BiBliographie des Ensignants Chercheurs de l'Université Nationale des Sciences, Technologies, Ingénierie et Mathématiques
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Les publications dans l'entité : ENSGEP
EXPERIMENTAL STUDY OF THE ENERGY PERFORMANCE OF NANSU STOVE WITH A MODIFIED GRID BY THE CONTROLLED COOKING TEST
The present work concerns the modification of the grid of the Nansu stove, used in many households in Africa and in particular in Benin. The performance of the stove obtained (modified Nansu) was estimated and compared on the one hand with that of the cor
Technological and Energy Optimization of the Height of Fins Placed on Flat Absorber for Solar Collector
This study proposes the use of solar energy by thermal way, to heat water using a flat solar collector whose absorber is equipped with straight fins. The study concerns the optimization of the height of the fins and is based on the criterion of the abso
Effect of Height Difference between Solar Thermal Collector & Storage Tank on the Entransy Destroyed
The difference in level between the top of the solar collector and the bottom of the storage tank is one of the parameters that can be used to improve the performance of a solar collector that operates by thermosiphon. The present research studies the
Optimization of the Fins Dimensions for the Absorber with Fins on a Compact Thermal Solar Collector by Entropy Generation Criterion
This study present the possibility of adding fins to plate absorbers to improve the performance of the flat plate collector. The objective of this theoretical work is to optimize the dimensions of the fins of the absorbers for a compact solar collector.
Use the thermal efficiency criterion to optimize the fins dimensions for the absorber with fins on a compact solar collector.
The present work concerns the optimization of the fins dimensions for the absorber with fins on a compact solar collector. For this optimization, the criterion of thermal efficiency was used, accompanied by the condition of production of the black body on
THEORETICAL STUDY OF THE PERFORMANCES OF AN ABSORPTION REFRIGERATING MACHINE IN SUB-SAHELIAN CLIMATIC CONDITIONS
Dans le présent article, le fonctionnement d’une machine à absorption utilisant le mélange binaire eau – bromure de lithium (LiBr-H2O) a été modélisé. L’effet des températures de fonctionnement de chaque élément de la machine sur le coeffi
Hydrodynamic Anisotropy Effects on Radiation-Mixed Convection Interaction in a Vertical Porous Channel
The effects of hydrodynamic anisotropy on the mixed-convection in a vertical porous channel heated on its plates with a thermal radiation are investigated analytically for fully developed flow regime. The porous medium is anisotropic in permeability whose
Magnetic properties of a spin‑7/2 and spin‑5/2 core/shell nanowire: a Monte Carlo study
We have used Monte Carlo simulations based on the Metropolis algorithm to study the magnetic properties of an Ising nanowire with spin-7/2 core and spin-5/2 shell atoms in the presence of lattice anisotropy and external magnetic field. Only antiferromag
SYMMETRIC SOLITONS OF SPINOR FIELDIN GRAVITATIONAL THEORY
This paper deals with soliton-like solutions as model in order to describe the configurations of elementary particles through the interaction of their fields in general relativity. To this end, we have obtainedexact sphericalsymmetric soliton-like solu
Exact Soliton-Like Spherical Symmetric Solutions of the Heisenberg-Ivanenko Type Nonlinear Spinor Field Equation in Gravitational Theory
In the present research work, we have obtained the exact spherical symmetric solutions of Heisenberg-Ivanenko nonlinear spinor field equations in the Gravitational Theory. The nonlinearity in the spinor Lagrangian is given by an arbitrary function whic
Exact static spherical symmetric soliton-like solutions to the scalar and electromagnetic nonlinear induction field equations in general relativity
In this paper, we have obtained exact static spherical symmetric soliton-like solutions to the electromagnetic and scalar nonlinear induction field equations taking into account the own gravitational field of the elementary. The results show that the met
URBAN DYNAMICS AND ANARCHIC OCCUPATION OF PUBLIC SPACE IN THE CITIES OF PORTO-NOVO AND ABOMEY-CALAVI IN SOUTHERN BENIN
La présente recherche vise à appréhender l’état des lieux, les contraintes et les implications socioéconomiques de l’opération de libération des espaces publics dans les villes de Porto-Novo et Abomey-Calavi. L’approche méthodologique ado
Comparative study of the energy performance of two thermosiphon solar collectors with different water channels: channel in round tubes and channel under flat plate
This theoretical study focuses on the comparison of the performance of two solar collectors with the same characteristics except for the different water circulation channels. One of the channels is copper tube of 10 mm diameter and the other is rectan
Thermal conductivity of composites made of wastes of wood and expanded polystyrene
In the present work, a possibility of recycling sediments of woods and polystyrene packing remove from service in view to produce composite materials of wood has been examined. The composite materials consist in that chips or sawdusts of wood sorted in pa
INFLUENCE OF THE SIMULTANEOUS TRANSFER OF HEAT AND MASS ON THE MEASURE OF MATERIALS THERMAL CONDUCTIVITY
The present work gives the current situation of the methods developed to measure the thermal conductivity of building materials used in Benin, country of Westen Africa. Modus operandi, basic theories and experimental results of the case of cement mortar w
THERMAL DIFFUSIVITY STUDY ONCLAY FROM BENIN BY “FLASH METHOD”
Knowledge of thermo physical parameters of local materials of construction has been essential when one considered the fast development of the market of building and especially the need for saving energy while ensuring the thermal comfort in housing. This
Thermal Insulation Panel Based on Vegetable Typha Domingensis and Starch: Formulation and Physico-chemical Characterization
The chemical characteristics of the typha-starch composite have been investigated in this study to optimize the component of the habitat insulation panel obtained from the two bio sourced materials. Four mixtures have been formulated and tested (starch 0
Technical and sustainability assessment of power production system based on cotton stall( and rice husk gasification in an isolated area in Burkina Faso
Biomass gasification systems may be relevant for decentralized power generation from these residues in the isolated areas. This work deals with the analysis of both the technical and economic feasibility, and then the environmental and social impacts
Thermal Characterization of an Eco Concrete Based on Lateritic Gravel, Millet Pods and Cement
o simultaneously meet the need of thermal confort and living environment protection, vegetable biomass valorisation in building sector is of particular importance. In this context, the main objective of this study is to produce a lightweight composite con
Transient film condensation on a vertical surface in a thin porous medium with large anisotropic permeability
The present study deals w ith the problem o f transient film condensation o n a vertical surface embedded in a thin porous medium with anisotropic permeability filled with pure saturated vapour. The principal axes o f anisotropic perm eability are orient
Effect of Anisotropic Permeability on Thermosolutal Convection in a Porous Cavity Saturated by a Non-newto-nian Fluid
Abstract: In this paper, an analytical study is reported on double-diffusive natural convection in a shallow porous cavity saturated with a non-Newtonian fluid by using the Darcy model with the Boussinesq approximations. A Cartesian coordinate system is
Liquid film condensation along a vertical surface in a thin porous medium with large anisotropic permeability
The problems of steady film condensation on a vertical surface embedded in a thin porous medium with anisotropic permeability filled with pure saturated vapour are studied analytically by using the Brinkman-Darcy flow model. The principal axes of anisotro
Laminar film condensation along a vertical plate embedded in an anisotropic porous medium with oblique principal axes
This work analytically investigates the problem of steady film condensation along a vertical surface embedded in an anisotropic porous medium filled with a dry saturated vapor. The porous medium is anisotropic in permeability whose principal axes are orie
Condensation en film liquide sur une surface verticale bordant un milieu poreux épais anisotrope en perméabilité
La condensation en film laminaire sur une surface verticale, bordant un milieu poreux épais anisotrope saturé par une vapeur pure, est étudiée analytiquement en utilisant le modèle de Darcy-Brinkman. Cette étude vise l’obtention d’informations n
Hydrodynamic Anisotropy Effects on Thermal Radiation-Natural Convection Interaction in a Vertical Rectangular Porous Cavity
This work analytically investigates the problem of natural convection which develops in a vertical rectangular porous saturated cavity subjected to solar radiation. The porous medium is anisotropic in permeability whose principal axes are oriented in a
Effects of Anisotropy on Natural Convection in a Vertical Porous Cavity Filled with a Heat Generation
This research was devoted to the analytical study of heat transfer by natural convection in a vertical cavity, confining a porous medium, and containing a heat source. The porous medium is hydrodynamically anisotropic in permeability whose axes of permeab
Effects of the Hydro Anisotropy and the Magnetic Field on the Dynamic Thermo-Bi-Diffusive Flow in a Horizontal Cavity Confining a Porous Medium Saturated by a Binary Fluid
We analyze analytically the effects of anisotropy in permeability and that of a transverse magnetic field on thermal convection in a porous medium saturated with a binary fluid and confined in a horizontal cavity. The porous medium, of great extension
TRANSIENT FILM CONDENSATION ON A VERTICAL SURFACE IN A THIN POROUS MEDIUM WITH LARGE ANISOTROPIC PERMEABILITY
The present study deals with the problem of transient film condensation on a vertical surface embedded in a thin porous medium with anisotropic permeability filled with pure saturated vapour. The principal axes of anisotropic permeability are oriented in
Effects of Anisotropy on Natural Convection in a Vertical Porous Cavity Filled with a Heat Generation
This research was devoted to the analytical study of heat transfer by natural convection in a vertical cavity, confining a porous medium, and containing a heat source. The porous medium is hydrodynamically anisotropic in permeability whose axes of perme
Hydrodynamic Anisotropy Effects on Thermal Radiation-Natural Convection Interaction in a Vertical Rectangular Porous Cavity
This work analytically investigates the problem of natural convection which develops in a vertical rectangular porous saturated cavity subjected to solar radiation. The porous medium is anisotropic in permeability whose principal axes are oriented in a
Maximum Density Effects on Natural Convection Over an Isothermal Vertical Plate Embedded in an Anisotropic Porous Medium
The natural convection in the porous medium has attracted considerable attention with its applications in various industrial sectors, such as the agro-alimentary, the pharmaceutical and oil processing industries. The present work is about the study of
Transient buoyancy-induced flows of non-Newtonian fluids about a horizontal surface in an anisotropic porous medium
The method of characteristics is used to exactly the problem of unsteady convection boundary layer flow along a horizontal surface embedded in an anisotropic porous medium saturated by a non-Newtonian fluid. The porous medium is anisotropic in permeabilit
Transient buoyancy-induced flows of non-Newtonian fluids about a horizontal surface in an anisotropic porous medium
The method of characteristics is used to exactly the problem of unsteady convection boundary layer flow along a horizontal surface embedded in an anisotropic porous medium saturated by a non-Newtonian fluid. The porous medium is anisotropic in permeabilit
EFFECT OF PERMEABILITY ANISOTROPY ON FORCED CONVECTION THERMAL - HYDRODYNAMICS OF ENTRANCE AND DEVELOPED FLOW REGIMES IN POROUS SATURATED CIRCULAR TUBE
Forced convective flow through anisotropic porous saturated circular tube was analysed to determine the entrance length to the hydrodynamic flow. The porous medium saturated with an incompressible viscous fluid was characterized by anisotropy permeabilit