Abdesslem Jbara

• Ecole Nationale d'Ingénieurs de Monastir

This work aims to simulate the road traffic pollutants dispersion in a high-traffic area located at Sahloul-Sousse (Tunisia). Estimating road emission rates was performed by COPEERT V software. While dispersion simulation was performed by SIRANE software, this tool is crucial for simulating the transport of pollutants within and above the urban can...

Road traffic contributes to the generation of air and noise pollution in urban areas, leading to adverse effects on human health. Therefore, accurately assessing exposure to air and noise pollution from road traffic is crucial for enhancing our comprehension of human health outcomes in epidemiological research. This paper aims to evaluate the simul...

The main objective of this research is to investigate the adsorption isotherms and the optimization of the carbon dioxide (CO2) adsorption process on activated carbon (AC). The AC has been characterized by X-ray diffraction, scanning electron microscopy, and nitrogen (N2) adsorption–desorption. The CO2 isotherms measured under three adsorption temp...

Road traffic noise annoyance has been classified among the major transportation negative externalities despite the implementation of various regulatory guidelines in different parts of the world. This paper aims to evaluate and examine the impact of road traffic conditions on road noise levels and population exposure in a busy road traffic metropol...

Traffic noise disturbance was classified among the major transportation negative externalities since road traffic is the most prevalent source of urban noise. In general, this annoyance is strongly correlated with some traffic parameters, such as traffic volume, which remains the dominant factor that influences road noise levels in metropolitan are...

The present study as designed to assess the CO2 and N2 adsorption isotherms on activated carbon (AC). The AC was characterized with SEM, XRD and N2 isotherm. The CO2 and the N2 adsorption experiments on the AC are performed at 298, 308 and 328 K and modelled by Langmuir model. The preferred selectivity (αCO2/N2) was obtained with the use of the Lan...

The aim of this research is to evaluate the adsorption isotherms and the adsorption kinetics of CO2 on the zeolite ZSM-5. The sample was identified by FTIR, SEM, DRX, and N2 adsorption–desorption. The O2 adsorption isotherms of the adsorbent were evaluated at three temperature 318, 308 and 298 K with a volumetric method. Langmuir and Freundlich mod...

Résumé : Dans le présent travail nous présentons une étude numérique concernant les transferts combinés de chaleur et de masse par convection naturelle instationnaire dans un milieu poreux saturé anisotrope thermiquement et hydrauliquement. Le milieu poreux est contenu dans une enceinte rectangulaire dont les deux parois verticales sont épaisses de...

Heat and mass transfer by double diffusive natural convection and thermal radiation in a porous cavity opened at its top end, insulated at the bottom wall and filled with a fluid-saturated porous medium has been numerically investigated. A sensitivity study of heat and mass transfer to particle emissivity has been presented. The numerical results i...

Ce papier présente une étude numérique de l'écoulement et de transfert de chaleur par convection naturelle instationnaire couplée au rayonnement dans un canal vertical ouvert à ces deux extrémités et rempli d'un milieu poreux semi-transparent et saturé par une seule phase fluide. Afin d'examiner la validité de l'approximation de Rosseland, le terme...

Dans ce travail, nous présentons, une étude numérique du transfert de chaleur par convection naturelle instationnaire couplée au transfert radiatif au sein d'un lit poreux saturé par une seule phase fluide et confiné entre deux plaques verticales et isothermes. L'objectif principal est d'étudier l'effet de l'émissivité des particules solides sur le...

Entropy generation problem for unsteady natural convection and thermal radiation in a vertical porous enclosure has been performed numerically. A space-time variations study is presented for the entropy generation S gen and a parametric study based on the influence of radiatives parameters on S gen evolution is also presented and discussed. Results...

L'objectif de cette étude est la mise en place d'un code de calcul simulant l'écoulement et le transfert de chaleur par convection naturelle instationnaire couplée au transfert radiatif en présence d'un milieu poreux saturé et isotrope. Le présent travail vise à étudier l'effet des paramètres radiatifs effectifs sur le comportement thermique et dyn...

Entropy generation problem for unsteady natural convection and thermal radiation inside a vertical porous enclosure has been performed numerically. A space-time variations study is presented for the entropy generation S gen and modified Bejan number Be m. A parametric study based on the influence of radiatives parameters on S gen and Be m evolution...

Heat and mass transfer by double diffusive natural convection and thermal radiation inside a porous enclosure has been numerically investigated. A sensitivity study of fluid flow and heat and mass transfer to different controlling radiative parameters, such as the particular emissivity ε, the optical thickness τ D , the single scattering albedo ω a...

Ce travail présente une étude numérique de l'écoulement et des transferts de chaleur et de masse au sein d'un milieu poreux granulaire continu dans un canal vertical chauffé latéralement. L'objectif est d'élaborer un code de calcul simulant l'écoulement et les transferts par convection naturelle instationnaire couplée au transfert radiatif en prése...

The present work deals with a numerical study of coupled fluid flow and heat transfer by transient natural convection and thermal radiation in a vertical channel opened at both ends and filled with a fluid-saturated porous medium. The bounding walls of the channel are isothermal and gray. In the present study we suppose the validity of the Darcy fl...

L'objectif de cette étude est la mise en place d'un code de calcul simulant l'écoulement et le transfert de chaleur par convection naturelle instationnaire couplée au transfert radiatif en présence d'un milieu poreux saturé et isotrope. Le présent travail vise à étudier l'effet des propriétés radiatives effectives sur le comportement thermique et d...

The objective of this study is to prepare an effective adsorbent for CO2 capture and to provide detailed analyses of adsorption properties. For this subject, we treat the naturally Tunsian clay with amines using the wet impregnation method. CO2 adsorption, untreated clay and amine clay were characterized by FTIR SEM and BET techniques to establish...

Road traffic noise has been investigated using numerical tools.The 10 objective is the coupling between the first order traffic model known as 11 Lighthill-Whitham-Richards model and a noise prediction method based on the 12 Burgess model. As has been found from simulation results, the sound level at a 13 receiver point depends on vehicular flow ra...

The main objective of the current study is to develop a numerical code simulating the fluid flow and heat transfer in the physical system described above. We aim to study in particular the effect of the equivalent radiative properties of the porous medium on fluid flow and heat transfer behavior inside the porous material. We have presented a quali...

L'objectif de cette étude est la mise en place d'un code de calcul simulant l'écoulement et le transfert de chaleur par convection naturelle instationnaire couplée au transfert radiatif en présence d'un milieu poreux saturé et isotrope. Le présent travail vise à étudier l'effet des propriétés radiatives effectives sur le comportement thermique et d...

The present work deals with a numerical study of coupled fluid flow and heat transfer by transient natural convection and thermal radiation in a vertical channel opened at both ends and filled with a fluid-saturated porous medium. The bounding walls of the channel are isothermal and gray. In the present study we suppose the validity of the Darcy fl...

The present work deals with a numerical study of coupled fluid flow and heat transfer by transient natural convection and thermal radiation in a vertical channel opened at both ends and filled with a fluid-saturated porous medium. The bounding walls of the channel are isothermal and gray. In the present study we suppose the validity of the Darcy fl...

In modern planning, noise protection is one of the fundamental 12 requirements that should be respected before performing any kind of project 13 aiming to install a new infrastructure (roads, railroads, airports, seaports). 14 M oreover, in the environmental studies, the noise maps are essential for risk 15 assessment, identification of noise sourc...

Current study presents a numerical analysis of air pollutants 8 dispersion and noise propagation along a road axis. Traffic modeling is done by 9 using a macroscopic approach based on the first order traffic model of Lighthill 10 and Witham (1955) and Richards (1956). This model is coupled with t wo other 11 models: the first is the Gaussian plume...

Road traffic noise is an environmental nuisance which has a direct effect, especially, in the urban areas with high population density. This problem can cause discomfort among inhabitants living close to roadway infrastructure. Therefore, the aim of the present paper is to investigate the road traffic noise dispersion in nearby areas. The current f...

The purpose of this article is to prepare an effective adsorbent for CO2 capture and to provide detailed analyses of the adsorption properties. For this purpose, natural clay was modified with amine using monoethanolamine (MEA) and ethylenediamine (EDA). The effect of amine was characterized by FTIR and XRD methods. In addition, ImageJ software was...

The objective of this paper was to study CO2 adsorption on activated clay in the framework of geological storage. The activation of clay was characterized via scanning electron microscopy, N2 adsorption–desorption isotherms, and X-ray diffraction. The adsorption isotherms were generated at different temperatures, namely, 298 K, 323 K, and 353 K. Ba...

the aim of the current study is to simulate the dispersion of atmospheric pollutants (CO, NOx, VOC and PM) generated by road traffic emissions. Mathematical formulation is based on a macroscopic approach using a first-order model of traffic also known as LWR Model. LWR model is coupled with a Gaussian plume model in order to predict the space-time...

In the present study, various cap rocks have been experimentally reacted in water with supercritical CO2 in geological storage conditions (P = 8 × 10⁶ Pa and T = 80 °C) for 25 days. To characterize the potential CO2–water–rock interactions, an experimental setup has been built to provide additional information concerning the effects of structure, t...

The main objective of the present study is to characterize cap rock formation used for geological storage of carbon dioxide (CO2). The petrophysical properties of several rocks were studied before CO2 injection. This step is necessary for an understanding of CO2-brine-rock interactions. The mi-neralogical composition of several clay samples collect...

Double-diffusive natural convection in fluid-saturated porous medium inside a vertical enclosure bounded by finite thickness walls with opposing temperature, concentration gradients on vertical walls as well as adiabatic and impermeable horizontal ones has been performed numerically. The Darcy model was used to predict fluid flow inside the porous...

Entropy generation problem for unsteady natural convection and thermal radiation in a vertical porous enclosure, submitted to a uniform hot walls temperature and filled with a fluid saturated porous medium, has been performed. A time-space variations study is presented for fluid flow, heat transfer and radiative transfer irreversibilities, local en...

Heat and mass transfer by double-diffusive natural convection and thermal radiation in a porous cavity opened at its top end, insulated at the bottom wall, and filled with a fluid-saturated porous medium has been numerically investigated. The porous medium, at local thermal equilibrium assumption, is considered as a fictitious homogeneous, isotropi...

Heat and mass transfer by double-diffusive natural convection and thermal radiation in a porous cavity opened at its top end, insulated at the bottom wall, and filled with a fluid-saturated porous medium has been numerically investigated. The porous medium, at local thermal equilibrium assumption, is considered as a fictitious homogeneous, isotropic,...

The present work deals with a numerical study of coupled fluid flow and heat transfer by transient natural convection and thermal radiation in a vertical channel opened at both ends and filled with a fluid‐saturated porous medium. The bounding walls of the channel are isothermal and gray. In the present study we suppose the validity of the Darcy fl...