Effect of Nanoparticles on the Hysteresis Loop in Mixed Convection within a Two-Sided Lid-Driven Inclined Cavity Filled with a Nanofluid

Dahani, Youssef; Amahmid, A.; Hasnaoui, M.; Mansouri, A. El; Alouah, M.; Hasnaoui, Safae; Rehhali, Khaoula; Ouahas, Mustapha

doi:10.1080/01457632.2017.1421130

Cited by 6 publications

(3 citation statements)

References 35 publications

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“…[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. 26,27 performed numerical modeling by applying Reynolds-averaged Navier-stokes (RANS) to simulate the heat transfer in an exchanger equipped with a set of perforated fins.…”

Section: Introductionmentioning

confidence: 99%

“…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%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

show abstract

“…is apply us in industrial domain including cooling of electronic circuit [1], thermal performance of energy efficiency [2], flow and heat transfer in solar collectors [3], lubrication technologies [4], geothermal heat exchangers [5][6][7][8] and many others. In the literature, numerous analytical models, numerical and experimental researches have done on the mixed convection heat transfer in different geometries [9,10]. A literature in this field is widespread by the researchers and very important in industry.…”

Section: Introductionmentioning

confidence: 99%

Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced Convection

Salhi

Amghar

Bouali³

et al. 2020

Modelling and Simulation in Engineering

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In the present paper, we report a numerical study of dynamic and thermal behavior of the incompressible turbulent air flow by forced convection in a two-dimensional horizontal channel. This one contains the complicated form of the deflector which has been studied by varying the inclination angle from φ = 40°, φ = 55° to φ = 65°. The baffles are mounted on lower and upper walls of the channel. The walls are maintained at a constant temperature (375 K), the inlet velocity of air is Uint = 7.8 m/s, and the Reynolds number Re = 8.73 × 104. A specifically developed numerical model was based on the finite-volume method to solve the coupled governing equations and the SIMPLE (Semi Implicit Method for Pressure Linked Equation) algorithm for the treatment of velocity-pressure coupling. For Pr = 0.71, the results obtained show that (i) the streamlines and isotherms are strongly affected by the inclinations angles at Re = 8.73 × 104, (ii) the friction coefficient near the baffles increases under the angle exchange effect, and (iii) for a constant Re, the local Nusselt number at the walls of the channel varies with increasing the inclination angle of the deflector. Furthermore, the deflectors are generally used to change the direction of the structure of flow and also to increase the turbulence levels. We can conclude that the contribution of inclined baffles improves the increase of heat and mass transfer in which the Nusselt number at a certain angle increases noticeably.

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LBM Simulation of Mixed Convection in a Tilted Lid-Driven Cavity Cooled with a Nonuniform Temperature Distribution in the Presence of Radiation

Dahani

Hasnaoui

Amahmid

et al. 2023

J Eng Phys Thermophy

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Effect of Nanoparticles on the Hysteresis Loop in Mixed Convection within a Two-Sided Lid-Driven Inclined Cavity Filled with a Nanofluid

Cited by 6 publications

References 35 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

Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced Convection

LBM Simulation of Mixed Convection in a Tilted Lid-Driven Cavity Cooled with a Nonuniform Temperature Distribution in the Presence of Radiation

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