Abd Alhamid R Sarhan

@swin.edu.au

Department of Mechanical and Product Design Engineering
Swinburne University of Technology

Abd Alhamid R Sarhan


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https://researchid.co/asarhan
27

Scopus Publications

864

Scholar Citations

15

Scholar h-index

19

Scholar i10-index

Scopus Publications

  • Numerical investigation of thermoelectric generator leg length optimization for building wall integration under low temperature Gradients: A COMSOL Multiphysics study
    Abdulrahman Homadi, Abd Alhamid Rafea Sarhan, Julian Post
    Thermal Science and Engineering Progress, 2026
  • The use of finite element models for backface deformation and body armour design: a systematic review
    Abd Alhamid R. Sarhan, Melanie Franklyn, Peter V. S. Lee
    Computer Methods in Biomechanics and Biomedical Engineering, 2025
    While injuries sustained from body armour backface deformation (BFD) have not been well-documented in military injury trauma registries, data from US law enforcement officers, animal tests and currently available data pertaining to military combatants has shown that BFD can not only cause minor injuries, but also result in serious trauma. However, the nature and severity of injuries sustained depends on a multitude of factors including the projectile type, the impact location and velocity, and the specific type of body armour worn. The difficulties involved in current measurement techniques for ballistic testing has led researchers to seek alternative techniques to evaluate the level of protection from body armour, such as the finite element (FE) method. In the current study, a systematic review of the open literature was undertaken using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology. The aim was to summarise the literature pertaining to the development and application of FE models to investigate body armour BFD and behind armour blunt trauma (BABT), and included FE models representing the projectile, clay-based mediums, ballistic gelatine and the human torso. Using the keywords 'behind armour*', 'ballistic blunt trauma', 'BABT', 'backface signature', 'backface deformation', 'BFS', 'BFD', 'wound ballistic', 'ballistic impact testing', 'body armour', 'bullet proof vest', 'ballistic vest', 'Finite Element*' and 'FE', an electronic database search of EBSCOhost, Google Scholar, ProQuest, Scopus, Standards, Web of Science and PubMed was conducted, and included peer-reviewed journal articles, review papers, research reports, conference papers, and MSc or PhD theses. While this research demonstrates the potential of FE analysis for recreating realistic blunt impact scenarios and enhancing the current understanding of BABT mechanisms, a common limitation in most studies is the lack of validation. Thus, in order to address this issue, it is proposed that injury predictions from FE models be correlated with trauma data from soldiers who have sustained BABT. Consequently, pressure and energy distributions within the organs can be used to interpret the effects of non-penetrating ballistic impacts on the human torso. Bridging the gap between simulation and real-world data is essential in order to validate FE models and enhance their utility in optimising body armour design and employing injury mitigation strategies.
  • Enhancing Energy Efficiency of Thermomagnetic Generators: A Comprehensive Study on Frequency and Heat Dissipation
    Abdulrahman Homadi, Abd Alhamid Rafea Sarhan
    Mathematics, 2024
    This study explores the design and optimization of thermomagnetic generators with a primary emphasis on enhancing energy efficiency. The core objectives revolve around improving power generation and efficient heat dissipation. We conducted an extensive investigation, systematically varying parameters such as dimensions, coil turns, and material properties, including temperatures and magnetization. At the heart of this research lies the utilization of the variable magnetic susceptibility of ferromagnetic–paramagnetic materials within distinct temperature zones. Gadolinium (Gd) was selected due to its unique Curie temperature (TC) closely aligned with room temperature. The Gd disk’s motion serves a dual purpose—acting as a heat conveyor from source to sink and inducing voltages. The synergy between a copper wire coiled around the Gd disk and the magnetic field generated by a permanent magnet (PM) facilitates voltage induction. The dynamic motion of the Gd disk, driven by changes in net forces (permanent magnet force, gravity force, and spring force), powers this energy conversion process. This versatile technique holds promise across various applications, especially in scenarios characterized by significant waste heat, such as engines and solar panels. Our multifaceted optimization approach not only enhances our understanding of thermomagnetic generators but also underscores their potential as sustainable and efficient contributors to energy solutions.
  • Experimental and numerical study of free-falling streams of particles impacting an inclined surface
    David Dodds, Abd Alhamid Rafea Sarhan, Jamal Naser
    Experimental and Computational Multiphase Flow, 2023
    This paper presents a detailed experimental and numerical analysis of free-falling particle streams impacting a 45° inclined surface of differing materials. The particles used in this study were glass spheres with average diameters of 136 and 342 µm and a density of 2500 kg/m3. The three mass flow rates considered are 50, 150, and 250 grams per minute (gpm). The effect of wall material on the collision process was also analysed. Special attention was paid to the influence of wall roughness. Therefore, a plate of stainless steel with polished surface, an aluminium sheet, and a Perspex plate with similar properties to those of the rest of the wall sections were used. The experimental data were used to improve and validate a wall collision model in the frame of the Lagrangian approach. A new drag force formula that includes the effects of particle concentration as well as particle Reynolds number was implemented into commercially available codes from CFX4-4 package. It was found that the improved CFD model better predicted the experimental measurements for the particle rebound properties. The rough-wall model in these results showed greater effect on smaller particles than on larger particles. The results also showed that the improved CFD model predicted the velocity changes slightly better than the standard model, and this was confirmed by both the quantitative velocity comparisons and the qualitative concentration plots. Finally, the inclusion of the particle-particle collision was shown to be the dominant factor in providing the dispersion of the particles post collision. Without a sufficient particle-particle collision model, the standard model showed all particles behaving virtually identical, with the main particle stream continuing after the collision process.
  • Numerical Analysis of Multi-Particulate Flow Behaviour in CFB Riser Coupled with a Kinetic Theory
    Fardausur Rahaman, Abd Alhamid Rafea Sarhan, Jamal Naser
    Fluids, 2023
    In this work, a three-dimensional CFD model for the gas–solid flow of two different particle sizes in a CFB riser coupled with a kinetic theory (KT) has been developed. The properties of the solid phases are calculated using the proposed multi-particle kinetic theory. The CFD model is implemented in the commercial CFD software CFX4.4. In the current model, one gas phase and two solid phases are used. However, the model is generalised for one carrier phase and N number of solid phases to enable a realistic particle size distribution in the system. The momentum, volume fraction and granular temperature equations are solved for each individual solid phase and implemented into the CFD model through user-defined functions (UDFs). The k-ε turbulence model is used in simulating the circulating fluidised bed model. For verification, simulation results obtained with the new KT model were compared with experimental data, and then the model was used for further analysis. It was found that the proposed multi-particle model can be used to calculate the properties of gas–solid systems with particles of different sizes and/or densities, removing the assumptions of previous models that required all the particles to be of an equal mass, size and density.
  • CFD Investigation into the Effects of Surrounding Particle Location on the Drag Coefficient
    David Dodds, Abd Alhamid R. Sarhan, Jamal Naser
    Fluids, 2022
    In the simulation of dilute gas-solid flows such as those seen in many industrial applications, the Lagrangian Particle Tracking method is used to track packets of individual particles through a converged fluid field. In the tracking of these particles, the most dominant forces acting upon the particles are those of gravity and drag. In order to accurately predict particle motion, the determination of the aforementioned forces become of the upmost importance, and hence an improved drag force formula was developed to incorporate the effects of particle concentration and particle Reynolds number. The present CFD study examines the individual effects of particles located both perpendicular and parallel to the flow direction, as well as the effect of a particle entrain within an infinite matrix of evenly distributed particles. Results show that neighbouring particles perpendicular to the flow (Model 2) have an effect of increasing the drag force at close separation distances, but this becomes negligible between 5–10 particle diameters depending on particle Reynolds number (Rep). When entrained in an infinite line of particles co-aligned with the flow (Model 1), the drag force is remarkably reduced at close separation distances and increases as the distance increases. The results of the infinite matrix of particles (Model 3) show that, although not apparent in the individual model, the effect of side particles is experienced many particle diameters downstream.
  • Numerical study of when and who will get infected by coronavirus in passenger car
    Abd Alhamid R. Sarhan, Parisa Naser, Jamal Naser
    Environmental Science and Pollution Research, 2022
    In light of the COVID-19 pandemic, it is becoming extremely necessary to assess respiratory disease transmission in passenger cars. This study numerically investigated the human respiration activities’ effects, such as breathing and speaking, on the transport characteristics of respiratory-induced contaminants in passenger car. The main objective of the present study is to accurately predict when and who will get infected by coronavirus while sharing a passenger car with a patient of COVID-19 or similar viruses. To achieve this goal, transient simulations were conducted in passenger car. We conducted a 3D computational fluid dynamics (CFD)-based investigation of indoor airflow and the associated aerosol transport in a passenger car. The Eulerian-Eulerian flow model coupled with k-ε turbulence approach was used to track respiratory contaminants with diameter ≥ 1 μm that were released by different passengers within the passenger car. The results showed that around 6.38 min, this is all that you need to get infected with COVID-19 when sharing a poorly ventilated car with a driver who got coronavirus. It also has been found that enhancing the ventilation system of the passenger car will reduce the risk of contracting Coronavirus. The predicted results could be useful for future engineering studies aimed at designing public transport and passenger cars to face the spread of droplets that may be contaminated with pathogens.
  • Aerodynamic Prediction of Time Duration to Becoming Infected with Coronavirus in a Public Place
    Abd Alhamid R. Sarhan, Parisa Naser, Jamal Naser
    Fluids, 2022
    The COVID-19 pandemic has caused panic and chaos that modern society has never seen before. Despite their paramount importance, the transmission routes of coronavirus SARS-CoV-2 remain unclear and a point of contention between the various sectors. Recent studies strongly suggest that COVID-19 could be transmitted via air in inadequately ventilated environments. The present study investigates the possibility of the aerosol transmission of coronavirus SARS-CoV-2 and illustrates the associated environmental conditions. The main objective of the current work is to accurately predict the time duration of getting an infection while sharing an indoor space with a patient of COVID-19 or similar viruses. We conducted a 3D computational fluid dynamics (CFD)-based investigation of indoor airflow and the associated aerosol transport in a restaurant setting, where likely cases of airflow-induced infection of COVID-19 caused by asymptomatic individuals were reported in Guangzhou, China. The Eulerian–Eulerian flow model coupled with the k-Ɛ turbulence approach was employed to resolve complex indoor processes, including human respiration activities, such as breathing, speaking, and sneezing. The predicted results suggest that 10 minutes are enough to become infected with COVID-19 when sharing a Table with coronavirus patients. The results also showed that although changing the ventilation rate will improve the quality of air within closed spaces, it will not be enough to protect a person from COVID-19. This model may be suitable for future engineering analyses aimed at reshaping public spaces and indoor common areas to face the spread of aerosols and droplets that may contain pathogens.
  • Numerical Modeling of Flow through Foam Nodes within the Dry and Wet Limits
    Dhefaf Raisan Faisal, John Aunna, Abd Alhamid Sarhan, Jamal Naser
    Langmuir, 2021
    We present a numerical simulation using three-dimensional microscale models to illustrate flow dynamics through different foam geometries. These were designed to represent the flow with various liquid volume fractions throughout the Plateau border (PB) and node system within the "dry" limit and throughout the two nodes and PB system within the "wet" limit. Most surfaces in the models involve a gas-liquid interface. Here, the stress-balance boundary condition was applied to achieve coupling between the surface and bulk. The three-dimensional Navier-Stokes equation along with the continuity equation was solved using the finite volume approach, and a qualitative evaluation of flow velocities in different foam geometries was obtained. The numerical results were validated against the available experimental results for foam permeabilities in the nodes and PBs. Discrepancies were expected between the simulated and empirical values as the latter values were obtained by considering only the viscous losses in the PBs. Furthermore, the scaled resistance to flow for varying gas-liquid interface mobilities and liquid fractions was studied. The individual geometrical characteristics of the node and PB components were compared to investigate the PB- and node-dominated flow regimes numerically. Additionally, more accurate information was obtained for comparing the average flow velocities within the node-PB and the two-node-PB systems, providing a better understanding of the effect of a gas-liquid interface on foam flow. We eventually show that when the foam geometry is correctly described, the relative effect of the geometrical factors of the PB and node components of system models can be evaluated, allowing a numerical flow simulation with a unique parameter-the Boussinesq number (Bo).
  • Bubble Column CFD Model with Effects of Forced Oscillations on Bubble Dynamics
    Abd Alhamid Rafea Sarhan, M. Rezwanul Karim, Jamal Naser
    Chemical Engineering and Technology, 2021
  • Numerical analysis of dilute gas-solid flows in a horizontal pipe and a 90° bend coupled with a newly developed drag model
    D. Dodds, A.R. Sarhan, J. Naser
    Chemical Engineering Research and Design, 2020
  • Experimental and numerical study of drag forces on particles in clusters
    D. Dodds, A.R. Sarhan, J. Naser
    Powder Technology, 2020
  • Modelling detachment rates of hydrophobic particles from bubbles in a froth phase
    A.R. Sarhan, A.M. Homadi, J. Naser
    Separation and Purification Technology, 2020
  • CFD simulation of biomass thermal conversion under air/oxy-fuel conditions in a reciprocating grate boiler
    Md Rezwanul Karim, Arafat Ahmed Bhuiyan, Abd Alhamid Rafea Sarhan, Jamal Naser
    Renewable Energy, 2020
  • Kinetic theory for multi-particulate flow: Description of granular flow with rotary movement of particles
    M.F. Rahaman, A.R. Sarhan, J. Naser
    Powder Technology, 2020
  • Numerical prediction of froth layer height in slurry column
    A. R. Sarhan, Md. Abdul Karim Miah, J. Naser
    Aip Conference Proceedings, 2019
  • Experimental investigation on the effect of vertical vibration on thermal performances of rectangular flat plate
    A.R. Sarhan, M.R. Karim, Z.K. Kadhim, J. Naser
    Experimental Thermal and Fluid Science, 2019
  • CFD model simulation of bubble surface area flux in flotation column reactor in presence of minerals
    A.R. Sarhan, J. Naser, G. Brooks
    International Journal of Mining Science and Technology, 2018
  • CFD modeling of bubble column: Influence of physico-chemical properties of the gas/liquid phases properties on bubble formation
    A.R. Sarhan, J. Naser, G. Brooks
    Separation and Purification Technology, 2018
  • Effects of particle size and concentration on bubble coalescence and froth formation in a slurry bubble column
    A.R. Sarhan, J. Naser, G. Brooks
    Particuology, 2018
  • Bubbly flow with particle attachment and detachment–A multi-phase CFD study
    A. R. Sarhan, J. Naser, G. Brooks
    Separation Science and Technology Philadelphia, 2018
  • Numerical modeling of three-phase slurry bubble column: Study of particle effects
    Abd Alhamid R. Sarhan, M. R. Rezwanul Karim, Jamal Naser, Geoffrey Brooks
    Aip Conference Proceedings, 2017
  • Numerical simulation of froth formation in aerated slurry coupled with population balance modelling
    A. R. Sarhan, J. Naser, G. Brooks
    Canadian Metallurgical Quarterly, 2017
  • CFD analysis of solid particles properties effect in three-phase flotation column
    A.R. Sarhan, J. Naser, G. Brooks
    Separation and Purification Technology, 2017
  • CFD Modeling of Three-phase Flotation Column Incorporating a Population Balance Model
    A.R. Sarhan, J. Naser, G. Brooks
    Procedia Engineering, 2017

RECENT SCHOLAR PUBLICATIONS

  • The use of finite element models for backface deformation and body armour design: a systematic review
    AAR Sarhan, M Franklyn, PVS Lee
    Computer methods in biomechanics and biomedical engineering 28 (1), 121-143 , 2025
    2025
    Citations: 9
  • Enhancing Energy Efficiency of Thermomagnetic Generators: A Comprehensive Study on Frequency and Heat Dissipation
    A Homadi, AAR Sarhan
    Mathematics 12 (8), 1222 , 2024
    2024
    Citations: 1
  • Experimental and numerical study of free-falling streams of particles impacting an inclined surface
    D Dodds, AAR Sarhan, J Naser
    Experimental and Computational Multiphase Flow 5 (4), 381-395 , 2023
    2023
    Citations: 15
  • Numerical Analysis of Multi-Particulate Flow Behaviour in CFB Riser Coupled with a Kinetic Theory
    F Rahaman, AAR Sarhan, J Naser
    Fluids 8 (9), 257 , 2023
    2023
  • CFD investigation into the effects of surrounding particle location on the drag coefficient
    D Dodds, AAR Sarhan, J Naser
    Fluids 7 (10), 331 , 2022
    2022
    Citations: 6
  • Numerical study of when and who will get infected by coronavirus in passenger car
    AAR Sarhan, P Naser, J Naser
    Environmental Science and Pollution Research 29 (38), 57232-57247 , 2022
    2022
    Citations: 16
  • Aerodynamic prediction of time duration to becoming infected with coronavirus in a public place
    AAR Sarhan, P Naser, J Naser
    Fluids 7 (5), 176 , 2022
    2022
    Citations: 6
  • COVID-19 aerodynamic evaluation of social distancing in indoor environments, a numerical study
    AR Sarhan, P Naser, J Naser
    Journal of Environmental Health Science and Engineering 19 (2), 1969-1978 , 2021
    2021
    Citations: 33
  • Numerical Modeling of Flow through Foam Nodes within the Dry and Wet Limits
    DR Faisal, J Aunna, AA Sarhan, J Naser
    Langmuir 37 (30), 8929-8936 , 2021
    2021
    Citations: 3
  • Bubble column CFD model with effects of forced oscillations on bubble dynamics
    AAR Sarhan, MR Karim, J Naser
    Chemical Engineering & Technology 44 (6), 1111-1120 , 2021
    2021
    Citations: 14
  • Numerical analysis of dilute gas-solid flows in a horizontal pipe and a 90 bend coupled with a newly developed drag model
    D Dodds, AR Sarhan, J Naser
    Chemical Engineering Research and Design 163, 169-181 , 2020
    2020
    Citations: 6
  • Experimental and numerical study of drag forces on particles in clusters
    D Dodds, AR Sarhan, J Naser
    Powder Technology 371, 195-208 , 2020
    2020
    Citations: 17
  • Modelling detachment rates of hydrophobic particles from bubbles in a froth phase
    AR Sarhan, AM Homadi, J Naser
    Separation and Purification Technology 235, 116200 , 2020
    2020
    Citations: 26
  • CFD simulation of biomass thermal conversion under air/oxy-fuel conditions in a reciprocating grate boiler
    MR Karim, AA Bhuiyan, J Naser
    Renewable Energy 146, 1416-1428 , 2020
    2020
    Citations: 80
  • Kinetic theory for multi-particulate flow: Description of granular flow with rotary movement of particles
    MF Rahaman, AR Sarhan, J Naser
    Powder Technology 360, 780-788 , 2020
    2020
    Citations: 15
  • Numerical Simulation of Froth Flotation Column with Population Balance Modeling
    AAR Sarhan
    Swinburne , 2020
    2020
  • Numerical prediction of froth layer height in slurry column
    AR Sarhan, MAK Miah, J Naser
    AIP Conference Proceedings 2121 (1), 040005 , 2019
    2019
  • Experimental investigation on the effect of vertical vibration on thermal performances of rectangular flat plate
    AR Sarhan, MR Karim, ZK Kadhim, J Naser
    Experimental Thermal and Fluid Science 101, 231-240 , 2019
    2019
    Citations: 32
  • CFD model simulation of bubble surface area flux in flotation column reactor in presence of minerals
    AR Sarhan, J Naser, G Brooks
    International Journal of Mining Science and Technology 28 (6), 999-1007 , 2018
    2018
    Citations: 70
  • CFD modeling of bubble column: Influence of physico-chemical properties of the gas/liquid phases properties on bubble formation
    AR Sarhan, J Naser, G Brooks
    Separation and Purification Technology 201, 130-138 , 2018
    2018
    Citations: 86

MOST CITED SCHOLAR PUBLICATIONS

  • CFD simulation on influence of suspended solid particles on bubbles' coalescence rate in flotation cell
    AR Sarhan, J Naser, G Brooks
    International Journal of Mineral Processing 146, 54-64 , 2016
    2016
    Citations: 104
  • CFD modeling of bubble column: Influence of physico-chemical properties of the gas/liquid phases properties on bubble formation
    AR Sarhan, J Naser, G Brooks
    Separation and Purification Technology 201, 130-138 , 2018
    2018
    Citations: 86
  • Effects of particle size and concentration on bubble coalescence and froth formation in a slurry bubble column
    AR Sarhan, J Naser, G Brooks
    Particuology 36, 82-95 , 2018
    2018
    Citations: 86
  • CFD simulation of biomass thermal conversion under air/oxy-fuel conditions in a reciprocating grate boiler
    MR Karim, AA Bhuiyan, J Naser
    Renewable Energy 146, 1416-1428 , 2020
    2020
    Citations: 80
  • CFD analysis of solid particles properties effect in three-phase flotation column
    AR Sarhan, J Naser, G Brooks
    Separation and Purification Technology 185, 1-9 , 2017
    2017
    Citations: 77
  • CFD model simulation of bubble surface area flux in flotation column reactor in presence of minerals
    AR Sarhan, J Naser, G Brooks
    International Journal of Mining Science and Technology 28 (6), 999-1007 , 2018
    2018
    Citations: 70
  • Bubbly flow with particle attachment and detachment–a multi-phase CFD study
    AR Sarhan, J Naser, G Brooks
    Separation Science and Technology 53 (1), 181-197 , 2018
    2018
    Citations: 44
  • Numerical simulation of froth formation in aerated slurry coupled with population balance modelling
    AR Sarhan, J Naser, G Brooks
    Canadian Metallurgical Quarterly 56 (1), 45-57 , 2017
    2017
    Citations: 44
  • CFD modeling of three-phase flotation column incorporating a population balance model
    AR Sarhan, J Naser, G Brooks
    Procedia Engineering 184, 313-317 , 2017
    2017
    Citations: 38
  • COVID-19 aerodynamic evaluation of social distancing in indoor environments, a numerical study
    AR Sarhan, P Naser, J Naser
    Journal of Environmental Health Science and Engineering 19 (2), 1969-1978 , 2021
    2021
    Citations: 33
  • Experimental investigation on the effect of vertical vibration on thermal performances of rectangular flat plate
    AR Sarhan, MR Karim, ZK Kadhim, J Naser
    Experimental Thermal and Fluid Science 101, 231-240 , 2019
    2019
    Citations: 32
  • Modelling detachment rates of hydrophobic particles from bubbles in a froth phase
    AR Sarhan, AM Homadi, J Naser
    Separation and Purification Technology 235, 116200 , 2020
    2020
    Citations: 26
  • Experimental and numerical study of drag forces on particles in clusters
    D Dodds, AR Sarhan, J Naser
    Powder Technology 371, 195-208 , 2020
    2020
    Citations: 17
  • Vertical forced vibration effect on natural convective performance of longitudinal fin heat sinks
    AR Sarhan
    Tikrit journal of engineering sciences 20 (2), 60-69 , 2013
    2013
    Citations: 17
  • Numerical study of when and who will get infected by coronavirus in passenger car
    AAR Sarhan, P Naser, J Naser
    Environmental Science and Pollution Research 29 (38), 57232-57247 , 2022
    2022
    Citations: 16
  • Experimental and numerical study of free-falling streams of particles impacting an inclined surface
    D Dodds, AAR Sarhan, J Naser
    Experimental and Computational Multiphase Flow 5 (4), 381-395 , 2023
    2023
    Citations: 15
  • Kinetic theory for multi-particulate flow: Description of granular flow with rotary movement of particles
    MF Rahaman, AR Sarhan, J Naser
    Powder Technology 360, 780-788 , 2020
    2020
    Citations: 15
  • Bubble column CFD model with effects of forced oscillations on bubble dynamics
    AAR Sarhan, MR Karim, J Naser
    Chemical Engineering & Technology 44 (6), 1111-1120 , 2021
    2021
    Citations: 14
  • A review of CFD modelling of flotation cells
    AR Sarhan, J Naser, G Brooks
    Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014 , 2014
    2014
    Citations: 12
  • The use of finite element models for backface deformation and body armour design: a systematic review
    AAR Sarhan, M Franklyn, PVS Lee
    Computer methods in biomechanics and biomedical engineering 28 (1), 121-143 , 2025
    2025
    Citations: 9