Numerical Comparison of Triangular and Sinusoidal External Vibration Effects on the 3D Porous Drying Process

Khedher, Nidhal Ben; Ramzi, Raiminor; Alatawi, Ibrahim

doi:10.48084/etasr.3486

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…Considerable researches have been developed Keywords: CVFEM ; Double partition brick ; Drying ; Gmsh ; Porous media more and more efficient methods (acoustic [6] and ultrasonic [7]). Recently, the employment of vibration technology in porous media has been an interesting subject and it has been found to enhance the coupled heat and mass transfer [8,9].…”

Section: Introductionmentioning

confidence: 99%

3D Thermal Study of Double Partition Brick Drying

2023

MPS

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In porous media, heat and mass transfer is a classical model of transport and it is one of the most energy-intensive industrial processes with a wide variety of applications. This present paper is developed in order to explain the coupled heat and mass transfer that arise during drying process. A free mesh generator Gmsh is used and a 3-D unstructured Control Volume Finite Element Method (CVFEM) is employed to simulate the transport phenomena with a convective drying. Several simulation results, that depict the transport phenomenon inside a porous brick are presented and analyzed. Indeed, thanks to this numerical model, we can observe the three-dimensional distribution of temperature, liquid saturation and pressure during double partition brick drying.

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Section: Introductionmentioning

confidence: 99%

3D Thermal Study of Double Partition Brick Drying

2023

MPS

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“…As a result of the daily and seasonal temperature variation of the surface, it is also present in certain technical fields, but we can find it as well in some biological and biotechnological systems [10]. Recently, authors in [11] proposed a three-dimensional model to study the effect of external vibrations on the drying process of a porous material.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Investigation of the Free Flow in a Square Porous Cavity with Non-Uniform Heating on the Lower Wall

Mekroussi

Kherris

Zebbar

et al. 2022

Eng. Technol. Appl. Sci. Res.

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Natural convection in a steady state of incompressible air inside a cavity’s porous with a heated low wall of a sinusoidal profile is investigated numerically in this paper. The upper horizontal wall is kept cold while the two sides are thermally insulated. The proposed physical model was developed and studied with two-dimensional conditions, using the finite element method and adapting the Darcy-Brinkman model. This paper examines the laminar natural convection in a square porous cavity for different Rayleigh numbers (10 ≤ Ra ≤ 104), aspect ratios (0.25 ≤ AR ≤ 1.0), and sinusoidal temperature amplitude (0.25 ≤ λ ≤ 1.0). Moreover, the variation effect of Ra, AR, and λ on isotherms, streamlines, and the mean and local Nusselt numbers has been presented and analyzed. The results showed that an increase in the sinusoidal thermal amplitude, mean Nusselt number, and AR reduced somewhat the Rayleigh number. This provided a solution in which the mean Nusselt number increased by increasing the sinusoidal thermal amplitude and the Rayleigh number. On the other hand, it decreases slightly by increasing the AR. In addition, the convection transfer mechanism is the main mode when the Rayleigh number is high. Thus, it was found that the Darcy number also has an effect on heat transmission. The obtained results were compared with those found in the literature and were found to be in good accordance.

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“…Very recently, Ben Khedher et al. have studied a numerical comparison of triangular and sinusoidal external vibration effects on the 3D porous drying process …”

Section: Introductionmentioning

confidence: 99%

Enhancement of 3D Mass and Heat Transfer within a Porous Ceramic Exchanger by Flow-Induced Vibration

et al. 2022

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This work investigates heat transfer enhancement for a porous ceramic heat exchanger. The effect of flow-induced vibration of exchanging air flow through porous tube banks has been tested. A numerical model able to assess the vibration effect on heat and mass transfer inside a porous ceramic exchanger has been carefully developed. A three-dimensional unstructured control volume finite element method (CVFEM) is developed to simulate the transport phenomena that arise during convective exchange. In this respect, several numerical tests have been conducted. The time evolution of temperature, liquid saturation, and pressure of the porous domain are analyzed and compared for two cases: with and without vibration. It is found that the vibration highly enhances the heat and mass transfer inside the ceramic exchanger. As a result, the gain of exchanging time to reach the thermal equilibrium between the hot air and the porous domain was 75% for the case of air vibration under sawtooth type at a frequency of f v = 5 Hz and V max = 10 m/s compared to nonvibrating exchange.

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Numerical Comparison of Triangular and Sinusoidal External Vibration Effects on the 3D Porous Drying Process

Cited by 4 publications

References 17 publications

3D Thermal Study of Double Partition Brick Drying

3D Thermal Study of Double Partition Brick Drying

A Numerical Investigation of the Free Flow in a Square Porous Cavity with Non-Uniform Heating on the Lower Wall

Enhancement of 3D Mass and Heat Transfer within a Porous Ceramic Exchanger by Flow-Induced Vibration

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