Computational Investigation of Conjugate Heat Transfer in Cavity Filled With Saturated Porous Media

Abdulkadhim, Ammar; Abed, Azher M.; Al‐Farhany, Khaled

doi:10.5098/hmt.11.12

Cited by 18 publications

(11 citation statements)

References 36 publications

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“…Also, Al-Farhany and Abdulkadhim [22] shows that when the wall thickness increases, the Nusselt number decreases while it increases when the modified Rayleigh number increases. The conjugate natural convection studied numerically by Abdulkadhim et al [23]. It is found that when the Wall thickness increases, the conduction heat transfer dominated.…”

Section: Heat Transfer Inside Cavity With Porous Mediamentioning

confidence: 99%

Review of the Effects of Stationary/Rotating Cylinder in a Cavity on the Convection Heat Transfer in Porous Media with/without Nanofluid

Abdulsahib¹,

Al‐Farhany²

2021

MMEP

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The mixed convective heat transfer has many multiple engineering applications, such as solar collectors, electronic equipment cooling and heat exchanger, and geothermal engineering. This work presents comprehensive coverage of a wide range of published studies in terms of convection heat transfer inside the enclosure in recent years. The convective heat transfer in porous media with/without nanofluid, and the effect of stationary/rotating cylinder inside cavities, as well as the position of the cylinder, had been addressed and discuss to draw the main conclusions and recommendations. It is worthy to mention that the mixed convective with the effect of entropy generation with inner bodies in enclosure has been investigated less than the other simple enclosure shapes due to its complexity. The researchers can be extended their future studies by adding the MHD effects with mixed conviction in simple/complex shapes of enclosure. This study gives an important and useful summary for provides researchers of heat transfer in academic and industrial. At the end of this investigation, the governing equations of the 2-D mixed convection in an enclosure filled with porous medium, and nanofluid addressed.

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Section: Heat Transfer Inside Cavity With Porous Mediamentioning

confidence: 99%

Review of the Effects of Stationary/Rotating Cylinder in a Cavity on the Convection Heat Transfer in Porous Media with/without Nanofluid

Abdulsahib¹,

Al‐Farhany²

2021

MMEP

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“…-At the side walls (left and right) x/L Nu x (Völker et al 44 ) Nu x (Present study Equation (18) (18) where h x is the local heat transfer coefficient, which can be estimated from the relation ( where AR is the aspect ratio of the triangle, which can be given as follows:…”

Section: Problem Descriptionmentioning

confidence: 99%

“…The dimensionless governing Equations (14)(15)(16)(17)(18)(19) are solved numerically utilizing the finite volume scheme with the specified boundary conditions. The SIMPLE algorithm is applied to combine the momentum and continuity equations.…”

Section: Solution Proceduresmentioning

confidence: 99%

“…Their findings noted that the exchange of heat augments with an augment of the Rayleigh number, but it reduces as the Hartmann number augments. Al‐Farhany and Abdulkadhim and Abdulkadhim et al inspected the natural convection in a square porous enclosure with a partly heated left‐vertical wall. They considered the horizontal cavity walls as adiabatic and the other right‐vertical wall was held at a fixed cold temperature.…”

Section: Introductionmentioning

confidence: 99%

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Natural convection in a triangular cavity filled with air under the effect of external air stream cooling

Saleem

Alshara

2019

Heat Trans. Asian Res.

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Natural convection in a triangular cavity filled with air is investigated numerically. In this paper, the cavity is exposed to air stream cooling exerted on its sides and it is heated by a fixed heat flux from the base. The air inside the cavity is assumed to be laminar and obeying Boussinesq approximation. The governing equations are solved numerically using the finite volume technique with SIMPLE algorithm. The results are achieved with a range of Rayleigh number (104 < Ra < 107), free stream Reynolds number (103 < Re∞ < 1.5 × 104), four aspect ratios (AR = 0.25, 0.5, 0.866, and 1) and five inclination angles (ϕ = 0°, 30°, 45°, 60°, 90°). The influence of these parameters is displayed on the stream function, isotherms lines, local and average Nusselt numbers. The results reveal that the heat transfer rate increases as Rayleigh number, free stream Reynolds number and AR increase. The highest heat transfer rate is obtained at ϕ = 0° while the lowest one is obtained at ϕ = 90°. Furthermore, as the AR augments, the local and average Nusselt numbers are enhanced and the stream function is formed of two symmetric counter‐rotating vortices.

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“…They concluded that the Middle-Middle arrangement produces higher values of average Nusselt numbers. Abdulkadhim et al [27] used finite element techniques and concluded that increasing the aspect ratio will decrease the heat transfer rate and increase the fluid flow strength.…”

Section: Introductionmentioning

confidence: 99%

Effect of partially thermally active wall on natural convection in porous enclosure

Abdulkadhim¹,

Abed²,

Mohsen³

et al. 2018

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A numerical investigation is presented to illustrate the impact of aspect ratio in a conjugate heat transfer enclosure filled with porous media and partially heated from vertical walls. The left and right walls are partially heated and cooled, respectively. The remaining partitions of the vertical walls in addition to the top and bottom walls are considered to be adiabatic. the present work is limited to two different cases: Top-Bottom (case 1) and Bottom-Top (case 2). The dimensionless Navier-Stokes governing equations are solved using the finite element method. The parameters of interest are the modified Rayleigh number 10 ≤ Ra ≤ 10 3 , the finite wall thickness 0.02 ≤ D ≤ 0.5, 0.1 ≤ Kr ≤ 10 and the aspect ratio 0.5 ≤ A ≤ 10. The results are presented in term of streamlines, isotherms and average Nusselt number for fluid phase and along the solid hot wall. The results indicated that the locations of partially active walls have great influence on heat transfer rate. I was shown that Bottom-Top arrangement gives better heat transfer rate compared to that of Top-Bottom. It was also found that by increasing the Rayleigh number, the rate of heat transfer increased. In contrast, increasing the wall thickness and aspect ratio reduced the heat transfer rate.

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Computational Investigation of Conjugate Heat Transfer in Cavity Filled With Saturated Porous Media

Cited by 18 publications

References 36 publications

Review of the Effects of Stationary/Rotating Cylinder in a Cavity on the Convection Heat Transfer in Porous Media with/without Nanofluid

Review of the Effects of Stationary/Rotating Cylinder in a Cavity on the Convection Heat Transfer in Porous Media with/without Nanofluid

Natural convection in a triangular cavity filled with air under the effect of external air stream cooling

Effect of partially thermally active wall on natural convection in porous enclosure

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