It is observed that for controlling parameters corresponding to variable transport properties c2, c4, c6, and c8, the velocity, temperature, concentration, and bioconvection density distributions accelerates, respectively. While heat and mass transfer rates increases for convection parameter and bioconvection Rayleigh number, respectively.

scholarly journals Unsteady Heat and Mass Transfer of Chemically Reacting Micropolar Fluid in a Porous Channel with Hall and Ion Slip Currents

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Odelu Ojjela ◽  
N. Naresh Kumar
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Chemical Reaction ◽  
Micropolar Fluid ◽  
Parallel Plates ◽  
Field Equations ◽  
Electrically Conducting ◽  
Similarity Transformations ◽  
Ion Slip ◽  
Chemically Reacting

This paper presents an incompressible two-dimensional heat and mass transfer of an electrically conducting micropolar fluid flow in a porous medium between two parallel plates with chemical reaction, Hall and ion slip effects. Let there be periodic injection or suction at the lower and upper plates and the nonuniform temperature and concentration at the plates are varying periodically with time. The flow field equations are reduced to nonlinear ordinary differential equations using similarity transformations and then solved numerically by quasilinearization technique. The profiles of velocity components, microrotation, temperature distribution and concentration are studied for different values of fluid and geometric parameters such as Hartmann number, Hall and ion slip parameters, inverse Darcy parameter, Prandtl number, Schmidt number, and chemical reaction rate and shown in the form of graphs.

Computational analysis of heat and mass transfer in a micropolar fluid flow through a porous medium between permeable channel walls

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sohail Ahmad ◽  
Muhammad Ashraf ◽  
Kashif Ali ◽  
Kottakkaran Sooppy Nisar
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Micropolar Fluid ◽  
Numerical Data ◽  
Substantial Effect ◽  
Linearization Method ◽  
Transfer Rates ◽  
Micropolar Fluid Flow ◽  
Permeable Walls ◽  
Model Equations

Abstract The present work numerically investigates the mass and heat transport flow of micropolar fluid in a channel having permeable walls. The appropriate boundary layer approximations are used to convert the system of flow model equations in ODEs, which are then numerically treated with the quasi-linearization method along with finite difference discretization. This technique creates an efficient way to solve the complex dynamical system of equations. A numerical data comparison is presented which assures the accuracy of our code. The outcomes of various problem parameters are portrayed via the graphs and tables. The concentration and temperature accelerate with the impacts of the Peclet numbers for the diffusion of mass and heat, respectively. It is also found that the porosity of the medium has a substantial effect on the skin friction but low effect on the heat and mass transfer rates. Our results may be beneficial in lubrication, foams and aerogels, micro emulsions, micro machines, polymer blends, alloys, etc.

Sign in / Sign up

Export Citation Format

Share Document