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Papers by ali bousri

Research paper thumbnail of Experimental investigation of heat transfer from a circular pipe to lead coolant with controlled oxygen content

Atomic Energy, 2004

The results of experimental investigations of heat transfer from a circular pipe to lead coolant ... more The results of experimental investigations of heat transfer from a circular pipe to lead coolant with the oxygen content being controlled and monitored are presented. The heat-transfer investigations are conducted for Peclet numbers 800–3550, Prandtl numbers 0.0123–0.0211, and Reynolds numbers 40,000–190,000 with specific heat flux ~40 kW/m 2 and thermodynamically active oxygen content in lead 10-7 –100. The experimental dependences

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Research paper thumbnail of Forced Convection Coolig of Multiple Heat Sources Using Open Cell Metal Foams

Journal of Thermal Engineering, 2020

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Research paper thumbnail of Numerical Investigation of Forced Convection Nonequilibrium Effects on Heat and Mass Transfer in Porous Media

A numerical investigation is performed to analyze the coupled heat and mass transfer in porous me... more A numerical investigation is performed to analyze the coupled heat and mass transfer in porous media with a strong exothermic reaction. Similar problems have received great attention due to their relevance in a wide variety of engineering applications, such as heat pipes, drying technologies, nuclear reactors, catalytic reactors, environmentally clean utilization of energy, and many others. The momentum transfer in the porous substrate is modeled with the Darcy–Brinkman–Forchheimer law, while the temperature and concentration fields are obtained subsequently from the energy and diffusion equations. The considered configuration consists of a cylindrical duct where a first-order reaction is supposed to occur. The governing equations are solved by using the finite-volume method. The SIMPLER algorithm is applied to solve the momentum and continuity equations. The power-law scheme is used to model the interaction between convection and diffusion terms. The effect of the main governing pa...

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Research paper thumbnail of Heat and Mass Transfer in Reactive Porous Media with Local Nonequilibrium Conditions

Journal of Porous Media, 2012

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Research paper thumbnail of Heat and Mass Transfer for a Constant Heat Boundary in Porous Reactive Medium under Local Non Equilibrium Conditions

Defect and Diffusion Forum, 2010

A two dimensional mathematical model has been developed to simulate the coupled heat and mass tra... more A two dimensional mathematical model has been developed to simulate the coupled heat and mass transfer in a porous medium undergoing a strong exothermic reaction. The problem has received a lot of interest due to its relevance in a wide variety of engineering applications such heat pipes, nuclear reactors, drying technologies, catalytic reactors and others. The fluid flow is modelled via the Darcy-Brinkman-Forchheimer equation. This model is solved numerically by the finite volume method, and the code is validated by comparing with previously published works. The influence of the exothermic chemical reaction on the heat and mass transfer in the porous medium is discussed. The effects of pertinent parameters such as the Biot number, the Reynolds number and the Frank-Kamenetskii number were analyzed. Quantitative and qualitative results are presented. Comparisons with other works in the literature are performed and excellent agreement between the results is obtained.

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Research paper thumbnail of Forced convection analysis of coupled heat and mass transfer in a channel filled with a reactive porous medium

Progress in Computational Fluid Dynamics An International Journal

Investigation of the fluids purification process, either by filtration or by undesirable substanc... more Investigation of the fluids purification process, either by filtration or by undesirable substances destruction, is conducted. A convective flow in a reactive porous medium with an axisymmetrical geometry is considered. The momentum equation for the forced convection through a porous substrate is modelled by using the Darcy-Brinkman-Forchheimer model, while the temperature and the concentration fields are obtained subsequently from the energy and diffusion equations. The effects of the main governing parameters such as solid-to-fluid conductivity ratio, Reynolds number, Biot number, as well as the modified Frank-Kamenetskii number (FK)<sub align="right"> m are studied. The comparison with previously published work shows an excellent agreement.

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Research paper thumbnail of Heat and Mass Transfer in Reactive Porous Media with Local Nonequilibrium Conditions

Journal of Porous Media

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Research paper thumbnail of Double Diffusive Convection of Power Law Fluids Through Taylor–Couette Flow

Journal of Thermophysics and Heat Transfer

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Research paper thumbnail of Numerical Investigation of Forced Convection Non-Equilibrium Effects on Heat and Mass Transfer in Porous Media

Heat Transfer Engineering, 2016

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Research paper thumbnail of Experimental investigation of heat transfer from a circular pipe to lead coolant with controlled oxygen content

Atomic Energy, 2004

The results of experimental investigations of heat transfer from a circular pipe to lead coolant ... more The results of experimental investigations of heat transfer from a circular pipe to lead coolant with the oxygen content being controlled and monitored are presented. The heat-transfer investigations are conducted for Peclet numbers 800–3550, Prandtl numbers 0.0123–0.0211, and Reynolds numbers 40,000–190,000 with specific heat flux ~40 kW/m 2 and thermodynamically active oxygen content in lead 10-7 –100. The experimental dependences

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Research paper thumbnail of Forced Convection Coolig of Multiple Heat Sources Using Open Cell Metal Foams

Journal of Thermal Engineering, 2020

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Research paper thumbnail of Numerical Investigation of Forced Convection Nonequilibrium Effects on Heat and Mass Transfer in Porous Media

A numerical investigation is performed to analyze the coupled heat and mass transfer in porous me... more A numerical investigation is performed to analyze the coupled heat and mass transfer in porous media with a strong exothermic reaction. Similar problems have received great attention due to their relevance in a wide variety of engineering applications, such as heat pipes, drying technologies, nuclear reactors, catalytic reactors, environmentally clean utilization of energy, and many others. The momentum transfer in the porous substrate is modeled with the Darcy–Brinkman–Forchheimer law, while the temperature and concentration fields are obtained subsequently from the energy and diffusion equations. The considered configuration consists of a cylindrical duct where a first-order reaction is supposed to occur. The governing equations are solved by using the finite-volume method. The SIMPLER algorithm is applied to solve the momentum and continuity equations. The power-law scheme is used to model the interaction between convection and diffusion terms. The effect of the main governing pa...

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Research paper thumbnail of Heat and Mass Transfer in Reactive Porous Media with Local Nonequilibrium Conditions

Journal of Porous Media, 2012

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Research paper thumbnail of Heat and Mass Transfer for a Constant Heat Boundary in Porous Reactive Medium under Local Non Equilibrium Conditions

Defect and Diffusion Forum, 2010

A two dimensional mathematical model has been developed to simulate the coupled heat and mass tra... more A two dimensional mathematical model has been developed to simulate the coupled heat and mass transfer in a porous medium undergoing a strong exothermic reaction. The problem has received a lot of interest due to its relevance in a wide variety of engineering applications such heat pipes, nuclear reactors, drying technologies, catalytic reactors and others. The fluid flow is modelled via the Darcy-Brinkman-Forchheimer equation. This model is solved numerically by the finite volume method, and the code is validated by comparing with previously published works. The influence of the exothermic chemical reaction on the heat and mass transfer in the porous medium is discussed. The effects of pertinent parameters such as the Biot number, the Reynolds number and the Frank-Kamenetskii number were analyzed. Quantitative and qualitative results are presented. Comparisons with other works in the literature are performed and excellent agreement between the results is obtained.

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Research paper thumbnail of Forced convection analysis of coupled heat and mass transfer in a channel filled with a reactive porous medium

Progress in Computational Fluid Dynamics An International Journal

Investigation of the fluids purification process, either by filtration or by undesirable substanc... more Investigation of the fluids purification process, either by filtration or by undesirable substances destruction, is conducted. A convective flow in a reactive porous medium with an axisymmetrical geometry is considered. The momentum equation for the forced convection through a porous substrate is modelled by using the Darcy-Brinkman-Forchheimer model, while the temperature and the concentration fields are obtained subsequently from the energy and diffusion equations. The effects of the main governing parameters such as solid-to-fluid conductivity ratio, Reynolds number, Biot number, as well as the modified Frank-Kamenetskii number (FK)<sub align="right"> m are studied. The comparison with previously published work shows an excellent agreement.

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Research paper thumbnail of Heat and Mass Transfer in Reactive Porous Media with Local Nonequilibrium Conditions

Journal of Porous Media

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Research paper thumbnail of Double Diffusive Convection of Power Law Fluids Through Taylor–Couette Flow

Journal of Thermophysics and Heat Transfer

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Research paper thumbnail of Numerical Investigation of Forced Convection Non-Equilibrium Effects on Heat and Mass Transfer in Porous Media

Heat Transfer Engineering, 2016

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