AMINA Amroune

LATTOUI Kheir eddine , REFICE Abdelghafar

étude numérique de la convection naturelle avec nanofluide entre un transformateur à l'interieur et un réservoir fermé à l'exterieur

The numerical investigation of heat transfer through natural convection in a vertically oriented annular cylinder using a nanofluid composed of Cu-water. The elliptical surfaces within the enclosure, characterized by the hot interior and cold exterior, were consistently upheld at unvarying temperatures denoted as Th and Tc, respectively. The resolution of the governing equations was accomplished through the utilization of the stream function-vorticity approach. To discretize the governing equations, the finite volume approach was employed. The specified ranges for the volume fraction of nanoparticles and the Rayleigh number were the following: 0<ϕ<0.08and〖10〗^3

Citation

AMINA Amroune , Abdelkrim BOURAS , Djedid TALOUB , ,(2023-12-02), Thermal Transfer with natural convection in a tilted annular cylinder filled with nanofluid,The 1st National Conference on physics and it's Applications (NCPA2023),ENS Bousaada

A numerical study of the natural convection of stationary laminar heat transfers in a horizontal ring between a heated square inner cylinder and a cold elliptical outer cylinder. This annular space is traversed by a Cu - water nanofluid. For different Rayleigh number and different volume fraction of nanoparticles. The system of equations governing the problem was solved numerically by the Fluent calculation code based on the finite volume method. Based on the Boussinesq approximation. The interior and exterior surfaces are kept at constant temperature. The study is carried out for Rayleigh numbers ranging from to . We have studied the effects of different Rayleigh numbers and volume fraction of nanoparticles on natural convection. The results are presented as isotherms, isocurrents, and local and mean Nusselt numbers. The aim of this study is to see the influence of the thermal Rayleigh number, and volume fraction of nanoparticles on the heat transfer rate.

Citation

AMINA Amroune , Abdelkrim BOURAS , Djedid TALOUB , ,(2023-11-29), Numerical study of natural convection in a horizontal ring between a cold elliptical outer cylinder and a heated square inner cylinder filled with nanofluid,1 st international Conference on Innovation Research in Materials and Nanothechnology (ICIRMN 2023),University of Ghardaia

In this paper, thermal transfer with natural convection in a tilted annular cylinder with a Cu-water nanofluid has been numerically studied. The hot interior and cold exterior elliptical surfaces of the enclosure were maintained at constant temperatures Th and Tc , respectively. The governing equations were solved by the stream functionvorticity approach. The finite volume approach was utilized to discretise the controlling equations. The volume fraction range of the nanoparticles and the Rayleigh number was as follows: 0 0 08 <φ< . and 4 6 10 Ra 10 < < , respectively. The inclination angles were 30 45 60 , and °° ° γ = . Results were given as isotherm contours, streamlines, average and local Nusselt numbers. The results indicate that the thermal transfer ratio increases with an increase in the tilt angle, regardless of the nanoparticle size values. and the impact of the inclination angle on the heating transfer rate is more important the higher the Rayleigh number and the more convection there is.

Citation

AMINA Amroune , Abdelkrim BOURAS , Djedid TALOUB , zied Deiss, , (2023-09-29), NUMERICAL STUDY OF HEATING TRANSFER BY NATURAL CONVECTION IN AN INCLINED ELLIPTICAL CYLINDER CHARGED WITH NANOFLUID, Int. J. of Applied Mechanics and Engineering, Vol:28, Issue:3, pages:28-41, UZ

The development of modern technology in microelectronics and power engineering requires the creation of efficient cooling systems. This is made possible by the use of special fin technology inside the cavity or special heat transfer Ethylene glycol-copper nanofluids to intensify the heat removal from the heat-generating elements. A numerical study of the natural convection of stationary laminar heat transfers in a closed rectangular cavity with a local source of internal volumetric heat generation. For different Rayleigh numbers and different volume fractions of nanoparticles. The system of equations governing the problem was solved numerically by the fluent computer code based on the method of finite volumes. Based on the Boussinesq approximation. Interior and exterior surfaces are maintained at a constant temperature. The study is carried out for Rayleigh numbers ranging from 104 to 106. The effects of different Rayleigh numbers and volume fractions of nanoparticles on natural convection have been studied. The results are presented as isotherms, isocurrents, and local and mean Nusselt numbers. The aim of this study is to see the influence of the thermal Rayleigh number and the volume fraction of the nanoparticles on the rate of heat transfer.

Citation

Abdelkrim BOURAS , Djedid TALOUB , AMINA Amroune , Zied Driss, , (2022-08-31), The Impact of Nanofluid on Natural Convection in an Isosceles Rectangular Container with a Heat Source, Advanced Engineering Forum, Vol:47, Issue:, pages:19-28, Trans Tech Publications Ltd

The purpose of this paper is to numerically study the double-diffusive natural convection in a space annulus, situated between two horizontal confocal elliptic cylinders filled with a Newtonian fluid, is presented. The elliptical coordinates are used to transform the physical domain into a rectangular one. The basic equations are discretized using the finite-volume method. Using a developed code, The study covers a wide range for (103 ≤ Ra ≤105 ), Le=2 , N=1 , e = 0.52, 0.62, 0.72, 0.82. Effects of the internal parameter eccentricity e1 on heat and mass transfer are studied in detail. Results are presented in the form of stream lines, isotherm plots, and local and average Nusselt numbers.A comparison was made with the published results and a good agreement was found.

Citation

AMINA Amroune , Abdelkrim BOURAS , Djedid TALOUB , ,(2021-11-15), Numerical investigation of double diffusive natural convection in elliptical cylinders: part -II- Influence of internal eccentricity,International conference on Mechanical Sciences ICMS'21,University of Oum El Bouaghi