Natural convection in an inclined parallelogrammic porous enclosure under the effect of magnetic field

Jagadeesha, R D; Prasanna, B. M. R.; Younghae, D; Sankar, M.

doi:10.1088/1742-6596/908/1/012076

Cited by 10 publications

(4 citation statements)

References 8 publications

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“…NFs possess unique traits like homogeneity, efficient thermal conduction at low nanoparticle concentrations, long-term stability and minimal interference with flow paths. Consequently, these remarkable liquids find extensive applications in diverse electrical devices, including electronic fluid flow projection systems, microchip coolants, microreactors and micro-electromechanical circuits, among others (Sankar et al , 2016; Jagadeesha et al , 2017). Choi and Eastman (1995) put forth an intriguing hypothesis, suggesting the possibility of creating a heat transport fluid by suspending metalized nanoparticles in heat transfer liquids.…”

Section: Introductionmentioning

confidence: 99%

Homotopic simulation of MHD bioconvective flow of water-based hybrid nanofluid over a thermal convective exponential stretching surface

Shamshuddin,

Saeed,

Mishra

et al. 2023

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Purpose Whilst a modest number of investigations have been undertaken concerning nanofluids (NFs), the exploration of fluid flow under exponentially stretching velocities using NFs remains comparatively uncharted territory. This work presents a distinctive contribution through the comprehensive examination of heat and mass transfer phenomena in the NF ND–Cu/H2O under the influence of an exponentially stretching velocity. Moreover, the investigation delves into the intriguing interplay of gyrotactic microorganisms and convective boundary conditions within the system. Design/methodology/approach Similarity transformations have been used on PDEs to convert them into dimensionless ODEs. The solution is derived by using the homotopy analysis method (HAM). The pictorial notations have been prepared for sundry flow parameters. Furthermore, some engineering quantities are calculated in terms of the density of motile microbes, Nusselt and Sherwood numbers and skin friction, which are presented in tabular form. Findings The mixed convection effect associated with the combined effect of the buoyancy ratio, bioconvection Rayleigh constant and the resistivity due to the magnetization property gives rise to attenuating the velocity distribution significantly in the case of hybrid nanoliquid. The parameters involved in the profile of motile microorganisms attenuate the profile significantly. Practical implications The current simulations have uncovered fascinating discoveries about how metallic NFs behave near a stretched surface. These insights give us valuable information about the characteristics of the boundary layer close to the surface under exponential stretching. Originality/value The novelty of the current investigation is the analysis of NF ND–Cu/H2O along with an exponentially stretching velocity in a system with gyrotactic microorganisms. The investigation of fluid flow at an exponentially stretching velocity using NFs is still relatively unexplored.

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Section: Introductionmentioning

confidence: 99%

Homotopic simulation of MHD bioconvective flow of water-based hybrid nanofluid over a thermal convective exponential stretching surface

Shamshuddin,

Saeed,

Mishra

et al. 2023

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“…Hussain et al [31] studied the natural convection heat transfer in parallelogram geometry with heat generation and non-uniformly heated left sidewall and right cooled side wall while the top and bottom walls are adiabatic. Jagadeesha et al [32,33] conducted a numerical study for a double diffusive natural convection in parallelogrammic enclosure filled with a porous medium. In the first study the heated side walls and adiabatic top and bottom walls.…”

Section: Introductionmentioning

confidence: 99%

Heatline visualization of natural convection heat transfer for nanofluids confined within parallelogrammic cavities in presence of discrete isoflux sources

et al. 2021

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Natural convection in a parallelogrammic enclosure filled with different types of nanofluids (Al 2 O 3 , Ag and TiO 2 ) subjected to three discrete heated isoflux is examined numerically by using a heatlines visualization method. The position of three discrete isoflux are at left and right sidewalls remark by (λ = 0.25), while the third isoflux at a bottom wall remark by (ζ = 0.5). The top wall with the remaining regions in the bottom wall is insulated, while the remaining regions in the side walls are maintained at low temperatures. Finite element method based on a Chorin's algorithm used to solve the governing equation continuity, momentum and energy. Numerical calculations were achieved for a wide range of Rayleigh numbers (10 4 ≤Ra≤10 7 ), skew angle (−30 o ≤γ≤+30 o ), and volume fraction of nanoparticles (0≤ Φ≤0.2). The result is explained in term of stream functions, isotherms, heatfunctions, local and average Nusselt numbers. It is found that the heat transfer performance considerably improve with the supplement water of various species of nanofluid and changing skew angle. Furthermore, nine correlations are established to approximate the average Nusselt number.

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“…There are some studies on impact of inclination on buoyant convection in an enclosed area (Jagadeesha et al, 2017a(Jagadeesha et al, , 2017b. Rasoul and Prinos (1997) examined the influence of inclination on cubical box for different Rayleigh numbers.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on convective flow and heat transfer in 3D inclined enclosure with hot solid body and discrete cooling

Sivasankaran

Ahmed

2020

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Purpose This study aims to deal the numerical simulation on buoyant convection and energy transport in an inclined cubic box with diverse locations of the heater and coolers. Design/methodology/approach The left/right walls are cooled partially whereas the other walls are kept adiabatic. In the left/right walls, three different locations of the cooler are examined, whereas heater moves in three locations in the middle of the enclosed box. The governing models are numerically solved using the finite-element method. Findings The simulations are done on several values of the Rayleigh number and cavity inclination angles and different locations of the heater and coolers. The results are presented in the form of streamlines, isosurfaces and Nusselt numbers for different values of parameter involved here. It is recognized that the inclination of the box and the locations of the coolers strongly influence the stream and energy transport inside the enclosed domain. Research limitations/implications The present investigation is conducted for steady, laminar, three-dimensional natural convective flow in a box for different locations of cooler and tilting angles of a cavity. The study might be useful to the design of solar collectors, room ventilation systems and electronic cooling systems. Originality/value This work examines the effects of different locations of cooler and tilting angles of a cavity on convective heat transfer in a 3D cavity. The study is useful for thermal engineering applications.

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Natural convection in an inclined parallelogrammic porous enclosure under the effect of magnetic field

Cited by 10 publications

References 8 publications

Homotopic simulation of MHD bioconvective flow of water-based hybrid nanofluid over a thermal convective exponential stretching surface

Homotopic simulation of MHD bioconvective flow of water-based hybrid nanofluid over a thermal convective exponential stretching surface

Heatline visualization of natural convection heat transfer for nanofluids confined within parallelogrammic cavities in presence of discrete isoflux sources

Numerical study on convective flow and heat transfer in 3D inclined enclosure with hot solid body and discrete cooling

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