Analysis of the thermohydrodynamic behavior of a cooling system equipped with adjustable fins crossed by the turbulent flow of air in forced convection

Salhi, Jamal‐Eddine; Salhi, Mourad; Amghar, Kamal; Zarrouk, Tarik; Salhi, Najim

doi:10.1007/s40095-021-00446-5

Cited by 8 publications

(3 citation statements)

References 32 publications

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“…One of the efficient passive methods for heat transfer augmentation is utilizing inserts (as turbulator or swirl generators) in the channels to produce vortex flows like twisted tape [1][2][3][4][5][6] , conical ring, 7 wire coil, 8 corrugated channel, 9,10 extended surface, [11][12][13] rib, 14 baffle. [15][16][17][18][19][20] Also, there are some works in which various kinds of inserts created unique geometries for heat transfer enhancement. [21][22][23][24] Souidi and Bontemps 25 studied the fluid flow structure in a two-phase model in a small channel considering smooth and perforated fins.…”

Section: Introductionmentioning

confidence: 99%

“…So, in the past 20 years, much work has been carried out numerically and experimentally to understand the thermohydrodynamic phenomena. One of the efficient passive methods for heat transfer augmentation is utilizing inserts (as turbulator or swirl generators) in the channels to produce vortex flows like twisted tape 1–6 , conical ring, 7 wire coil, 8 corrugated channel, 9,10 extended surface, 11–13 rib, 14 baffle 15–20 . Also, there are some works in which various kinds of inserts created unique geometries for heat transfer enhancement 21–24 …”

Section: Introductionmentioning

confidence: 99%

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Turbulence and thermo‐flow behavior of air in a rectangular channel with partially inclined baffles

Salhi¹,

Ajarostaghi

Zarrouk³

et al. 2022

Energy Science & Engineering

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In this paper, the thermal performance improvements of a heat removal system like an electronic system have been analyzed. The studied case is a horizontal channel in which two partially inclined baffles are attached with variable height and number. The channel is crossed by a forced convective flow of a cooling fluid (air). This numerical work evaluates the influences of the height and number of the baffles on the enhancement of the heat transfer rate. The mathematical model of this system is composed of nonlinear partial equations that the analytical solution for them is very complex, hence the need for numerical analysis is mandatory with the aid of a finite volume method. Accordingly, The numerical results are presented in axial and transverse velocity, temperature, local and average Nusselt number, local friction coefficient, pressure drop, heat transfer rate, and turbulence kinetic energy. The results revealed that it is possible to improve the thermal performance of the considered system by adopting designs that allow the maximum heat transfer rate with the minimum energy loss. In addition, results show that at the lowest Reynolds number (Re = 10,000), as the height of baffles rises from 0.01 to 0.03 m (growth by 200%), the heat transfer rate augments about 59.09%. Moreover, at the highest evaluated Reynolds number (Re = 87,300), by increasing the height of baffles up to 200%, the heat transfer rate increases by approximately 50.53%. Furthermore, employing a higher number of baffles leads to more heat transfer rates and a significant pressure drop.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Turbulence and thermo‐flow behavior of air in a rectangular channel with partially inclined baffles

Salhi¹,

Ajarostaghi

Zarrouk³

et al. 2022

Energy Science & Engineering

Self Cite

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show abstract

“…They examined the problem for Re ranging from 100 to 2000 and established that as the Reynolds number increased, the thermal energy transport coefficient improved. Salhi et al [15]adopted a new technique to improve the heat transfer efficiency of a cooling system. They inserted vertical and rotating baffles in a rectangular-section channel to create discontinuities in the flow.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Heat Transfer and Turbulent Flow in a Baffled Pipe with Different Arrangements

Al-Lami

Mohammed²,

Ali³

et al. 2022

EJENG

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In the heat transfer, fluid flow and energy fields, baffles are an advanced enhancer to improve heat transfer and fluid mixing by working as an obstacle to the flow particles and then increasing the turbulence. The present paper numerically investigates the thermal performance of a circular pipe with a centralized baffle in two arrangements, with a Reynolds number (Re) (ranging from 10,000-50,000) under constant wall heat flux boundary conditions. Ansys Fluent software is used to solve the flow field considering six conical baffles with different Pitch ratios (PR) (from 1 to 5). Results show that baffles shape, arrangement, and PR have a significant impact on the properties of flow and heat transfer. The obtained results show an effective role for the baffles to promote thermal performance when it is used in heated pipes. Heat transfer rate is increased for the baffled pipe by 1-2 compared with the smooth pipe. Moreover, the best value of friction factor, thermal performance, and Nusselt number is recorded at PR= 5 at Re=30000 in the baffled pipe for the second arrangement.

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The Influence of Reynolds Number and Baffles on the Thermos-Hydrodynamic Behavior of Circular Pipe in Three Dimensions

Salhi

Hmidi

Zarrouk

et al. 2023

Lecture Notes in Electrical Engineering

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Analysis of the thermohydrodynamic behavior of a cooling system equipped with adjustable fins crossed by the turbulent flow of air in forced convection

Cited by 8 publications

References 32 publications

Turbulence and thermo‐flow behavior of air in a rectangular channel with partially inclined baffles

Turbulence and thermo‐flow behavior of air in a rectangular channel with partially inclined baffles

Characteristics of Heat Transfer and Turbulent Flow in a Baffled Pipe with Different Arrangements

The Influence of Reynolds Number and Baffles on the Thermos-Hydrodynamic Behavior of Circular Pipe in Three Dimensions

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