Aerodynamics of road vehicles, Internal and external flow, Computer Simulation and Design of Thermal Systems, Heat Transfer, Heat Exchangers, Fluid Mechanics & Machines, Computational Fluid Dynamics (CFD)
5
Scopus Publications
117
Scholar Citations
7
Scholar h-index
6
Scholar i10-index
Scopus Publications
Improvement of the aerodynamic behavior of a sport utility vehicle numerically by using some modifications and aerodynamic devices Ahmed Al-Saadi, Khaled Al-Farhany, Kadhim K. Idan Al-Chlaihawi, Wasim Jamshed, Mohamed R. Eid, et al. Scientific Reports, 2022 The present study proposes aerodynamically optimized exterior designs of a sport utility vehicle using computational fluid dynamics analysis based on steady-state Reynolds-averaged Navier–Stokes turbulence models. To achieve an optimal design, modifications of the outer shape and adding some aerodynamic devices are investigated. This study focuses on modifying this vehicle model’s upper and front parts. At the same time, the rear diffuser and spare tire on the back door as a fairing are used as aerodynamic devices for improving streamlines. All these modifications and add-on devices are simulated individually or in combination to achieve the best exterior design. A variety of Reynolds numbers are used for determining the optimization variables. Tetrahedral cells are used throughout the global domain because of the sharp edges in the geometry of the Discovery car model. At the same time, prism cells around car surfaces are adopted to improve the accuracy of the results. A good agreement between the numerical drag coefficient in the present study for the baseline models and the experimental data has been achieved. Changes in the drag and lift coefficients are calculated for all models. It is clear from the numerical results that the use of combined modifications and add-on devices has a significant effect in improving the overall aerodynamic behavior. As a result, the drag coefficient for the optimal design of the Discovery 4th generation is reduced from 0.4 to 0.352 by about 12% compared to the benchmark. Simultaneously, the lift coefficient is 0.037 for optimal design, and it is an acceptable value. It is found that combining all optimal modified configurations can improve both CD and CL simultaneously.
Improvement of the aerodynamic behaviour of the passenger car by using a combine of ditch and base bleed Ahmed Al-Saadi, Khaled Al-Farhany, Ahmed Essa Faisal, Mohammed Azeez Alomari, Wasim Jamshed, et al. Scientific Reports, 2022 The current study investigates different methods to minimize the drag coefficient (CD) without ignoring the safety factor related to the stability of a vehicle, i.e., the lift coefficient (CL). The study was carried out by employing an SUV car analyzed numerically using one of the CFD software, Ansys. Four different models such as realizable k–ε, standard k–ω, shear stress transport k–ω, and Reynolds stress model (RSM). The considered models have been validated with experimental data and found in good agreement. The considered inlet velocity varies from 28 to 40 m/s, the results showed that the drag coefficient and the stability are both improved by applying a modification on the roof of the considered car.
MHD mixed convection of a Cu–water nanofluid flow through a channel with an open trapezoidal cavity and an elliptical obstacle Khaled Al‐Farhany, Mohammed A. Alomari, Ahmed Al‐Saadi, Ali Chamkha, Hakan F. Öztop, et al. Heat Transfer, 2022 In the current work, numerical simulations are achieved to study the properties and the characteristics of fluid flow and heat transfer of (Cu–water) nanofluid under the magnetohydrodynamic effects in a horizontal rectangular canal with an open trapezoidal enclosure and an elliptical obstacle. The cavity lower wall is grooved and represents the heat source while the obstacle represents a stationary cold wall. On the other hand, the rest of the walls are considered adiabatic. The governing equations for this investigation are formulated, nondimensionalized, and then solved by Galerkin finite element approach. The numerical findings were examined across a wide range of Richardson number (0.1 ≤ Ri ≤ 10), Reynolds number (1 ≤ Re ≤ 125), Hartmann number (0 ≤ Ha ≤ 100), and volume fraction of nanofluid (0 ≤ φ ≤ 0.05). The current study's findings demonstrate that the flow strength increases inversely as the Reynolds number rises, which pushes the isotherms down to the lower part of the trapezoidal cavity. The Nuavg rises as the Ri rise, the maximum Nuavg = 10.345 at Ri = 10, Re = 50, ϕ = 0.05, and Ha = 0; however, it reduces with increasing Hartmann number. Also, it increase by increasing ϕ, at Ri = 10, the Nuavg increased by 8.44% when the volume fraction of nanofluid increased from (ϕ = 0–0.05).
An experimental and theoretical study of forced convection from a peltier thermo-electric cooling Kadhim K. Idan Al-Chlaihawi, Ahmed Al-Saadi, Nasr A. Jabbar Iop Conference Series Materials Science and Engineering, 2020 An experimental and theoretical study for heat transfer through thermoelectric cooling system in this paper was presented. An experimental work was conducted to evaluate the performance of a thermoelectric module fitted to a sun flower heat sink with a similar sized heat source. The experimental investigation was done to evaluate the effect of TE input voltage, flow rates of cooling air and heat source (heating element) power input on the performance of a thermoelectric cooling system. Four low heating load (1.7, 2.4, 3.6 and 5 W) were used and hot side was fitted to a sunflower heat sink with forced convection. Experimental results show that the increasing of cooling air flow rates improves system performance, while increasing in applied TE voltage leads to deterioration it. The COPmax obtained is about 4.7 at 2V TE voltages and 5W heating load, and then decreased sharply as voltage further increased and reaches 0.13 at 12V. The results of the current study show that all Thermo-electric Cooling system recorded temperatures increase with increasing in heating load at a constant TE voltage and air flow rate. In addition to that the Tc decreases and Th increases with the increment of input voltage and that can lead to increase of the air temperature passing over heat sink. TE performance is highly affected by air flow rate. The theoretical result validated experimentally and shows an acceptable agreement between them.
Conduction-combined forced and natural convection in a lid-driven parallelogram-shaped enclosure divided by a solid partition Ali J. Chamkha, Salam Hadi Hussain, Farooq Hassan Ali, Ahmed Ali Shaker Progress in Computational Fluid Dynamics, 2012 Conduction-combined forced and natural convection heat transfer flow of air in a differentially heated lid-driven parallelogram-shaped enclosure divided by a solid partition has been formulated and solved numerically using the finite-volume method with the SIMPLE algorithm. For the two-dimensional problem, numerical solutions are obtained for a wide range of Richardson numbers (0.1 ≤Ri ≤ 10), inclination angles of enclosure from the vertical direction (-60° ≤Φ≤ 60°), and thermal conductivity ratios (0.001 ≤K ≤ 10). The results indicate that all of the studied parameters and direction of moving lid have significant effects on Nusselt number and the average skin friction coefficient.
RECENT SCHOLAR PUBLICATIONS
A critical review of forced convection in microchannels GKA Al-Saadi Al-Qadisiyah Journal for Engineering Sciences 18 (3), 239 – 248 , 2025 2025
Numerical Analysis of Thermally Developing and Fully Developed Flow in Different Configurations of Microchannels G Kahdem, A AL-Saadi Engineering Headway 8, 55-72 , 2024 2024
Improvement of the aerodynamic behavior of a sport utility vehicle numerically by using some modifications and aerodynamic devices A Al-Saadi, K Al-Farhany, KK Idan Al-Chlaihawi, W Jamshed, MR Eid, ... Scientific Reports 12 (1), 20272 , 2022 2022 Citations: 10
Improvement of the aerodynamic behaviour of the passenger car by using a combine of ditch and base bleed A Al-Saadi, K Al-Farhany, AE Faisal, MA Alomari, W Jamshed, MR Eid, ... Scientific reports 12 (1), 18462 , 2022 2022 Citations: 17
MHD mixed convection of a Cu–water nanofluid flow through a channel with an open trapezoidal cavity and an elliptical obstacle K Al‐Farhany, MA Alomari, A Al‐Saadi, A Chamkha, HF Öztop, W Al‐Kouz Heat Transfer 51 (2), 1691-1710 , 2022 2022 Citations: 21
Analysing the Effect of the Vehicle's Length on the Aerodynamic Drag AA Ahmed A. S. Al-Saadi, Kadhim Al-Chlaihawi International Journal of Mechanical Engineering 7 (2), 1087-1093 , 2022 2022
Analysis of aerodynamics around tall buildings with several configurations AAS Al-Saadi 2022
An experimental and theoretical study of forced convection from a peltier thermo-electric cooling KK Idan Al-Chlaihawi, A Al-Saadi, NA Jabbar IOP Conference Series: Materials Science and Engineering 870 (1), 012166 , 2020 2020 Citations: 8
Analysis of Novel Techniques of Drag Reduction and Stability Increase for Sport Utility Vehicles using Computational Fluid Dynamics AAS Al-Saadi The University of Leeds , 2019 2019 Citations: 10
Improvement of the Aerodynamic Behaviour of a Land Rover Discovery 4 in Turbulent Flow Using Computational Fluid Dynamics (CFD) TM Ahmed Al-Saadi, Ali Hassanpour 19th International Conference on Aerodynamics and Hydrodynamics 4 (No:1) , 2017 2017
Simulation of aerodynamic behaviour of a road vehicle in turbulent flow A Al-Saadi, A Hassanpour, YG Motlagh, T Mahmud Proceedings of the 25th UKACM Conference on Computational Mechanics 12, 151-154 , 2017 2017 Citations: 4
Simulations of Aerodynamic Behaviour of a Super Utility Vehicle in Turbulent Flow AHTM Ahmed Al-Saadi Royal Academy of Engineering Research Day - Leeds City Region, Poster , 2016 2016
Simulations of aerodynamic behaviour of a super utility vehicle using computational fluid dynamics A Al-Saadi, A Hassanpour, T Mahmud Adv. Automob. Eng 5 (134), 1-5 , 2016 2016 Citations: 14
A Numerical Study of Low Reynolds Number Incompressible Flow at Entrance and Disturbed Regions Of Concentric Circular Pipes AA Shaker Journal of Engineering and Development 16 (1813- 7822), 16-33 , 2012 2012 Citations: 1
Conduction-combined forced and natural convection in a lid-driven parallelogram-shaped enclosure divided by a solid partition AAS Ali J. Chamkha, Salam Hadi Hussain, Farooq Hassan Ali Progress in Computational Fluid Dynamics 12 (5), 309-321 , 2012 2012 Citations: 28
NUMERICAL ANALYSIS OF STEADY FREE CONVECTION PAST OVER VERTICAL PLATE MFT Ahmed Ali Shaker Al-Qadisiya Journal For Engineering Sciences 2 (2), 353-367 , 2009 2009
NEW DESIGN OF POWER SCREW JACK WITH BALL BEARING AA Shaker Second Scientific Conference of the College of Engineering - University of … , 2009 2009
HEAT TRANSFER CALCULATIONS OF NONDEVELOPED STEADY LAMINAR FLOW BETWEEN PARALLEL PLATES AAS T. A. Al-Hattab, A. A. Al-Moosawy The Iraqi Journal For Mechanical And Material Engineering 8 (1), 25-42 , 2008 2008 Citations: 4
MOST CITED SCHOLAR PUBLICATIONS
Conduction-combined forced and natural convection in a lid-driven parallelogram-shaped enclosure divided by a solid partition AAS Ali J. Chamkha, Salam Hadi Hussain, Farooq Hassan Ali Progress in Computational Fluid Dynamics 12 (5), 309-321 , 2012 2012 Citations: 28
MHD mixed convection of a Cu–water nanofluid flow through a channel with an open trapezoidal cavity and an elliptical obstacle K Al‐Farhany, MA Alomari, A Al‐Saadi, A Chamkha, HF Öztop, W Al‐Kouz Heat Transfer 51 (2), 1691-1710 , 2022 2022 Citations: 21
Improvement of the aerodynamic behaviour of the passenger car by using a combine of ditch and base bleed A Al-Saadi, K Al-Farhany, AE Faisal, MA Alomari, W Jamshed, MR Eid, ... Scientific reports 12 (1), 18462 , 2022 2022 Citations: 17
Simulations of aerodynamic behaviour of a super utility vehicle using computational fluid dynamics A Al-Saadi, A Hassanpour, T Mahmud Adv. Automob. Eng 5 (134), 1-5 , 2016 2016 Citations: 14
Improvement of the aerodynamic behavior of a sport utility vehicle numerically by using some modifications and aerodynamic devices A Al-Saadi, K Al-Farhany, KK Idan Al-Chlaihawi, W Jamshed, MR Eid, ... Scientific Reports 12 (1), 20272 , 2022 2022 Citations: 10
Analysis of Novel Techniques of Drag Reduction and Stability Increase for Sport Utility Vehicles using Computational Fluid Dynamics AAS Al-Saadi The University of Leeds , 2019 2019 Citations: 10
An experimental and theoretical study of forced convection from a peltier thermo-electric cooling KK Idan Al-Chlaihawi, A Al-Saadi, NA Jabbar IOP Conference Series: Materials Science and Engineering 870 (1), 012166 , 2020 2020 Citations: 8
Simulation of aerodynamic behaviour of a road vehicle in turbulent flow A Al-Saadi, A Hassanpour, YG Motlagh, T Mahmud Proceedings of the 25th UKACM Conference on Computational Mechanics 12, 151-154 , 2017 2017 Citations: 4
HEAT TRANSFER CALCULATIONS OF NONDEVELOPED STEADY LAMINAR FLOW BETWEEN PARALLEL PLATES AAS T. A. Al-Hattab, A. A. Al-Moosawy The Iraqi Journal For Mechanical And Material Engineering 8 (1), 25-42 , 2008 2008 Citations: 4
A Numerical Study of Low Reynolds Number Incompressible Flow at Entrance and Disturbed Regions Of Concentric Circular Pipes AA Shaker Journal of Engineering and Development 16 (1813- 7822), 16-33 , 2012 2012 Citations: 1
A critical review of forced convection in microchannels GKA Al-Saadi Al-Qadisiyah Journal for Engineering Sciences 18 (3), 239 – 248 , 2025 2025
Numerical Analysis of Thermally Developing and Fully Developed Flow in Different Configurations of Microchannels G Kahdem, A AL-Saadi Engineering Headway 8, 55-72 , 2024 2024
Analysing the Effect of the Vehicle's Length on the Aerodynamic Drag AA Ahmed A. S. Al-Saadi, Kadhim Al-Chlaihawi International Journal of Mechanical Engineering 7 (2), 1087-1093 , 2022 2022
Analysis of aerodynamics around tall buildings with several configurations AAS Al-Saadi 2022
Improvement of the Aerodynamic Behaviour of a Land Rover Discovery 4 in Turbulent Flow Using Computational Fluid Dynamics (CFD) TM Ahmed Al-Saadi, Ali Hassanpour 19th International Conference on Aerodynamics and Hydrodynamics 4 (No:1) , 2017 2017
Simulations of Aerodynamic Behaviour of a Super Utility Vehicle in Turbulent Flow AHTM Ahmed Al-Saadi Royal Academy of Engineering Research Day - Leeds City Region, Poster , 2016 2016
NUMERICAL ANALYSIS OF STEADY FREE CONVECTION PAST OVER VERTICAL PLATE MFT Ahmed Ali Shaker Al-Qadisiya Journal For Engineering Sciences 2 (2), 353-367 , 2009 2009
NEW DESIGN OF POWER SCREW JACK WITH BALL BEARING AA Shaker Second Scientific Conference of the College of Engineering - University of … , 2009 2009
