Comprehensive analysis of thermal radiation impact on an unsteady MHD nanofluid flow across an infinite vertical flat plate with ramped temperature with heat consumption

Reddy, Y. Dharmendar; Goud, B. Shankar

doi:10.1016/j.rineng.2022.100796

Cited by 36 publications

(3 citation statements)

References 38 publications

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“…[39] and Reddy et al. [40].

\begin{equation}{\rho }_{Thnf}\frac{{\partial {u}^ * }}{{\partial {t}^ * }} = {\mu }_{Thnf}\left( {1 + \frac{1}{\beta }} \right)\frac{{{\partial }^2{u}^ * }}{{\partial {y}^{{ * }^2}}} + g{\left( {\rho {\beta }_T} \right)}_{Thnf}\left( {{T}^ * - {T}_\infty ^ * } \right) - {\sigma }_{Thnf}{B}_0^2{u}^ * - \frac{{{\mu }_{Thnf}}}{{{k}^ * }}{u}^ * \end{equation}

\begin{equation}{\left( {\rho {c}_p} \right)}_{Thnf}\frac{{\partial {T}^ * }}{{\partial {t}^ * }} = {k}_{Thnf}\frac{{{\partial }^2{T}^ * }}{{\partial {y}^{{ * }^2}}} - \frac{{\partial {q}_r}}{{\partial {y}^ * }} + {\sigma }_{Thnf}{B}_0^2{u}^{* 2} - {Q}_0({T}^ * - {T}_\infty ^ * )\end{equation}

boundary conditions

\begin{matrix} left u^{*} goodbreak= 0, <... \end{matrix}\}

…”

Section: Formulation Of the Problemmentioning

confidence: 99%

MHD Casson ternary hybrid nanofluid flow through a vertical porous plate with thermal radiation: A finite difference approach

Sakkaravarthi,

Sakthi,

Reddy

2024

Z Angew Math Mech

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This entire study aims to investigate the impacts of linear thermal radiation and MHD Casson ternary hybrid nanofluid flows over a vertical porous plate for comparison of nanofluid, hybrid, and tri‐hybrid nanofluids with Newtonian and non‐Newtonian fluids. We used a ternary hybrid nanofluid, Blood contains three types of oxides and metals: spherical ferric oxide (Fe3O4), platelet‐shaped zinc (Zn), and cylindrically‐shaped gold (Au) nanoparticles. The coupled nonlinear dual partial differential equations (PDEs) are turned into PDEs using nondimensional quantities. The Finite Difference Method (FDM) and the Perturbation Method are then used to solve the PDEs. The impacts of different parameters on temperature, velocity, Nusselt number, and Skin friction profiles have been discussed. The increase in viscosity occurs because an increase in Gr also causes an increase in the velocity field for nanofluid, hybrid, and tri‐hybrid nanofluids. A tri‐hybrid nanofluids performs better among the three, such as nanofluid, hybrids and tri‐hybrid nanofluids. As the volume fractions (Fe3O4) increase, the temperature increase for both Newtonian and non‐Newtonian fluids. The increase in temperature is due to the thermal conductivity of nanoparticles, which is enhanced by growth estimates of the nanoparticle volume fraction. The high temperature of the fluid is observed for large estimates of nanoparticle volume fraction. An increase gold (Au) also increases the temperature for shapes (cylinder, platelet, and spherical). A spherical shape performs better among the three, such as cylinder, platelet, and spherical. In this model, biomedical applications such as antiviral and therapeutic, treatment of the COVID‐19 virus, cancer treatment, and anticancer medication delivery systems.

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“…[39] and Reddy et al. [40].

\begin{equation}{\rho }_{Thnf}\frac{{\partial {u}^ * }}{{\partial {t}^ * }} = {\mu }_{Thnf}\left( {1 + \frac{1}{\beta }} \right)\frac{{{\partial }^2{u}^ * }}{{\partial {y}^{{ * }^2}}} + g{\left( {\rho {\beta }_T} \right)}_{Thnf}\left( {{T}^ * - {T}_\infty ^ * } \right) - {\sigma }_{Thnf}{B}_0^2{u}^ * - \frac{{{\mu }_{Thnf}}}{{{k}^ * }}{u}^ * \end{equation}

\begin{equation}{\left( {\rho {c}_p} \right)}_{Thnf}\frac{{\partial {T}^ * }}{{\partial {t}^ * }} = {k}_{Thnf}\frac{{{\partial }^2{T}^ * }}{{\partial {y}^{{ * }^2}}} - \frac{{\partial {q}_r}}{{\partial {y}^ * }} + {\sigma }_{Thnf}{B}_0^2{u}^{* 2} - {Q}_0({T}^ * - {T}_\infty ^ * )\end{equation}

boundary conditions

\begin{matrix} left u^{*} goodbreak= 0, <... \end{matrix}\}

…”

Section: Formulation Of the Problemmentioning

confidence: 99%

MHD Casson ternary hybrid nanofluid flow through a vertical porous plate with thermal radiation: A finite difference approach

Sakkaravarthi,

Sakthi,

Reddy

2024

Z Angew Math Mech

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“…The effects of radiation on stenosis are better understood by study of the radiation parameter. Thermal radiation impact on an unsteady MHD nanofluid flow for Newtonian and non-Newtonian fluid has been discussed by Bejawada and Nandeppanavar [29], Jamshed et al [30] and Reddy and Goud [31]. Sharma et al [32,33] analysed an unsteady MHD free and forced convection for a heat-generating fluid with and without thermal radiation and chemical reaction.…”

Section: Introductionmentioning

confidence: 99%

Computer Simulation of Heat and Mass Transfer Effects on Nanofluid Flow of Blood Through an Inclined Stenosed Artery With Hall Effect

Mishra

2024

Acta Mechanica Et Automatica

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The present study deals with the analysis of heat and mass transfer for nanofluid flow of blood through an inclined stenosed artery under the influence of the Hall effect. The effects of hematocrit-dependent viscosity, Joule heating, chemical reaction and viscous dissipation are taken into account in the governing equations of the physical model. Non-dimensional differential equations are solved using the finite difference method, by taking into account the no-slip boundary condition. The effects of different thermophysical parameters on the velocity, temperature, concentration, shear stress coefficient and Nusselt and Sherwood numbers of nano-biofluids are exhaustively discussed and analysed through graphs. With an increase in stenosis height, shear stress, the Nusselt number and the Sherwood number are computed, and the impacts of each are examined for different physical parameters. To better understand the numerous phenomena that arise in the artery when nanofluid is present, the data are displayed graphically and physically described. It is observed that as the Hartman number and Hall parameter increase, the velocity drops. This is as a result of the Lorentz force that the applied magnetic field has generated. Blood flow in the arteries is resisted by the Lorentz force. This study advances the knowledge of stenosis and other defects’ non-surgical treatment options and helps reduce post-operative consequences. Moreover, ongoing research holds promise in the biomedical field, specifically in magnetic resonance angiography (MRA), an imaging method for artery examination and anomaly detection.

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“…The field of magnetohydrodynamics (MHD) explores the behavior of conductive fluids in the presence of magnetic body forces (Aly and Pop, 2019). The literature on the topic claims that magnetic force could either have a beneficial or adverse effect on heat transfer in different geometry such as curved channel (Iqbal et al , 2023), flat plate (Reddy and Goud, 2023), trapezoidal microchannel (Sepehrnia et al , 2021) and square cavity (Geridönmez and Öztop, 2021). Numerous studies have documented the enhancement of heat transfer caused by the influence of a magnetic field on a nanofluid used as a coolant in a porous heat sink (Izadi et al , 2020b).…”

Section: Introductionmentioning

confidence: 99%

Thermal management of the central processing unit cooling system using a cylindrical metal foam heat sink under the influence of magnetohydrodynamic nanofluid flow

Izadi,

Rasam

2023

HFF

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Purpose Efficient thermal management of central processing unit (CPU) cooling systems is vital in the context of advancing information technology and the demand for enhanced data processing speeds. This study aims to explore the thermal performance of a CPU cooling setup using a cylindrical porous metal foam heat sink. Design/methodology/approach Nanofluid flow through the metal foam is simulated using the Darcy–Brinkman–Forschheimer equation, accounting for magnetic field effects. The temperature distribution is modeled through the local thermal equilibrium equation, considering viscous dissipation. The problem’s governing partial differential equations are solved using the similarity method. The CPU’s hot surface serves as a solid wall, with nanofluid entering the heat sink as an impinging jet. Verification of the numerical results involves comparison with existing research, demonstrating strong agreement across numerical, analytical and experimental findings. Ansys Fluent® software is used to assess temperature, velocity and streamlines, yielding satisfactory results from an engineering standpoint. Findings Investigating critical parameters such as Darcy number (10−4 ≤ DaD ≤ 10−2), aspect ratio (0.5 ≤ H/D ≤ 1.5), Reynolds number (5 ≤ ReD,bf ≤ 3500), Eckert number (0 ≤ ECbf ≤ 0.1) , porosity (0.85 ≤ ε ≤ 0.95), Hartmann number (0 ≤ HaD,bf ≤ 300) and the volume fraction of nanofluid (0 ≤ φ ≤ 0.1) reveals their impact on fluid flow and heat sink performance. Notably, Nusselt number will reduce 45%, rise 19.2%, decrease 14.1%, and decrease 0.15% for Reynolds numbers of 600, with rising porosity from 0.85 to 0.95, Darcy numbers from 10−4 to 10−2, Eckert numbers from 0 to 0.1, and Hartman numbers from 0 to 300. Originality/value Despite notable progress in studying thermal management in CPU cooling systems using porous media and nanofluids, there are still significant gaps in the existing literature. First, few studies have considered the Darcy–Brinkman–Forchheimer equation, which accounts for non-Darcy effects and the flow and geometric interactions between coolant and porous medium. The influence of viscous dissipation on heat transfer in this specific geometry has also been largely overlooked. Additionally, while nanofluids and impinging jets have demonstrated potential in enhancing thermal performance, their utilization within porous media remains underexplored. Furthermore, the unique thermal and structural characteristics of porous media, along with the incorporation of a magnetic field, have not been fully investigated in this particular configuration. Consequently, this study aims to address these literature gaps and introduce novel advancements in analytical modeling, non-Darcy flow, viscous dissipation, nanofluid utilization, impinging jets, porous media characteristics and the impact of a magnetic field. These contributions hold promising prospects for improving CPU cooling system thermal management and have broader implications across various applications in the field.

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Comprehensive analysis of thermal radiation impact on an unsteady MHD nanofluid flow across an infinite vertical flat plate with ramped temperature with heat consumption

Cited by 36 publications

References 38 publications

MHD Casson ternary hybrid nanofluid flow through a vertical porous plate with thermal radiation: A finite difference approach

MHD Casson ternary hybrid nanofluid flow through a vertical porous plate with thermal radiation: A finite difference approach

Computer Simulation of Heat and Mass Transfer Effects on Nanofluid Flow of Blood Through an Inclined Stenosed Artery With Hall Effect

Thermal management of the central processing unit cooling system using a cylindrical metal foam heat sink under the influence of magnetohydrodynamic nanofluid flow

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