Numerical Study of Natural Convection in Porous Square Enclosure Non-Uniformly Heated From the Partitions

Khansila, Paweena; Witayangkurn, Supot

doi:10.12732/ijpam.v96i2.5

Cited by 4 publications

(3 citation statements)

References 18 publications

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“…Khansila et al [9] have studied numerically the natural convection in a square enclosure heated from bellow contained two partitions attached to its hot wall, they have studied the effect of high an location of the partition, The results are presented in forms of streamlines, isotherms and heat lines. It can be found that the flow field is single cell when the height of the partitions is less than 0.5.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of heat transfer in a flat plat thermal solar collector with partitions attached to its glazing

Laaraba¹

2019

THERM SCI

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Heat transfer in the air-gap of a horizontal flat plat thermal solar collector contain partitions attached to its glazing has been studied numerically. The absorber and the glazing are kept at constant and different temperatures, while the vertical walls (insulation) were kept adiabatically. A conjugate formulation was used for mathematical formulation of the problem and a computer program based on the control volume approach and the SIMPLER algorithm was used. The main aim of the current paper is to study numerically the effects of number of fins and their length on the air pattern and heat transfer. It was observed that the heat transfer rate through the air-gap is affected greatly and hence can be controlled by the number of attached fins to the glazing of the solar collector as well as the fin lengths, and the addition of partitions reduces the heat losses by convection by 90%.

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Section: Introductionmentioning

confidence: 99%

Numerical study of heat transfer in a flat plat thermal solar collector with partitions attached to its glazing

Laaraba¹

2019

THERM SCI

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“…The location of the fins on the inner face of the glazing and their length Lp in a divided rectangular cavity, have been studied in the case of natural convection coupled with radiation [7]. Still in the case of natural convection, the effect of the high location of the partition on the warm wall a heated square enclosure has been studied [8,9]. A study was based on the effect of thickness and thermal conductivity fins [10].…”

Section: Introductionmentioning

confidence: 99%

CFD simulation of natural convection and heat transfer in a flat solar thermal collector with fins on the glazing - horizontal case

Laaraba

2019

Int. J. Energetica

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This study is based on a CFD simulation of a flat horizontal solar thermal collector containing fins on its inner face of the glazing. The walls of the solar collector with insulation are considered adiabatic and the rest of the walls are at constant different temperatures. The principal objective of this work is to study the effects of the number of fins that changed from 0 to 30, as well as their length varied from 0 to 0.8 on the air flow and heat transfer characteristics. It has been observed that the heat transfer rate is strongly affected by the number of fins and the length of the fins. The obtained result showed that the increase of the fins reduces the heat loss by convection by 54 %.

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“…At high Rayleigh numbers the heat transfer reduction is affected by secondary buoyancy forces, generated by the partition. (Khansila et al, 2014), have studied numerically the natural convection in a square enclosure heated from bellow contained two partitions attached to its hot wall, they have studied the effect of a high location of the partition. The results are presented in forms of streamlines, isotherms and heat lines.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Natural Convection in the Air Gap of a Vertical Flat Plat Thermal Solar Collector with Partitions Attached to Its Glazing

Laaraba

Khechekhouche²

2018

Indonesian J. Sci. Technol

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Heat transfer in the air gap of a vertical flat plat thermal solar collector containing partitions attached to its glazing has been studied numerically. The absorber and the glazing are kept at constant and different temperatures, while the vertical walls (insulation) were kept adiabatically. A conjugate formulation was used for mathematical formulation of the problem and a computer program based on the control volume approach and the simpler algorithm was used. The main aim of the current paper is to study numerically the effects of number of fins and their length on the air pattern and heat transfer. Experimental results showed that interesting phenomena happened, especially in the heat transfer process. It was observed that the heat transfer rate through the air gap is affected greatly and can be controlled by the number of attached fins to the glazing of the solar collector as well as the fin lengths, and the addition of partitions reduces the heat losses by convection by 60%. This study will brings good advantages for further uses, especially related to the heat transfer phenomena in the solar applications.

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Numerical Study of Natural Convection in Porous Square Enclosure Non-Uniformly Heated From the Partitions

Cited by 4 publications

References 18 publications

Numerical study of heat transfer in a flat plat thermal solar collector with partitions attached to its glazing

Numerical study of heat transfer in a flat plat thermal solar collector with partitions attached to its glazing

CFD simulation of natural convection and heat transfer in a flat solar thermal collector with fins on the glazing - horizontal case

Numerical Simulation of Natural Convection in the Air Gap of a Vertical Flat Plat Thermal Solar Collector with Partitions Attached to Its Glazing

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