Salah Zouaoui - Academia.edu (original) (raw)

Papers by Salah Zouaoui

Research paper thumbnail of Investigation of the Thermophysical Properties of Nanofluids Based on Metal Oxides: Application in Concentrated Solar Power Plants

Journal of Technology Innovations and Energy, Dec 13, 2023

Research paper thumbnail of Direct numerical simulation of fluid/solid particles flow inside a channel

Particulate Science and Technology, Oct 19, 2023

Research paper thumbnail of Location Optimization of a Hydraulic Turbine for Koudiet Acerdoune Water Treatment Plants

DOAJ (DOAJ: Directory of Open Access Journals), Aug 1, 2022

Research paper thumbnail of Fluid/particles flow simulation by finite volume method-hibrid-approach

Research paper thumbnail of Modelling and Simulation of Fluid Flow/Solid Particles with a New Contact Model

Social Science Research Network, 2018

In this work we have modelled and simulated the transport of solid particles in a flowing fluid. ... more In this work we have modelled and simulated the transport of solid particles in a flowing fluid. The approach consists of using the finite volume method for the fluid and a contact handling house code for solid particles. A model for perfectly inelastic collisions is proposed. To take into account the solid part, we have integrated, in the contact management code, the equations of the dynamics of the solid by considering all the forces acting on the particle flowing in a fluid. However, for the numerical resolution of the Navier-Stokes equations, we used the Fluent commercial code which is based on the Finite Volume Method. The path taken is to separate the numerical resolution of the equations governing the fluid flow from those of the solid by the Splitting procedure. Through the results obtained, for the case of solid particle injection, we can say that the approach adopted for this type of flow gives an overall idea of the behaviour of solid particles in a fluid flow.

Research paper thumbnail of Towards the numerical simulation of fluid/solid particles flow inside a pipe

The modeling of moving solid particles in fluid flow has been the focus of many studies and has s... more The modeling of moving solid particles in fluid flow has been the focus of many studies and has succeeded to attract sufficient attention by researchers. However, commonly used modeling approaches such as discrete element modeling (DEM) and direct numerical simulations (DNS) lack simplicity and have been computationally intensive [1]. The aim of this paper is to develop a new approach to simulate solid transport in an incompressible Newtonian fluid flow. This method is based on the Finite element method with penalization of the deformation tensor [2]. The fluid behavior is governed by the Navier-Stokes equations within the investigation domain. To take into account collisions, we present an algorithm which allows us to handle contacts between rigid particles [3, 4]. In this paper, 2D simulation fluid/particles flow is performed; some preliminary results are presented.

Research paper thumbnail of Numerical study to multiphase flow and viscous fingering in a heterogeneous porous medium

Research paper thumbnail of Motion of a Solid Particle in a Water Flow Inside a Pipe

Green energy and technology, 2018

This paper deals with modeling, simulation, and experimental solid/fluid flow in a pipe. Our appr... more This paper deals with modeling, simulation, and experimental solid/fluid flow in a pipe. Our approach focuses on particle interaction and motion behavior along the experimental section of a pipe. The motion of large calibrated beads of alumina in a turbulent water flow in a horizontal pipe is experimentally investigated. We also present an experimental study of the hydraulic transport of big solid particles in a horizontal pipe. Particle motion in the liquid is captured with a CCD camera. For image processing, a computing code is developed in order to visualize the particle trajectories. The modeling and simulation of the movement of a solid particle in a liquid flow are done. Modeled trajectories compared with experimental results show good agreement.

Research paper thumbnail of Modelling and Simulation of Solid Particle Sedimentation in an Incompressible Newtonian Fluid

Mathematics in Computer Science, Apr 25, 2017

We present in this paper a method that simulates the motion of rigid particles in a Newtonian flu... more We present in this paper a method that simulates the motion of rigid particles in a Newtonian fluid. This method is based on a variational formulation throughout the fluid/solid domain, with constraints on the unknown and on the test functions. The rigid motion of the particle is enforced by penalizing the strain tensor on the rigid domain for canceling the deformation rate in the volume occupied by the particle. The time discretization is performed by using the characteristics method. We developed a code from FreeFem++ that simulates Stokes flows or Navier-Stokes flows (low Reynolds number). A simulation of an elliptical rigid particle sedimentation in a Newtonian fluid has shown the importance of this approach.

Research paper thumbnail of Receiver parameter optimization for nanofluid-based parabolic trough concentrating plant: a case study

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects

Research paper thumbnail of Numerical Investigation of the (Mono-Hybrid) Nanofluid Thermophysical Properties for Concentrated Solar Power Plant

Journal of Nanofluids

Nanofluids became an essential solution for the improvement of efficient heat transfer fluids. Th... more Nanofluids became an essential solution for the improvement of efficient heat transfer fluids. Thus, it’s necessary to optimize their propreties. This paper investigates the effect of the temperature and the volume fraction on the thermo-physical properties of different nanofluids (Mono and hybrid) such as: Density, thermal conductivity, dynamic viscosity, kinematic viscosity, heat capacity and enthalpy in various nanoparticule concentrations and operating temperature. Two nanoparticles Al2O3, CuO were added to three different conventional base fluids namely: Therminol VP-1; Sylthrem 800; Dowtherm A, with several volume fractions, and various temperatures (200–400 °C). A numerical model was developed using MATLAB software, to evaluate the behavior of each thermo-physical property of the nanofluid that can be used as a working fluid in CSP applications and compared with their conventional fluids. The results show an improvement in thermo-physical properties compared to pure fluids fo...

Research paper thumbnail of Analytical Approach Modelling of the Motion of a Solid Particle in a Fluid Flow inside a Pipe

The general context of this present work deals with the modeling of solid /liquid multiphase flow... more The general context of this present work deals with the modeling of solid /liquid multiphase flows. The different experiments are about the comprehension and the statistic modeling of the mechanisms that carry solid particles into a flow. We proposed an analytical approach for in order to determine the movement of a solid particle in a liquid flow. The obtained results are compared to those existing in the literature.

Research paper thumbnail of Numerical study to multiphase flow and viscous fingering in a heterogeneous porous medium

Applications of Computer Algebra: proceedings, 2018, ISBN 9788416954872, págs. 39-42, 2018

Research paper thumbnail of Viscous Fingering in Five-Spot Immiscible Displacement

Research paper thumbnail of Modélisation et simulation des ecoulements multiphasiques basées sur une approche multi-echelles : Application au transport solide

Research paper thumbnail of Etude expérimentale et numérique du transport de particules solides dans une conduite horizontale

Research paper thumbnail of Towards the numerical simulation of fluid/solid particles flow inside a pipe

The modeling of moving solid particles in fluid flow has been the focus of many studies and has s... more The modeling of moving solid particles in fluid flow has been the focus of many studies and has succeeded to attract sufficient attention by researchers. However, commonly used modeling approaches such as discrete element modeling (DEM) and direct numerical simulations (DNS) lack simplicity and have been computationally intensive [1]. The aim of this paper is to develop a new approach to simulate solid transport in an incompressible Newtonian fluid flow. This method is based on the Finite element method with penalization of the deformation tensor [2]. The fluid behavior is governed by the Navier-Stokes equations within the investigation domain. To take into account collisions, we present an algorithm which allows us to handle contacts between rigid particles [3, 4]. In this paper, 2D simulation fluid/particles flow is performed; some preliminary results are presented.

Research paper thumbnail of Towards Numerical Simulation Tool of Motion Solid Particles in Fluid Flow

The International Journal of Multiphysics

We present here a numerical method to compute the motion of rigid particles in fluid flow with a ... more We present here a numerical method to compute the motion of rigid particles in fluid flow with a non-elastic impact law. Many methods have been proposed recently and different strategies have been used to compute such flows. Our motivation is the handling of the non-overlapping constraint in fluid-particle direct simulations. Each particle is treated individually and the Navier-Stokes equations are solved for the moving fluid by Fluent code which is based on the Finite Volume Method. The contacthandling algorithm, which is implemented in a research C ++, is based on the projection of the velocity field of the rigid particles over the velocity field of the fluid flow. The method consists of imposing a constraint on the velocity field of the particles, as a guarantee that at each time step the calculated particle velocity field belongs to an eligible velocity field of the fluid. In this case study, an Uzawa algorithm has been applied.

Research paper thumbnail of Fluid/particles flow simulation by finite volume method-hibrid-approach

Research paper thumbnail of Motion of a Solid Particle in a Water Flow Inside a Pipe

This paper deals with modeling, simulation, and experimental solid/fluid flow in a pipe. Our appr... more This paper deals with modeling, simulation, and experimental solid/fluid flow in a pipe. Our approach focuses on particle interaction and motion behavior along the experimental section of a pipe. The motion of large calibrated beads of alumina in a turbulent water flow in a horizontal pipe is experimentally investigated. We also present an experimental study of the hydraulic transport of big solid particles in a horizontal pipe. Particle motion in the liquid is captured with a CCD camera. For image processing, a computing code is developed in order to visualize the particle trajectories. The modeling and simulation of the movement of a solid particle in a liquid flow are done. Modeled trajectories compared with experimental results show good agreement.

Research paper thumbnail of Investigation of the Thermophysical Properties of Nanofluids Based on Metal Oxides: Application in Concentrated Solar Power Plants

Journal of Technology Innovations and Energy, Dec 13, 2023

Research paper thumbnail of Direct numerical simulation of fluid/solid particles flow inside a channel

Particulate Science and Technology, Oct 19, 2023

Research paper thumbnail of Location Optimization of a Hydraulic Turbine for Koudiet Acerdoune Water Treatment Plants

DOAJ (DOAJ: Directory of Open Access Journals), Aug 1, 2022

Research paper thumbnail of Fluid/particles flow simulation by finite volume method-hibrid-approach

Research paper thumbnail of Modelling and Simulation of Fluid Flow/Solid Particles with a New Contact Model

Social Science Research Network, 2018

In this work we have modelled and simulated the transport of solid particles in a flowing fluid. ... more In this work we have modelled and simulated the transport of solid particles in a flowing fluid. The approach consists of using the finite volume method for the fluid and a contact handling house code for solid particles. A model for perfectly inelastic collisions is proposed. To take into account the solid part, we have integrated, in the contact management code, the equations of the dynamics of the solid by considering all the forces acting on the particle flowing in a fluid. However, for the numerical resolution of the Navier-Stokes equations, we used the Fluent commercial code which is based on the Finite Volume Method. The path taken is to separate the numerical resolution of the equations governing the fluid flow from those of the solid by the Splitting procedure. Through the results obtained, for the case of solid particle injection, we can say that the approach adopted for this type of flow gives an overall idea of the behaviour of solid particles in a fluid flow.

Research paper thumbnail of Towards the numerical simulation of fluid/solid particles flow inside a pipe

The modeling of moving solid particles in fluid flow has been the focus of many studies and has s... more The modeling of moving solid particles in fluid flow has been the focus of many studies and has succeeded to attract sufficient attention by researchers. However, commonly used modeling approaches such as discrete element modeling (DEM) and direct numerical simulations (DNS) lack simplicity and have been computationally intensive [1]. The aim of this paper is to develop a new approach to simulate solid transport in an incompressible Newtonian fluid flow. This method is based on the Finite element method with penalization of the deformation tensor [2]. The fluid behavior is governed by the Navier-Stokes equations within the investigation domain. To take into account collisions, we present an algorithm which allows us to handle contacts between rigid particles [3, 4]. In this paper, 2D simulation fluid/particles flow is performed; some preliminary results are presented.

Research paper thumbnail of Numerical study to multiphase flow and viscous fingering in a heterogeneous porous medium

Research paper thumbnail of Motion of a Solid Particle in a Water Flow Inside a Pipe

Green energy and technology, 2018

This paper deals with modeling, simulation, and experimental solid/fluid flow in a pipe. Our appr... more This paper deals with modeling, simulation, and experimental solid/fluid flow in a pipe. Our approach focuses on particle interaction and motion behavior along the experimental section of a pipe. The motion of large calibrated beads of alumina in a turbulent water flow in a horizontal pipe is experimentally investigated. We also present an experimental study of the hydraulic transport of big solid particles in a horizontal pipe. Particle motion in the liquid is captured with a CCD camera. For image processing, a computing code is developed in order to visualize the particle trajectories. The modeling and simulation of the movement of a solid particle in a liquid flow are done. Modeled trajectories compared with experimental results show good agreement.

Research paper thumbnail of Modelling and Simulation of Solid Particle Sedimentation in an Incompressible Newtonian Fluid

Mathematics in Computer Science, Apr 25, 2017

We present in this paper a method that simulates the motion of rigid particles in a Newtonian flu... more We present in this paper a method that simulates the motion of rigid particles in a Newtonian fluid. This method is based on a variational formulation throughout the fluid/solid domain, with constraints on the unknown and on the test functions. The rigid motion of the particle is enforced by penalizing the strain tensor on the rigid domain for canceling the deformation rate in the volume occupied by the particle. The time discretization is performed by using the characteristics method. We developed a code from FreeFem++ that simulates Stokes flows or Navier-Stokes flows (low Reynolds number). A simulation of an elliptical rigid particle sedimentation in a Newtonian fluid has shown the importance of this approach.

Research paper thumbnail of Receiver parameter optimization for nanofluid-based parabolic trough concentrating plant: a case study

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects

Research paper thumbnail of Numerical Investigation of the (Mono-Hybrid) Nanofluid Thermophysical Properties for Concentrated Solar Power Plant

Journal of Nanofluids

Nanofluids became an essential solution for the improvement of efficient heat transfer fluids. Th... more Nanofluids became an essential solution for the improvement of efficient heat transfer fluids. Thus, it’s necessary to optimize their propreties. This paper investigates the effect of the temperature and the volume fraction on the thermo-physical properties of different nanofluids (Mono and hybrid) such as: Density, thermal conductivity, dynamic viscosity, kinematic viscosity, heat capacity and enthalpy in various nanoparticule concentrations and operating temperature. Two nanoparticles Al2O3, CuO were added to three different conventional base fluids namely: Therminol VP-1; Sylthrem 800; Dowtherm A, with several volume fractions, and various temperatures (200–400 °C). A numerical model was developed using MATLAB software, to evaluate the behavior of each thermo-physical property of the nanofluid that can be used as a working fluid in CSP applications and compared with their conventional fluids. The results show an improvement in thermo-physical properties compared to pure fluids fo...

Research paper thumbnail of Analytical Approach Modelling of the Motion of a Solid Particle in a Fluid Flow inside a Pipe

The general context of this present work deals with the modeling of solid /liquid multiphase flow... more The general context of this present work deals with the modeling of solid /liquid multiphase flows. The different experiments are about the comprehension and the statistic modeling of the mechanisms that carry solid particles into a flow. We proposed an analytical approach for in order to determine the movement of a solid particle in a liquid flow. The obtained results are compared to those existing in the literature.

Research paper thumbnail of Numerical study to multiphase flow and viscous fingering in a heterogeneous porous medium

Applications of Computer Algebra: proceedings, 2018, ISBN 9788416954872, págs. 39-42, 2018

Research paper thumbnail of Viscous Fingering in Five-Spot Immiscible Displacement

Research paper thumbnail of Modélisation et simulation des ecoulements multiphasiques basées sur une approche multi-echelles : Application au transport solide

Research paper thumbnail of Etude expérimentale et numérique du transport de particules solides dans une conduite horizontale

Research paper thumbnail of Towards the numerical simulation of fluid/solid particles flow inside a pipe

The modeling of moving solid particles in fluid flow has been the focus of many studies and has s... more The modeling of moving solid particles in fluid flow has been the focus of many studies and has succeeded to attract sufficient attention by researchers. However, commonly used modeling approaches such as discrete element modeling (DEM) and direct numerical simulations (DNS) lack simplicity and have been computationally intensive [1]. The aim of this paper is to develop a new approach to simulate solid transport in an incompressible Newtonian fluid flow. This method is based on the Finite element method with penalization of the deformation tensor [2]. The fluid behavior is governed by the Navier-Stokes equations within the investigation domain. To take into account collisions, we present an algorithm which allows us to handle contacts between rigid particles [3, 4]. In this paper, 2D simulation fluid/particles flow is performed; some preliminary results are presented.

Research paper thumbnail of Towards Numerical Simulation Tool of Motion Solid Particles in Fluid Flow

The International Journal of Multiphysics

We present here a numerical method to compute the motion of rigid particles in fluid flow with a ... more We present here a numerical method to compute the motion of rigid particles in fluid flow with a non-elastic impact law. Many methods have been proposed recently and different strategies have been used to compute such flows. Our motivation is the handling of the non-overlapping constraint in fluid-particle direct simulations. Each particle is treated individually and the Navier-Stokes equations are solved for the moving fluid by Fluent code which is based on the Finite Volume Method. The contacthandling algorithm, which is implemented in a research C ++, is based on the projection of the velocity field of the rigid particles over the velocity field of the fluid flow. The method consists of imposing a constraint on the velocity field of the particles, as a guarantee that at each time step the calculated particle velocity field belongs to an eligible velocity field of the fluid. In this case study, an Uzawa algorithm has been applied.

Research paper thumbnail of Fluid/particles flow simulation by finite volume method-hibrid-approach

Research paper thumbnail of Motion of a Solid Particle in a Water Flow Inside a Pipe

This paper deals with modeling, simulation, and experimental solid/fluid flow in a pipe. Our appr... more This paper deals with modeling, simulation, and experimental solid/fluid flow in a pipe. Our approach focuses on particle interaction and motion behavior along the experimental section of a pipe. The motion of large calibrated beads of alumina in a turbulent water flow in a horizontal pipe is experimentally investigated. We also present an experimental study of the hydraulic transport of big solid particles in a horizontal pipe. Particle motion in the liquid is captured with a CCD camera. For image processing, a computing code is developed in order to visualize the particle trajectories. The modeling and simulation of the movement of a solid particle in a liquid flow are done. Modeled trajectories compared with experimental results show good agreement.