Effect of Heat Source Position in Fluid Flow, Heat Transfer and Entropy Generation in a Naturally Ventilated Room

Alghaseb, Mohammed; Hassen, Walid; Mesloub, Abdelhakim; Kolsi, Lioua

doi:10.3390/math10020178

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…The aforementioned sources provide thermal energy, which may be applied to various tasks, including cooking, heating, and producing electricity. A study by M. A. Alghaseb et al [11] used 3D numerical analysis to look into a room with good air flow and a single heat source. They found that where the heating device is placed has a big effect on how the flow behaves and how high it goes in the room when it is placed on a vertical surface close to the extraction opening.…”

Section: Introductionmentioning

confidence: 99%

The detrimental effect of thermal exposure and thermophoresis on MHD flow with combined mass and heat transmission employing permeability

MIRZA,

Dey,

Choudhury

2024

International Journal of Applied Mechanics and Engineering

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We look at the viscous free-convective transitional magnetohydrodynamic thermal and mass flow over a plate that is always perforated and standing upright through permeable media while thermal radiation, a thermal source, and a chemical reaction are all going on. There is additional consideration for the Soret effect. The plate receives a normal application of a transversely consistent magnetic field. The magnetic Reynolds number is considerably lower considering the axial applied magnetic field instead of the induced magnetic field. The models that control mass, heat, and fluid flow are turned into two-dimensional shapes, and the answers are found by running numerical simulations using the MATLAB algorithm bvp4c. In realistic circumstances, the outcomes have been illustrated graphically. Several fluid properties have been found to have an impact on velocity, temperature, and concentration profiles. There is noticeable increase in velocity along with the growth of the permeability parameter and Soret number. Other dimensionless parameters have a significant impact on the fluid velocity. Likewise, the temperature profile diminishes as the radiation parameter has increased. The concentration distribution falls as the heat source parameter expands. Also, the analysis is encompassed in tabular form for the shearing stress, Nusselt number, and Sherwood number. The combined knowledge of heat and mass moving through viscous flows can be used to make a wide range of mechanisms and processes. These include biological reactors, therapeutic delivery systems, methods of splitting, aerodynamic aircraft design, and modeling for sustainability. It also optimizes automotive radiators and engine efficiency, and it improves cooling systems.

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Section: Introductionmentioning

confidence: 99%

The detrimental effect of thermal exposure and thermophoresis on MHD flow with combined mass and heat transmission employing permeability

MIRZA,

Dey,

Choudhury

2024

International Journal of Applied Mechanics and Engineering

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“…Tominaga [24] conducted numerical simulations (CFD) to study the airflow around isolated gable-roofed buildings with different roof slopes and found significant differences in the flow fields for slope ratios of 3:10 and 5:10. Additionally, there are also studies related to wind towers, wind catchers, Mansard roofs, and other structures on rooftops [25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

CFD Analysis of Building Cross-Ventilation with Different Angled Gable Roofs and Opening Locations

Shi,

Zhao,

Liu

2023

Buildings

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The geometric shape of the roof and the opening position are important parameters influencing the internal cross-ventilation of buildings. Although there has been extensive research on natural ventilation, most of it has focused on flat or sloping roofs with the same opening positions. There is still limited research on the impact of different opening positions and sloping roofs on natural ventilation. In this study, computational fluid dynamics (CFD) was used to investigate the air exchange efficiency (AEE) in general isolated buildings. These buildings encompassed three distinct opening configurations (top–top, top–bottom, and bottom–top) and six varying slope angles for gable roofs (0°, 9°, 18°, 27°, 36°, and 45°). Computational simulations were carried out using the SST k-omega turbulence model, and validation was performed against experimental data supplied by the Japanese AIJ Wind Tunnel Laboratory. Grid independence validation was also conducted to ensure the reliability of the CFD simulation results. The study revealed that the highest AEE was 48.1%, achieved with the top–bottom opening configuration and a gable roof slope angle of 45°. Conversely, the lowest AEE was 31.4%, attained with the bottom–top opening configuration and a gable roof slope angle of 27°. Furthermore, it was observed that when the opening configuration was set to top–top and bottom–top, the slope angle of the gable roof had minimal influence on AEE, with an average AEE of only around 33%. When the opening configuration was top–bottom, it was found that there was a positive correlation between the gable roof slope angle and AEE.

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The Relation Between Airflow Pattern and Indoor Air Quality in a Hybrid Personalized Ventilation with Under-Floor Air Distribution System

2022

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Effect of Heat Source Position in Fluid Flow, Heat Transfer and Entropy Generation in a Naturally Ventilated Room

Cited by 3 publications

References 37 publications

The detrimental effect of thermal exposure and thermophoresis on MHD flow with combined mass and heat transmission employing permeability

The detrimental effect of thermal exposure and thermophoresis on MHD flow with combined mass and heat transmission employing permeability

CFD Analysis of Building Cross-Ventilation with Different Angled Gable Roofs and Opening Locations

The Relation Between Airflow Pattern and Indoor Air Quality in a Hybrid Personalized Ventilation with Under-Floor Air Distribution System

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