Abidi Saad Aissa

• Professor
• Assistant Head of Department at University of Kasdi Merbah-Ouargla

Coiled tubing (CT) plays a pivotal role in oil and gas well intervention operations due to its advantages, such as flexibility, fast mobilization, safety, low cost, and its wide range of applications, including well intervention, cleaning, stimulation, fluid displacement, cementing, and drilling. However, CT is subject to fatigue and mechanical dam...

In this paper, the analysis of the 2nd law of thermodynamics characteristics of assisted mixed convection heat transfer coupled with fluid flow within a vertical convergent isothermal channel is numerically carried out. The numerical model is undertaken for 2D, laminar and steady flow using finite volume approach and air as working fluid. The analy...

Even though there is a small amount of asphaltene in Algerian light oil (less than 0.7 weight percent), there is significant evidence that the issue of their precipitation during the oil production operations stems from the oil's chemical makeup, which influences the behavior of the asphaltene rather than the amount of asphaltene in the oil. An exp...

O mapeamento 3D da resistência das rochas desempenha um papel crucial na otimização da perfuração, fornecendo informações detalhadas sobre as propriedades geomecânicas do subsolo, que são essenciais para a otimização da perfuração. Ao criar uma representação tridimensional das variações de resistência da rocha, os engenheiros podem identificar área...

In this study, two-dimensional unsteady laminar convective heat transfer from two isothermal cylinders arranged in tandem in horizontal duct has been numerically investigated. The numerical study is performed by solving the governing equations (continuity and momentum) and energy equations using a finite volume-based code ANSYS Fluent. The present...

Purpose This study aims at investigating two-dimensional laminar flow of power-law fluids around three unconfined side-by-side cylinders. Design/methodology/approach The numerical study is performed by solving the governing (continuity and momentum) equations using a finite volume-based code ANSYS Fluent. The numerical results have been presented...

In this article, Particle Image Velocimetry (PIV) experiments are carried out in an attempt to predict the morphology of fluid flow induced by natural convection in an Inclined PhotoVoltaic Double Skin Façade (IPVDSF) during transient and laminar regimes. These experiments were performed on an unevenly heated channel with an aspect ratio Ar = 5.2 a...

Hassi Messaoud oil field is one of the most important fields in Algeria and the world, because it covers an important quantity of total Crude Oil Production in Algeria. Furthermore, two-thirds of this oil field is underexplored or not explored. Therefore, the drilling process of petroleum wells in this field is a continuous process that results in...

In order to integrate PV panels in building double-skin façades, many parameters must be taken into account, such as the spacing between PV panels and their installation modes (alternations). The present work is situated within these latter perspectives. This paper presents a numerical study concerning a double skin laminar flow in a vertical DSF-c...

A 2-D numerical investigation was carried out to study the effect of spacing between ribs on nanofluid flow and heat transfer inside a horizontal micro-channel. Two identical ribs were placed at the lower wall of micro-channel with variable spacing between them. The alumina oxide nanoparticles was suspended in water as based fluid at different volu...

Le fluide caloporteur joue un rôle très important dans le système d'écoulement, car il conduit le processus thermique. Pour cet effet, on doit souvent calculer la quantité de chaleur transférée, afin d'assurer son efficacité lors de conception. Dans cet article on va essayer de prouver l'utilité du calcul des dissipations d'énergie pour affirmer le...

This paper treats experimental investigation about natural convection induced by the flow of fluid inside vertical channel corresponds to vertical double skin façades with integration of PV panels and inclined channel corresponds to roof-top ones. The system is modeled by a vertical and inclined channel asymmetrically heated with uniform heat fluxe...

A numerical study was conducted on the inclination angle effect of the adiabatic wall in a channel asymmetrically heated on the laminar natural convection behavior. The center of the other wall of the channel has been subjected to a uniform heat flux density. Different inclination angles have been studied (−10° ≤ α ≤ +10°) for a modified Rayleigh n...

The aim of this study is to investigate the heat transfer and flow dynamics in inclined PV panels. For this purpose, a numerical study of the early stage regime of natural convection flow in an inclined plane channel asymmetrically heated at a 510 W/m² uniform heat flux, corresponding to the average annual solar heat flux in France, has been perfor...

Study concerning a double skin flow with secondary ventilation was conducted numerically, in order to understand the basic mechanisms of the free convection in an open channel asymmetrically heated with uniform heat flux density (510 W/m2). The vertical channel corresponds to a double skin façade, which was immersed in a tank filled with water. The...

A 2-D numerical simulation is carried out to investigate the effect of two adiabatic square ribs on laminar flow and heat transfer in an asymmetrically heated channel. The two ribs are symmetrically located on each wall, exactly above the heating zone. The computational procedure is made by solving the unsteady bi-dimensional continuity, momentum a...

In the aim to optimize the flow systems, a numerical simulation is carried out to investigate the entropy generation of the aiding mixed convection within two non-parallel vertical plates. The computational procedure is made by solving the laminar, steady and bi-dimensional continuity, momentum, and energy equations with the finite volume method. T...

An experimental study in an open-ended vertical channel is carried out in order to describe the fluid dynamics and heat transfer of transient free convection inside a vertical rib-roughened channel asymmetrically heated at various uniform heat fluxes (650, 700, and 780 W/m2) corresponding to various modified Rayleigh numbers (3.65 × 106, 3.93 × 106...

Conjugate heat transfer; Triangular inserts; Complicated cavity; Optimisation

The focus of presented numerical study is to investigate the effect of solid inserts of triangular form on conjugate natural convection. The solid inserts are placed at the inner corners of a square cavity and are of various dimensions. The cavity studied here is filled with air (Pr = 0.71) and bounded by an upper horizontal conducting thick wal. T...