Effects of uniform rotation and porous layer on free convection in an enclosure having local heat source

Mikhailenko, Stepan A.; Sheremet, Mikhail А.; Mahian, Omid

doi:10.1016/j.ijthermalsci.2019.01.002

Cited by 34 publications

(10 citation statements)

References 29 publications

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“…Mikhailenko et al have performed some significant research into the effect of uniform rotation on thermal convection in closed systems, which can include internal heat generation. Recently, Mikhailenko et al 35 investigated the effects of uniform rotation on unrestricted convection in a closed porous layer with a local heat generation. They concluded that the mass, momentum, and heat transport are all suppressed as the Taylor number increases, whereas the heat transfer rate decreases as the porous layer thickness increases.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of heat and mass transport by double‐diffusive magnetoconvection in an electrically conducting fluid under sinusoidal/non‐sinusoidal rotational modulation

et al. 2022

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In this paper, we study the effects of rotational modulation on heat and mass transport due to double-diffusive magnetoconvection in an electrically conducting fluid. In the study, different modes of rotational modulation are considered. Using a perturbation method, a Ginzburg-Landau equation which is nonautonomous is obtained for the modulation amplitude. The effect of rotational modulation on the heat and mass transfer is studied. For the investigation of the effect of buoyancy ratio on the onset of convection, the system of Lorenz type equations is solved using the recent multistage spectral relaxation method. Further-

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Section: Introductionmentioning

confidence: 99%

A numerical study of heat and mass transport by double‐diffusive magnetoconvection in an electrically conducting fluid under sinusoidal/non‐sinusoidal rotational modulation

et al. 2022

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“…They found that the rotation and viscoelasticity initiate the oscillatory mode, whereas compressibility delays the instability on the onset of thermal instability. Later, Shivakumara et al (2011), Desaive et al (2002, , 2010), Falsaperla et al (2011, 2016, Yadav and Kim (2014a), Yadav et al (2014Yadav et al ( , 2016Yadav et al ( , 2017, Chand et al (2017), Haddad (2017), Mahajan and Sharma (2019), Capone and Gentile (2018), Babu et al (2012) and Mikhailenko et al (2019) considered the weight of rotation on the start of convection under various settings. The effect of rotation on the transient MHD flow of a reactive second grade fluid through a porous medium between two parallel plates was examined by Krishna and Reddy (2019).…”

Section: Introductionmentioning

confidence: 99%

Effects of rotation and varying gravity on the onset of convection in a porous medium layer: a numerical study

Yadav

2020

WJE

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Purpose The purpose of this study is to examine the influence of rotation and varying gravitational strength on the onset of thermal convection in a porous medium layer numerically. The porous layer is acted to uniform rotation and inconsistent downward gravitational field which changing with depth from the layer. The authors presented three categories of gravitational strength deviancy, namely, linear, parabolic and exponential. Design/methodology/approach The higher-terms Galerkin weighted residual procedure is applied to get the eigenvalue of the problem. Findings The results illustrate that both rotation parameter and gravity variation parameter suspend the arrival of convection. The measurement of the convection cells decreases on enhancing the rotation parameter and gravity variation parameter. Originality/value It is also found that the scheme is more stable for category exponential, whereas it is more unstable for category parabolic.

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“…A numerical and analytical investigation was done for combined thermal and moisture conventions in an enclosure filled with a partially porous medium to enhance the moisture transport in the thermal energy storage unit [ 9 ]. The authors in Mikhailenko et al [ 10 ] discussed the mechanism to address the effects of a uniform rotation and a porous layer in a local heat source electronic cabinet, where it studied the impacts of the Rayleigh, Taylor, and Darcy numbers and the porous layer thickness on hydro-thermodynamics. The authors in Saleh et al [ 11 ] investigated the unstable convective flow in a vertical porous layer inside an enclosure due to a flexible fin.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Amplitude and Local Thermal Non-Equilibrium Design on Natural Convection within NanoflUid Superposed Wavy Porous Layers

et al. 2021

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A numerical study is presented for the thermo-free convection inside a cavity with vertical corrugated walls consisting of a solid part of fixed thickness, a part of porous media filled with a nanofluid, and a third part filled with a nanofluid. Alumina nanoparticle water-based nanofluid is used as a working fluid. The cavity’s wavy vertical surfaces are subjected to various temperature values, hot to the left and cold to the right. In order to generate a free-convective flow, the horizontal walls are kept adiabatic. For the porous medium, the Local Thermal Non-Equilibrium (LTNE) model is used. The method of solving the problem’s governing equations is the Galerkin weighted residual finite elements method. The results report the impact of the active parameters on the thermo-free convective flow and heat transfer features. The obtained results show that the high Darcy number and the porous media’s low modified thermal conductivity ratio have important roles for the local thermal non-equilibrium effects. The heat transfer rates through the nanofluid and solid phases are found to be better for high values of the undulation amplitude, the Darcy number, and the volume fraction of the nanofluid, while a limit in the increase of heat transfer rate through the solid phase with the modified thermal ratio is found, particularly for high values of porosity. Furthermore, as the porosity rises, the nanofluid and solid phases’ heat transfer rates decline for low Darcy numbers and increase for high Darcy numbers.

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Effects of uniform rotation and porous layer on free convection in an enclosure having local heat source

Cited by 34 publications

References 29 publications

A numerical study of heat and mass transport by double‐diffusive magnetoconvection in an electrically conducting fluid under sinusoidal/non‐sinusoidal rotational modulation

A numerical study of heat and mass transport by double‐diffusive magnetoconvection in an electrically conducting fluid under sinusoidal/non‐sinusoidal rotational modulation

Effects of rotation and varying gravity on the onset of convection in a porous medium layer: a numerical study

Impacts of Amplitude and Local Thermal Non-Equilibrium Design on Natural Convection within NanoflUid Superposed Wavy Porous Layers

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