Khalid Baker Saleem
@uobasrah.edu.iq
Mechanical Engineering Department
College of Engineering
RESEARCH INTERESTS
Two-phase flows
CFD
Nanofluids
Heat Exchangers
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Sami Ullah Khan, Shanza Bibi, Aqsa Bibi, Adnan, Khalid B. Saleem, Badr M. Alshammari, Rejab Hajlaoui, and Lioua Kolsi
Elsevier BV
Khalid B. Saleem, Alia H. Marafie, Khaled Al-Farhany, Wisam K. Hussam, and Gregory J. Sheard
Elsevier BV
I. Kheioon, K. Saleem and Hussein S. Sultan
Khalid B. Saleem, Mohamed Omri, Walid Aich, Badr M. Alshammari, Hatem Rmili, and Lioua Kolsi
MDPI AG
This paper emphasizes the effect of applying a rotating magnetic field on the natural convective flow of CNT/Water nanofluid inside a corrugated square cavity differentially heated through its sidewalls, while the upper and lower boundaries are supposed to be perfectly insulated. The aim of this study is to highlight the impact of a large variety of parameters, namely Hartman number, frequency of rotation, Rayleigh number, nanoparticles volume fraction, and corrugation aspect ratio on the flow behaviour and thermal transport characteristics. The governing non-linear coupled differential equations are solved by using the finite element technique. Outcomes indicated that the thermal energy exchange is improved with the Rayleigh number increment and nanoparticles loading, while it is weakened with the rising of Ha, ascribed to the Lorentz force opposition to buoyancy. Moreover, enlarging the corrugation aspect ratio causes the apparition of stagnant fluid zones and the rate of heat transfer is reduced as a result.
Khalid B. Saleem, Wael Al-Kouz, and Ali Chamkha
Springer Science and Business Media LLC
The problem of steady-state laminar two-dimensional rarefied gaseous flow by natural convection heat transmission in a partly heated square two-sided wavy cavity with an internal heat generation is numerically studied employing the finite volume procedure. The Boussinesq approximation is adopted to account for buoyancy effects. A favorable comparison for validation purposes with previously published work is obtained. The study is performed with distinct values of the external Rayleigh number (10 4 ≤ Ra E ≤ 10 6 ), Knudsen number (0.01 ≤ Kn ≤ 0.1), inclination angle ( ϕ = 0°, 30°, 60°, and 90°), three non-dimensional heater lengths (L/H = 0.175, 0.35, and 0.52), while the Prandtl number (Pr) is fixed at 0.7. The outcomes of this research yield that the average Nusselt number (Nu avg ) relies inversely on Kn and directly on Ra E . Moreover, it is revealed that increasing L/H value decreases Nu avg values at the lower partially heated cavity wall. Additionally, the study reveals that as the heat generation term ( Q gen ) increases, the Nu avg increases as well. Finally, a correlation between Nu avg and the parameters inspected in this research is suggested.
Khaled Al-Farhany, Mohammed Azeez Alomari, Khalid B. Saleem, Wael Al-Kouz, and Nirmalendu Biswas
Springer Science and Business Media LLC
Hassanein I. Khalaf, Khalid B. Saleem, Khaled Al-Farhany, and Wael Al-Kouz
Springer Science and Business Media LLC
Khalid B. Saleem, Lounes Koufi, Ahmed K. Alshara, and Lioua Kolsi
Elsevier BV
Abstract Numerical results of laminar double-diffusive natural convection in a trapezoidal shape solar distiller occupied with an air-vapor mixture are carried out. In the present paper, the distiller is subjected to cooling fluid with a cold free stream temperature from the upper wall that kept at low concentration. The lower distiller wall kept with hot temperature and high concentration. The finite volume method based on SIMPLE algorithm is employed to solve the governing equations. Outcomes are performed with a scope of Rayleigh number (104 ≤ Ra ≤ 106), free stream Reynolds number (102 ≤ Re∞ ≤ 105), buoyancy ratio (N = 1, 2,5 and 10) and varying cooling fluid (air or water). The Prandtl (Pr), Schmidt (Sc) and Lewis (Le) numbers are fixed at 0.7, 0.62 and 0.89, respectively. The results revealed a considerable enhancement on the mass and heat transfer rates with increasing of Ra, N and Re∞. The effect of Re∞ is more pronounced with Ra = 106. On the other hand, more vortices formed in the cavity as Ra and N augments and the maximum vortices number obtained when N = 5. Regarding the local Nusselt (NuL) and Sherwood (ShL) numbers, improvements are found both on the upper and lower cavity walls as Ra and N rise. The impact of N on NuL and ShL turns out significant with the higher value (N = 10).
Wael Al-Kouz, Khalid B. Saleem, and Ali Chamkha
Elsevier BV
Abstract This paper intends to analyze computationally the rarefied gaseous flow and performance of heat transfer for a steady-state laminar 2D free convection within tilted enclosures where the sided walls are of wavy shape. Low-pressure or rarefied flows are flows with Knudsen number greater than zero. These kinds of flows are of incredible significance in different applications. Boussinesq estimation is adopted to represent the buoyancy effects. Grid independence tests are carried out to ensure accuracy. Moreover, the current code is verified with numerical and experimental results existing in the literature. Flow and thermal fields for simulated cases are presented. The outcome of this research indicates that there is a direct relationship between the average Nusselt number and the Rayleigh number, and a converse relationship between the average Nusselt number and Knudsen number. Additionally, the numerical simulations reveal that increasing the amplitude of the two-sided wavy walls of the enclosure slightly mends the transfer of heat. Besides, it is determined that the tilt angle slightly affects the heat transfer performance of such flows; and it is evident from the simulations that horizontal or nearly horizontal orientations of such cavities give the maximum transfer of heat. Finally, a correlation representing the relationship of the average Nusselt number in terms of all the examined parameters is introduced.
Khalid B. Saleem and Ahmed K. Alshara
Wiley
Khalid B. Saleem and Emad A. Khazal
Avestia Publishing
This paper presents a two-dimensional numerical analysis to study the laminar heat transfer and flow characteristics of CuO–water nanofluids through a tube at constant heat flux boundary condition at tube wall. Based on the single-phase approach, the effects of different parameters such as nanoparticle volume concentration (1% 5%), and Reynolds number (5002100) for various axial locations of tube with CuO–water nanofluids as working media were discussed in detail. The finite volume method and SIMPLE algorithm are utilized to solve the governing equations numerically. The numerical results shows that with increasing Reynolds number, local Nusselt number enhanced. The variations of the local Nusselt number relative to volume concentrations are not uniform. According to the results, an equation was obtained for Nusselt number predicted data using the dimensionless numbers. The relation between local Nusselt number and Re number also compared for other previous work. There are agreement in results and found the maximum difference between results reach to be 6.3% approximately which validate the current computational model.