Second law analysis of MHD mixed convection heat transfer in a vented irregular cavity filled with Ag–MgO/water hybrid nanofluid

Benzema, Mahdi; Benkahla, Youb Khaled; Labsi, Nabila; Ouyahia, Seif-Eddine; Ganaoui, Mohammed El

doi:10.1007/s10973-019-08017-x

Cited by 65 publications

(17 citation statements)

References 52 publications

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“…This model has been constructed by considering a solid volume fraction of nanoparticles in the base fluid, and, later, the governing equations have been solved numerically by employing the finite volume method. As a result, this model has been widely considered by many scientists, engineers, and mathematicians, such as Benzema et al [3], Dero et al [4], Lund et al [5,6], Dogonchi, et al [7,8], Amini, et al [9], Zaib et al [10], Raza et al [11], Rasool et al [12,13], Dinarvand et al [14], and Roşca, et al [15] to investigate different types of flow. Furthermore, to keep the demand of the high heat transfer rate from industries and other sectors, researchers have introduced a new kind of the nanofluid by considering the two different types of the solid particles in the single convectional base fluid.…”

Section: Introductionmentioning

confidence: 99%

Dual Solutions and Stability Analysis of a Hybrid Nanofluid over a Stretching/Shrinking Sheet Executing MHD Flow

et al. 2020

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In this paper, the unsteady magnetohydrodynamic (MHD) flow of hybrid nanofluid (HNF) composed of C u − A l 2 O 3 /water in the presence of a thermal radiation effect over the stretching/shrinking sheet is investigated. Using similarity transformation, the governing partial differential equations (PDEs) are transformed into a system of ordinary differential equations (ODEs), which are then solved by using a shooting method. In order to validate the obtained numerical results, the comparison of the results with the published literature is made numerically as well as graphically and is found in good agreements. In addition, the effects of many emerging physical governing parameters on the profiles of velocity, temperature, skin friction coefficient, and heat transfer rate are demonstrated graphically and are elucidated theoretically. Based on the numerical results, dual solutions exist in a specific range of magnetic, suction, and unsteadiness parameters. It was also found that the values of f ″ ( 0 ) rise in the first solution and reduce in the second solution when the solid volume fraction ϕ C u is increased. Finally, the temporal stability analysis of the solutions is conducted, and it is concluded that only the first solution is stable.

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Section: Introductionmentioning

confidence: 99%

Dual Solutions and Stability Analysis of a Hybrid Nanofluid over a Stretching/Shrinking Sheet Executing MHD Flow

et al. 2020

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“…Figure 2 depicts the used mesh treatment for the inclined surface which is approached with staircase-like zigzag lines. This method is based on earlier numerical works [12,18].…”

Section: Problem Statement and Model Formulationmentioning

confidence: 99%

“…The mixed convection in cavities can be encountered in various technological and engineering applications such as household ventilation [11], heat exchanger, solar collectors [12], cooling of electronic devices [13], food processing [14] and many others. Many of these applications can be simplified into cavity problems with multiple ventilations ports.…”

Section: Introductionmentioning

confidence: 99%

“…Many of these applications can be simplified into cavity problems with multiple ventilations ports. Due to the practical interest of the mixed convection heat transfer, a number of numerical works dedicated to the nanofluids flow within vented cavities such as [12,[15][16][17][18][19][20][21][22][23][24]. The main aim of these investigations has been to understand the fundamentals of diverse cooling strategies, in order to enhance the thermal performance of applications involving limited spaces.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic field impact on nanofluid convective flow in a vented trapezoidal cavity using Buongiorno's mathematical model

Benzema¹,

Benkahla²,

Boudiaf³

et al. 2019

Eur. Phys. J. Appl. Phys.

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Numerical study for the effect of an external magnetic field on the mixed convection of Al2O3–water Newtonian nanofluid in a right-angle vented trapezoidal cavity was performed using the finite volume method. The non-homogeneous Buongiorno model is applied for numerical description of the dynamic phenomena inside the cavity. The nanofluid, with low temperature and high concentration, enters the cavity through the upper open border, and is evacuated through opening placed at the right end of the bottom wall. The cavity is heated from the inclined wall, while the remainder walls are adiabatic and impermeable to both the base fluid and nanoparticles. After validation of the model, the analysis was carried out for a wide range of Hartmann number (0 ≼ Ha ≼ 100) and nanoparticles volume fraction (0 ≼ ϕ0 ≼ 0.06). The flow behavior as well as the temperature and nanoparticles distribution shows a particular sensitivity to the variations of both the Hartmann number and the nanofluid concentration. The domination of conduction mechanism at high Hartmann numbers reflects the significant effect of Brownian diffusion which tends to uniform the distribution of nanoparticles in the domain. The average Nusselt number which increases with the nanoparticles addition, depends strongly on the Hartmann number. Finally, a correlation predicting the average Nusselt number within such geometry as a function of the considered parameters is proposed.

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“…Considering real‐life applications of heat transfer in numerous systems, such as geothermal engineering, nuclear reactor cooling system, thermal insulation of buildings, fiber insulation, filtration, and so forth, a large number of researchers 28–37 have conducted studies on operating devices with a high thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Effect of material parameter on mixed convective fully developed micropolar fluid flow in a vertical channel

Kalyan¹,

Sharan²,

Jyothi

2021

Heat Trans

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In this study, the effect of material parameter on the mixed convective fully developed micropolar fluid flow in a vertical channel has been analyzed. By considering appropriate boundary and interface conditions, the coupled nonlinear equations are solved analytically. The analytical results are plotted for various important parameters. It is found that an increase in the material parameter enhances the microrotation velocity and decreases the fluid velocity, and the results are shown graphically.

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Second law analysis of MHD mixed convection heat transfer in a vented irregular cavity filled with Ag–MgO/water hybrid nanofluid

Cited by 65 publications

References 52 publications

Dual Solutions and Stability Analysis of a Hybrid Nanofluid over a Stretching/Shrinking Sheet Executing MHD Flow

Dual Solutions and Stability Analysis of a Hybrid Nanofluid over a Stretching/Shrinking Sheet Executing MHD Flow

Magnetic field impact on nanofluid convective flow in a vented trapezoidal cavity using Buongiorno's mathematical model

Effect of material parameter on mixed convective fully developed micropolar fluid flow in a vertical channel

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