Transient natural convective flow of a radiative viscous incompressible fluid past an exponentially accelerated porous plate with chemical reaction species

Rath, C. K.; Nayak, Anita

doi:10.1002/htj.22703

Cited by 4 publications

(12 citation statements)

References 54 publications

(82 reference statements)

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“…The peristaltic flow of Cu − Fe 3 O 4 /H 2 O hybrid nanofluid influenced by ion-slip and Hall current was scrutinized by Akbar et al [26]. The transient MHD flow past an upright plate moving with exponential acceleration was examined by Rath et al [27,28]. Mehta and Kataria [29] have utilized the Buongiorno model with chemical reaction analyzing the stagnation point flow past a stretching sheet.…”

Section: Introductionmentioning

confidence: 99%

Entropy analysis of slip flow second-grade Cu − EO and TiO ₂ − EO nanofluids using Modified Buongiorno model

Rath¹,

Nayak²

2023

Phys. Scr.

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The current research investigates the magnetohydrodynamic (MHD) slip flow of second-grade nanofluids past a permeable stretching sheet in a porous medium. The flow analysis is accomplished considering thermophoresis, Brownian diffusion, chemical reaction, and elastic deformation. The implementation of the Modified Buongiorno model (MBM) on second-grade nanofluid is the novel aspect of the study. The formulated coupled nonlinear equations are non-dimensionalized, applying suitable similarity transformation. Numerical resolution of the resulting equations is achieved via MATLAB solver bvp4c. In our problem, two different groups of nanofluids, $Cu-EO$ and $TiO_2-EO$, have been considered. The development of profiles of nanofluid velocity, temperature, concentration, entropy generation and Bejan number, with the flow parameters, is elaborated graphically. Tabulated values of skin friction, Nusselt number, and Sherwood number are illustrated. The principal outcomes of this study demonstrate a higher rate of heat transfer of $Cu-EO$ nanofluid than $TiO_2-EO$ nanofluid. The Nusselt number significantly decelerates, and the Sherwood number accelerates due to the combined influence of the Brownian diffusion and thermophoresis parameters. The second-grade parameter and nanoparticle volume fraction boost the skin friction magnitude. Furthermore, the entropy generation increases due to the Brinkman number and concentration diffusion parameter. The present research can be utilized to enhance the effectiveness of cooling systems in automobile engines, nuclear reactors, and heat exchangers. For the validation of our result, a comparative study is made with the previous authors and concludes in good agreement.

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Section: Introductionmentioning

confidence: 99%

Entropy analysis of slip flow second-grade Cu − EO and TiO ₂ − EO nanofluids using Modified Buongiorno model

Rath¹,

Nayak²

2023

Phys. Scr.

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“…Thus, v v v ′ = − ( > 0) 0 0 which represents the constant suction velocity along the y′-direction. Following Sarma and Pandit, 45 Krishna et al, 46 Makinde et al, 49 Rath et al, 50 and Rath and Nayak, 51 the governing equations and initial and boundary conditions are written as…”

Section: Formulation Of the Modelmentioning

confidence: 99%

“…To nondimensionalize the governing equations ( 11)-( 14) the following dimensionless quantities are defined below 16,41,48,50,51 :…”

Section: Formulation Of the Modelmentioning

confidence: 99%

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Hall current and Dufour effect on the flow of a viscous fluid in the presence of suction, chemical reaction, and heat source: Laplace transform procedure

Rath,

Nayak

2024

Heat Trans

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The present investigation explores the transient magnetohydrodynamics gravity‐driven flow of a viscous, incompressible, electrically conducting fluid past a permeable exponentially accelerated vertical plate in the presence of thermal radiation and suction. Due to several applications in different areas, the influence of Hall current, Dufour number, heat source parameter, and chemically reactive species diffusion are vital and are incorporated in the study, which is the novelty of the present work. The model equations are derived and resolved by utilizing an analytical technique called the Laplace transform procedure. Various properties of the flow due to the influence of different vital parameters have been depicted with the help of graphs. The computed gradients of velocity, temperature and concentration are presented in tabular form. The Hall parameter is observed to strengthen the secondary flow while diminishing the primary flow. Dufour number and heat source parameter enhance the fluid temperature and velocity profiles while the heat sink declines them. Enhancement of the acceleration parameter significantly amplifies the primary skin friction coefficient. Suction boosts the heat transport as well as the mass transport rates at the surface of the plate, whereas injection declines them. Further, the Dufour number causes a significant reduction in the Nusselt number and magnitude of the secondary skin friction coefficient. The practical applications of the current research are the design of aircraft, cooling of microchips, Hall accelerators, separation of isotopes and many more.

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“…Reddy et al [6] investigated natural convective flow via porous media past an exponentially stretching sheet while a chemical reaction, heat source and sink were present. Rath and Nayak [7] examined the unsteady magnetohydrodynamic natural convective flow of an incompressible viscous fluid past an exponentially accelerated porous plate encircled by a porous medium with chemical reactions. Nandi and Kumbhakar [8] investigated the unsteady natural convective flow across a permeable vertical plate with periodic motions.…”

Section: Introductionmentioning

confidence: 99%

Chemical reaction and radiation impact on unsteady free convective flow through a porous medium past an infinite oscillatory vertical plate

Saikia,

Ahmed

2023

Z Angew Math Mech

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The current investigation is concerned with the effect of chemical reactions and radiation on unsteady free convective flow through a porous medium via an infinitely oscillating vertical plate. The primary goal of this study is to investigate the effects of first‐order homogeneous chemical reactions and thermal radiation on mass flow and heat transmission characteristics. The closed‐form Laplace transformation method is used to obtain exact solutions to the governing equations for concentration, energy and momentum. The impact of various non‐dimensional parameters on fluid velocity, temperature and concentration is graphically depicted. Furthermore, 3‐dimensional surface plots for the Nusselt number and Sherwood number are provided, and the equation for skin friction is derived and demonstrated in tabular form. Investigation simulates that the skin friction increases as the chemical reaction parameter hikes, whereas the fluid concentration reduces as the chemical reaction parameter increases. Further, it was revealed that the augmentation of the radiation parameter decreased the temperature and velocity pattern. It is seen that the primary and secondary velocities reduce due to the increment of the chemical reaction parameter.

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Transient natural convective flow of a radiative viscous incompressible fluid past an exponentially accelerated porous plate with chemical reaction species

Cited by 4 publications

References 54 publications

Entropy analysis of slip flow second-grade Cu − EO and TiO ₂ − EO nanofluids using Modified Buongiorno model

Entropy analysis of slip flow second-grade Cu − EO and TiO ₂ − EO nanofluids using Modified Buongiorno model

Hall current and Dufour effect on the flow of a viscous fluid in the presence of suction, chemical reaction, and heat source: Laplace transform procedure

Chemical reaction and radiation impact on unsteady free convective flow through a porous medium past an infinite oscillatory vertical plate

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Transient natural convective flow of a radiative viscous incompressible fluid past an exponentially accelerated porous plate with chemical reaction species

Cited by 4 publications

References 54 publications

Entropy analysis of slip flow second-grade Cu − EO and TiO 2 − EO nanofluids using Modified Buongiorno model

Entropy analysis of slip flow second-grade Cu − EO and TiO 2 − EO nanofluids using Modified Buongiorno model

Hall current and Dufour effect on the flow of a viscous fluid in the presence of suction, chemical reaction, and heat source: Laplace transform procedure

Chemical reaction and radiation impact on unsteady free convective flow through a porous medium past an infinite oscillatory vertical plate

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Entropy analysis of slip flow second-grade Cu − EO and TiO ₂ − EO nanofluids using Modified Buongiorno model

Entropy analysis of slip flow second-grade Cu − EO and TiO ₂ − EO nanofluids using Modified Buongiorno model