scholarly journals Nanofluid flow with autocatalytic chemical reaction over a curved surface with nonlinear thermal radiation and slip condition

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Muhammad Ramzan ◽  
Abida Rafiq ◽  
Jae Dong Chung ◽  
Seifedine Kadry ◽  
Yu-Ming Chu
Keyword(s):  
Thermal Radiation ◽  
Chemical Reaction ◽  
Heterogeneous Reaction ◽  
Concentration Field ◽  
Curvilinear Coordinates ◽  
Curved Surface ◽  
Nonlinear Thermal Radiation ◽  
Conductivity Enhancement ◽  
Governing System ◽  
Curvature Parameter

Abstract The study of nanofluids is the most debated subject for the last two decades. Researchers have shown great interest owing to the amazing features of nanofluids including heat transfer and thermal conductivity enhancement capabilities. Having such remarkable features of nanofluids in mind we have envisioned a mathematical model that discusses the flow of nanofluid comprising Nickel-Zinc Ferrite-Ethylene glycol (Ni-ZnFe2O4–C2H6O2) amalgamation past an elongated curved surface with autocatalytic chemical reaction. The additional impacts added to the flow model are the heat generation/absorption with nonlinear thermal radiation. At the boundary, the slip and the convective conditions are added. Pertinent transformations are affianced to get the system of ordinary differential equations from the governing system in curvilinear coordinates. A numerical solution is found by applying MATLAB build-in function bvp4c. Graphical illustrations and the numerically computed estimates are discussed and analyzed properly. It is comprehended that velocity and temperature distributions have varied trends near and away from the curve when the curvature parameter is enhanced. Further, it is comprehended that the concentration field declines for both homogeneous and heterogeneous reaction parameters.

scholarly journals Nonlinear Thermal Radiation and Chemical Reaction Effects on a (Cu−CuO)/NaAlg Hybrid Nanofluid Flow Past a Stretching Curved Surface

Processes ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 962 ◽  
Author(s):  
Naveed Ahmed ◽  
Fitnat Saba ◽  
Umar Khan ◽  
Syed Tauseef Mohyud-Din ◽  
El-Sayed M. Sherif ◽  
...  
Keyword(s):  
Thermal Radiation ◽  
Chemical Reaction ◽  
Hybrid Nanofluid ◽  
Nonlinear Thermal Radiation ◽  
Nonlinear Odes ◽  
Flow And Heat Transfer ◽  
Governing System ◽  
Bruggeman Model ◽  
Heat Transport Properties ◽  
Layer Flow

The boundary layer flow of sodium alginate ( NaAlg ) based ( Cu − CuO ) hybrid nanofluid, over a curved expanding surface, has been investigated. Heat and mass transport phenomena have also been analyzed. Moreover, the impacts of chemical reaction, magnetic field and nonlinear thermal radiation are also a part of this study. This arrangement has great practical relevance, especially in the polymer and chemical industries. We have extended the Bruggeman model to make it capable of capturing the thermal conductivity of ( Cu − CuO ) / NaAlg hybrid nanofluid. We have employed some suitable transformations to obtain the governing system of nonlinear ODEs. Runge − Kutta − Fehlberg algorithm, accompanied by a shooting technique, has been employed to solve the governing system numerically. The changes in the flow and heat transfer distribution, due to various parameters, have been captured and portrayed in the form of graphs. It has been found that the addition of the nanometer-sized materials, significantly boosts the thermal and heat transport properties of the host fluid, and these phenomena seem to be more prominent, in the case of ( Cu − CuO ) / NaAlg hybrid nanofluid.

scholarly journals Impact of Nonlinear Thermal Radiation and Entropy Optimization Coatings with Hybrid Nanoliquid Flow Past a Curved Stretched Surface

Coatings ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 430 ◽  
Author(s):  
Dianchen Lu ◽  
Muhammad Ramzan ◽  
Shafiq Ahmad ◽  
Ahmad Shafee ◽  
Muhammad Suleman
Keyword(s):  
Thermal Radiation ◽  
Concentration Field ◽  
Nonlinear Thermal Radiation ◽  
Stretching Surface ◽  
Entropy Optimization ◽  
Nickel Zinc ◽  
Temperature Distributions ◽  
Opposite Trend ◽  
Curvature Parameter ◽  
Published Result

The present investigation addresses the flow of hybrid (nickel–zinc ferrite and ethylene glycol) nanoliquid with entropy optimization and nonlinear thermal radiation coatings past a curved stretching surface. Analysis was carried out in the presence of magnetohydrodynamic, heat generation/absorption, and convective heat and mass flux conditions. Solution of the modeled problem was attained numerically using MATLAB built-in function bvp4c. Impacts of prominent parameters on betrothed distributions were depicted through graphs and were well supported by requisite discussions. Numerically calculated values of Sherwood number were established in a tabulated form and were scrutinized critically. An excellent concurrence was achieved when results of the presented model were compared with previously published result; hence, dependable results are being presented. It was observed that concentration field diminished with increasing values of curvature parameter, though the opposite trend was noticed for velocity and temperature distributions. Further, it was detected that Nusselt number decreased with augmented values of radiation and curvature parameters.

Nonlinear thermal radiation and chemical reaction effects on Maxwell fluid flow with convectively heated plate in a porous medium

2018 ◽  
Vol 48 (2) ◽  
pp. 744-759 ◽  
Author(s):  
Kh. Hosseinzadeh ◽  
M. Gholinia ◽  
B. Jafari ◽  
A. Ghanbarpour ◽  
H. Olfian ◽  
...  
Keyword(s):  
Porous Medium ◽  
Fluid Flow ◽  
Thermal Radiation ◽  
Chemical Reaction ◽  
Maxwell Fluid ◽  
Nonlinear Thermal Radiation ◽  
Heated Plate

scholarly journals A Numerical Simulation of Silver–Water Nanofluid Flow with Impacts of Newtonian Heating and Homogeneous–Heterogeneous Reactions Past a Nonlinear Stretched Cylinder

Symmetry ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 295 ◽  
Author(s):  
Muhammad Suleman ◽  
Muhammad Ramzan ◽  
Shafiq Ahmad ◽  
Dianchen Lu ◽  
Taseer Muhammad ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Nonlinear System ◽  
Thermal Radiation ◽  
Concentration Field ◽  
Heterogeneous Reactions ◽  
Nonlinear Thermal Radiation ◽  
Newtonian Heating ◽  
Nanofluid Flow ◽  
Shooting Technique ◽  
Highly Nonlinear

The aim of the present study is to address the impacts of Newtonian heating and homogeneous–heterogeneous (h-h) reactions on the flow of Ag–H2O nanofluid over a cylinder which is stretched in a nonlinear way. The additional effects of magnetohydrodynamics (MHD) and nonlinear thermal radiation are also added features of the problem under consideration. The Shooting technique is betrothed to obtain the numerical solution of the problem which is comprised of highly nonlinear system ordinary differential equations. The sketches of different parameters versus the involved distributions are given with requisite deliberations. The obtained numerical results are matched with an earlier published work and an excellent agreement exists between both. From our obtained results, it is gathered that the temperature profile is enriched with augmented values radiation and curvature parameters. Additionally, the concentration field is a declining function of the strength of h-h reactions.

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