Numerical investigation on the thermal transportation of MHD Cu/Al
 2 
 O
 3-H
 2
 O Casson-hybrid-nanofluid flow across an exponentially stretching cylinder incorporating heat source

Self Cite

A numerical study of the thermally stratified flow of H2O based Cu − Al2O3 hybrid nanofluid over a linearly stretching cylinder placed vertically in a porous media has been performed. The influences of viscous dissipation, thermal source/sink, and an inclined magnetic field were also considered. Using appropriate similarity transformations, the non‐linear mathematical equations of the flow model are translated into a dimensionless form. The in‐build finite difference Matlab code Bvp4c is used to attain the numerical solution of the transformed non‐linear ordinary differential equations (ODEs). Influences of nanoparticles when added to the water and also the flow parameters’ impacts on the flow rate and thermal transport rate are shown in graphs and tables. The results showed that the absolute value of the shear stress of the hybrid nanofluids was enhanced by up to 33% compared to the considered nanofluid. The study also revealed that the heat transport rate in the convective flow region was much higher in hybrid nanofluid as compared to nanofluid. For Cu − Al2O3/water hybrid nanofluid, the temperature went negative for high thermal stratification. The present study has important implications for the design and optimization of heat transfer devices that use thermally stratified hybrid nanofluids. The results also provide novel insights into the flow behavior of these fluids, that can be used to improve our understanding of their physical properties.

Section: Resultssupporting

confidence: 77%

“…Khazayinejad et al [44] discussed the thermal transmission of a hybrid nanofluid flow across a porous plate with an inclined magnetic field. Paul et al [45] discussed the Casson hybrid nanofluid flow over a horizontal stretching cylinder.…”

Section: Introductionmentioning

confidence: 99%

Thermally stratified Cu–Al₂O₃/water hybrid nanofluid flow with the impact of an inclined magnetic field, viscous dissipation and heat source/sink across a vertically stretching cylinder

Paul,

Nath,

Das

2023

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“…This was accomplished by taking into account the combined convection scenario of a Casson fluid based on kerosene oil moving around a circular cylinder while keeping the wall temperature constant. The MHD boundary layer Casson hybrid nanofluid stagnation point flow and heat transfer via an increasingly stretched cylinder were studied by Paul et al [5]. The impact of the heat source is also considered in the model.…”

Section: Introductionmentioning

confidence: 99%

ANN model for magnetised Casson fluid flow under the influence of thermal radiation and temperature stratification: Comparative analysis

Tanveer,

Ashraf

2024

The article compares the performance of multi‐layer back‐propagated neural networks using the Levenberg–Marquardt (LMS) method and Bayesian Regularization Scheme (BRS) for analysing heat transfer in magnetized Casson fluid over flat and cylindrical surfaces. Factors like mixed convection, Joule heating, thermal radiation and temperature stratification are considered. Both LMS and BRS prove effective in handling complex interactions in numerical studies. Non‐linear ODE systems are solved using a shooting technique to obtain Nusselt number datasets, which are then divided for training, testing and validation purposes. The accuracy of the artificial neural network (ANN) results is confirmed by the agreement between predicted and target Nusselt numbers. Analysis of mean square error (MSE), regression fitness and error histogram further validates ANN adeptness. Furthermore, heat transfer rate is increasing for the Casson parameter, Grashof number and radiation parameter, while, it declines for stratification parameter, Prandtl and Eckert number. The study explores the impact of various parameters on velocity and temperature profiles, revealing that ANN provides accurate Nusselt number results for both flat and cylindrical surfaces. The research contributes a novel perspective to understanding ANN behaviour in heat transfer analysis, particularly for magnetized Casson fluid flow over two stretching surfaces.

“…Waqas et al [9] elaborated on the influence of the magnetohydrodynamic radiative flow of SWCNT+TiO 2 /H 2 O and MWCNT+CoFe 2 O 4 /H 2 O HNFs across a rotating disk. Paul et al [10] elucidated Cu+ Al 2 O 3 -H 2 O Casson HNF flow generated by a stretched cylinder under the influence of the heat source. Acharya et al [11] reported the entropy generation analysis of GO+Fe 3 O 4 /H 2 O HNF transference across an unsteady spinning disk.…”

Section: Introductionmentioning

confidence: 99%

Transformer oil‐based Casson ternary hybrid nanofluid flow configured by a porous rotating disk with hall current

Paul,

Patgiri,

Sarma

2024

The present work examines the 3D, incompressible, magnetohydrodynamic, mixed convective, and Darcy‐Forchheimer Casson /transformer oil ternary hybrid nanofluid flow configured by a porous rotatory disk. This research work takes into account the influences of hall current, thermophoresis, heat absorption/generation, Brownian motion, joule heating, chemical reaction, thermal radiation, activation energy, and velocity slip condition. The administrative partial differential equations (PDEs) that expound the problem are modified into a set of ordinary differential equations (ODEs) by imposing a similarity conversion, which is further solved numerically by adapting the worthy bvp4c scheme. The velocity, thermal, and mass profiles are delineated through graphs, and the features of skin friction coefficient, heat, and mass transmission are also explicated thoroughly via tables. One significant observation of this research is that the Casson parameter weakens transversal velocity whereas a reverse tendency is noticed against the radial velocity. Our obtained outputs affirm that Casson ternary hybrid nanofluid has respectively 10.93 % and 8.86% higher heat deliverance rate when compared to Casson nanofluid and Casson hybrid nanofluid. Besides, the Casson ternary hybrid nanofluid has respectively 33.68 % and 27.52% higher mass deliverance rate when compared to the Casson nanofluid and Casson hybrid nanofluid. Also, the sturdy values of the Casson parameter lessen the skin friction coefficient. The inferences derived from our research may advantageously be used in rotating types of machinery, medical equipment, gas turbine rotators, etc.