Turbulent flows around rectangular and triangular turbulators in baffled channels a computational analysis

Salmi, Mohamed; Afif, Benameur; Akgül, Ali; Jarrar, Rabab; Shanak, Hussein; Menni, Younes; Ahmad, Hijaz; Asad, Jihad

doi:10.2298/tsci22s1191s

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…The model established by Mohammed Amine Amraoui et al [12] concerns a numerical study on a plane air solar collector equipped with square obstacles where they gave the diagram of the model after having made the mesh of this model which allowed them to find results on the temperature distribution, the speed and the turbulence field and finally they presented graphs on the average Nusselt number, the average friction coefficient versus the Reynolds number. The study, which aims to improve the efficiency of the solar collector by introducing two fluid flow paths, was carried out by Mohammed Amine Amraoui et al [13], who compared their results with those reported in the existing literature. These results will contribute to the development of advanced solar collector designs and promote sustainable use of solar energy.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional numerical analysis of the thermo-aerodynamic characteristics of air- plane solar collectors and improving thermal efficiency through baffle design: a comparative CFD study

Amraoui

2024

Preprint

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This work consists of an aerodynamic and thermal study of four types of flat air solar collectors equipped with different baffles and which are: the solar collector with baffles in a triangular shape (SCTS), the solar collector with baffles in a small V shape (SCSV), the solar collector with large V baffles (SCLV) and Solar collector with transverse baffles in a triangular shape (SCTBTS). We used computational fluid dynamics (CFD) to provide a set of results on the velocity and temperature fields that resolve the turbulence in the air stream for the three models studied. The introduction of baffles to the air stream will cause an increase in speed and turbulence which improves heat transfer between the absorber and the heat transfer fluid.

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Section: Introductionmentioning

confidence: 99%

Three-dimensional numerical analysis of the thermo-aerodynamic characteristics of air- plane solar collectors and improving thermal efficiency through baffle design: a comparative CFD study

Amraoui

2024

Preprint

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Mathematical analysis and dynamical transmission of monkeypox virus model with fractional operator

Farman,

Akgül,

Garg

et al. 2023

Expert Systems

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Monkeypox virus is one of the major causes of both smallpox and cowpox infection in our society. It is typically located next to tropical rain forests in remote villages in Central and West Africa. The disease is brought on by the monkeypox virus, a member of the Orthopoxvirus genus and the Poxviridae family. For analysis and the dynamical behaviour of the monkeypox virus infection, we developed a fractional order model with the Mittag‐Leffler kernel. The uniqueness, positivity, and boundedness of the model are treated with fixed point theory results. A Lyapunov function is used to construct both local and global asymptotic stability of the system for both endemic and disease‐free equilibrium points. Finally, numerical simulations are carried out using the effective numerical scheme with an extended Mittag‐Leffler function to demonstrate the accuracy of the suggested approaches.

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Enhancing Sustainable Development: Assessing a Solar Air Heater (SAH) Test Bench through Computational and Experimental Methods

Bakri,

Benguesmia,

Ketata

et al. 2024

Sustainability

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A solar air heater is a device that gathers solar radiation and converts it into heat. The core principle involves air moving through a solar collector, where sunlight naturally increases the air temperature within the collector. The benefit of this technology lies in its affordability and simplicity. The implementation of a solar air heater (SAH) test bench holds significant promise in addressing both global change and sustainable development objectives. The primary goal of this study is to examine the aerodynamic configuration of a novel solar air heater test bench accessible at the Laboratory of Electro-Mechanic Systems (LASEM). This study was carried out using the standard k-ω turbulence model with the use of the ANSYS Fluent 17.0 software. The results indicate that the velocity at the inlet directly influences the velocity fields, temperature, static pressure, and characteristics of turbulence. Furthermore, the numerical findings confirmed that the temperature and velocity profiles in the second channel are in good concordance with the experimental findings in the case of a fan, placed alongside the insulation, operating in a delivery mode. Based on these results, the computational approach is validated. When comparingforced convection to natural convection under identical conditions, there was a notable increase in the energy efficiency, with forced convection showing a significant improvement of approximately 31.8%. Indeed, the range of temperatures reached with the proposed design, is highly beneficial for both industrial and household applications.

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Turbulent flows around rectangular and triangular turbulators in baffled channels a computational analysis

Cited by 3 publications

References 16 publications

Three-dimensional numerical analysis of the thermo-aerodynamic characteristics of air- plane solar collectors and improving thermal efficiency through baffle design: a comparative CFD study

Three-dimensional numerical analysis of the thermo-aerodynamic characteristics of air- plane solar collectors and improving thermal efficiency through baffle design: a comparative CFD study

Mathematical analysis and dynamical transmission of monkeypox virus model with fractional operator

Enhancing Sustainable Development: Assessing a Solar Air Heater (SAH) Test Bench through Computational and Experimental Methods

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