Assist. Prof. Dr. Kadhim H. Suffer

@nahrainuniv.edu.iq

Engineering collage/ Mechanical Engineering Department
Al-Nahrain University

Assist. Prof. Dr. Kadhim H. Suffer


                  Download Compact PDF  
https://researchid.co/kadhimhsuffer

RESEARCH INTERESTS

Refrigeration and Air-Conditioning/ Thermal Energy Storage/ Renewable energy/ Solar Energy/ Wind Energy/ Computational Fluid Dynamics (CFD)
20

Scopus Publications

331

Scholar Citations

6

Scholar h-index

5

Scholar i10-index

Scopus Publications

  • Optical and Thermal Performance Enhancement of a Parabolic Trough Solar Collector With Helical Turbulators and Modified Receiver Geometries
    Kadhim H. Suffer, Ali Jawad Obaid, Mustafa J. Al‐Dulaimi
    Heat Transfer, 2026
    Enhancing the thermal efficiency of parabolic trough solar collectors (PTCs) is vital for optimizing concentrated solar power systems and industrial solar thermal applications. Conventional receiver tubes often suffer from limited internal heat transfer and uneven solar flux distribution, reducing energy conversion efficiency. This study presents a comprehensive numerical investigation of PTC receivers with modified tube geometries ‐circular, elliptical, and hexagonal‐integrated with internal helical turbulators. Optical performance was evaluated using Monte Carlo Ray Tracing (MCRT) to determine solar flux distribution and identify optimal receiver eccentricities, while thermal–hydraulic behavior was assessed via computational fluid dynamics (CFD) simulations over Reynolds numbers from 3000 to 11,000. Optimal eccentricities were determined as −12, −8, and −12 mm for circular, elliptical, and hexagonal tubes, respectively. The elliptical tube achieved the highest optical interception, with an average intercept factor of 80.13%. The introduction of helical turbulators significantly enhanced heat transfer, increasing Nusselt numbers by 31%, 45%, and 46% for circular, elliptical, and hexagonal tubes, respectively. Corresponding friction factor ratios ranged from 1.6 to 2.0, highlighting the trade‐off between heat transfer improvement and flow resistance. Overall, the elliptical receiver with a small‐pitch helical turbulator delivered the best combined thermo‐optical performance.
  • Modeling of Shell and Various Tube Shapes with Annular Fins for Thermal Solar Energy Storage System
    Hiba A. Hasan, Kadhim H. Suffer
    E3s Web of Conferences, 2024
    With increasing global interest in transitioning from old, expensive fossil fuels to clean energies, particularly solar energy, which is abundant in most regions of the world, the challenge arises of storing solar energy generated during the day for reuse at night. Therefore, many researchers have focused their efforts on developing and enhancing thermal storage systems for solar thermal energy. Phase change materials are considered the most suitable and least expensive when used in thermal solar energy storage systems, especially in shell-and-tube heat exchangers. In this study, the issue of latent heat storage in a shell heat exchanger was addressed using different tube shapes (tube, nozzle, and reducer), surrounded by annular fins. The main objective was to simulate the solidification process for the proposed models, which represent the state during which thermal energy is released into the phase change material during the night and stored during the day. The models were designed using SolidWorks software. CFD technology, employing finite volume and enthalpy methods, was utilized with ANSYS-Fluent 19 software for numerical simulations. The results obtained from the CFD predictions indicated that the variation in liquid fraction among the proposed models was minimal. The tube model exhibited a lower average liquid fraction than other models, suggesting faster solidification of paraffin compared to the others. In the upper part of the reducer model, where there is less paraffin, the temperature of the paraffin is close to the wall surface temperature, similar to the nozzle model. The reduction in solidification time achieved by the tube model was 25.7% compared to the nozzle model, while the reducer model delayed solidification time by approximately 16.3% compared to the tube model. Designing the heat exchanger with a tube is more suitable for the solidification process, whereas the nozzle is preferred for the melting process. There was a satisfactory agreement between numerical and published experimental findings.
  • Thermal performance enhancement of energy storage system using spiral-wired tube heat exchanger
    Hiba A. Hasan, Kadhim H. Suffer
    Energy Sources Part A Recovery Utilization and Environmental Effects, 2023
    A well-design latent heat storage system substantially increases the acceptance and reliability of renewable energy resources and makes them available permanently. For this purpose, there are many ways to enhance the thermal performance of the latent heat storage system. In this work, it is suggested to use the spiral-wired tube, a finned tube with a coiled helical spiral connecting the fins end. The study includes a comparison between three different models of storage systems: shell and tube heat exchanger (STHX), shell and finned tube heat exchanger (SFTHX), and shell and spiral-wired tube heat exchanger (SSWTHX). The proposed models are designed and tested experimentally, and three-dimensional CFD models are developed based on the enthalpy-porosity method. The results proved that the sequence of the three models in terms of melting speed was SSWTHX, SFTHX and STHX, respectively. The distinctive design of SSWTHX improves heat transfer and thus improves the performance of the latent heat storage system. The change in the distribution of paraffin temperature was faster in SSWTHX, which gave the highest temperatures, and accelerated the melting process by 37.5% compared to STHX. While the melting time reduction of SFTHX compared with STHX reached 21.3%. There was a good agreement when the numerical results were compared to the experimental data.
  • ENHANCING EFFICIENCY OF THE RULA BY INTERFERING WITH FUZZY LOGIC
    Journal of Theoretical and Applied Information Technology, 2022
  • Temperature Distribution Analysis of Lithium-Ion Polymer Battery Surface
    R. Murali, Z. M. Razlan, S. A. Bakar, Kadhim H. Suffer, Z. Ibrahim, W.K. Wan, Rudzuan M. N., M. F. H. Rani
    2022 9th International Conference on Electrical and Electronics Engineering Iceee 2022, 2022
    The main objective of this study is to investigate the heat load generated by the Lithium-ion (Li-ion) battery during the completion of the cycle. Besides that, the objective is also to identify the most affected surface of the Li-ion battery towards the temperature during the charging and discharging process. An experiment is carried out for five different conditions of battery to obtain the data for heat load calculation purposes. The five conditions are differences in discharge ampere. From the result obtained there are differences in heat load generated by the battery during the charging and discharging process for every condition. Furthermore, the greater the discharge ampere, the lower the time taken for the battery to discharge and the higher the heat load generated by the battery. Besides that, an experiment to investigate the temperature distribution along the experiment is also carried out. Four surfaces of battery (front, right, left, back in vertical position of battery) are put into concern in obtaining the temperature distribution. Every surface gives a different temperature distribution during the experiment. Surface 4 recorded the highest average temperature distribution. Thus, the cooling system will consider the cooling capacity at this surface.
  • Constructal design of flat tubes cooled by natural convection
    Ahmed Waheed Mustafa, Kadhim H. Suffer, Ameer B. Filaih
    Heat Transfer, 2021
    Abstract A set of vertical flat tubes cooled by natural convection and placed in a finite size space is designed based on the constructal law. The constraint in this design is the size of the space where the tubes are placed. The freedom inside the space is the distance between the tubes. When the constructal law is applied, the optimal distance between the tubes is determined. Rayleigh numbers are taken as ( Ra = 10 3 , 10 4 , and 10 5 ). The dimensionless tube diameter (tube diameter/tube height) is changed from ( D * = 0.2) to ( D * = 1) (circular tube). All the tubes are heated to the same wall temperature. The air used to cool the tubes has a Prandtl number ( Pr = 0.72). The equations of conservation of mass, momentum, and energy for steady, two‐dimensional, and incompressible flow are solved by the finite volume method. The result showed that the best or optimal distance at a given Rayleigh number remains constant for all tube diameters. The result also showed that the number of the small diameter tubes must be more than the number of the large‐diameter tubes for the same Rayleigh number and the same size of the space to make the heat flow from the tubes to the coolant easier.
  • Preparation of ZnO nanoparticles by 1064/532nm laser ablation and studying the effect of the ablation wavelength
    Munaf S. Majeed, Rabea Q. Nafil, Marwa F. Abdul Jabbar, Kadhim H. Suffer
    Materials Science Forum, 2021
    We prepared Zinc oxide nanomaterial employing PLA (pulsed laser ablation) technique. A pure Zn target was immersed in ultra-pure water (UPW) and it was subjected to several pulses (1st. and 2nd. harmonic) of the pumping Nd: YAG laser. The influence of changing laser’s wavelength (1064, 532) nm on the characterization of the produced nanoparticles was studied. The results obtained from studying the structure, topography, and morphology of the product showed that the particles have a hexagonal shape. Also, changing the wavelength of the laser from 532nm to 1064nm leads to size reduction and density increasing of the nanoparticles.
  • Experimental implementation of thermal enhancement performance of air heat exchanger’s pipes utilizing unconventional turbulator
    Ali Abdulwahab Ismaeel, Nassr Fadhil Hussein, Kadhim H. Suffer, Zuradzman M Razlan
    Eureka Physics and Engineering, 2021
    Heat exchangers are widely used in industry, however, raising their performance are important for the variety of applications. Consequently, efficiency improvement associated with low production cost is considered in this experimental work. The current study aims to enhance the rate of heat transfer in pipe-type heat exchangers experimentally by using a novel nozzle as a turbulator. The cross-sectional shape of the nozzle is hexagonal, and the diameter ratio DR is equal to 0.5. Constant heat flux was maintained in the vicinity of the section of the test tube, while the working fluid was pumped into the open system at six discrete Reynolds number values ranging from 6000 to 19500. To investigate the effect of distance among the pieces, three turbulators with different numbers were assigned and named as (N=4, 5 and 6). The results indicated an increase of 172 %, 194 % and 216 % of the heat transfer rate for cases 4, 5 and 6 respectively comparing to the benchmark tube. On the other hand, the friction factor values increased remarkably due to the inserting of turbulators by about of 722.9 % for N=4, 823.9 % for N=5 and 886.7 % for N=6 compared to a plain tube case. Moreover, it has been established that with the insertion of 6 pieces two enhancements was observed; heat transfer rate and thermal performance, where, thermal performance of all cases exceeds unity (maximum thermal performance of 1.62 has been obtained by inserting 6 pieces of hexagonal nozzles turbulators). A comparison with another types of vortex generators shows the gap between the turbulator and heated surface offers a solution for problems occurred in the pipes of heat exchanger. The study therefore suggests a wider practical implementation of the turbulators
  • Modeling of the aerodynamics of the integrated four blades (VAWT) having movable vanes
    Kadhim H. Suffer, Amina K. Hussain, S. Hussain
    Aip Conference Proceedings, 2020
    One of the economic problems facing all the public at present is the increasing demand for energy. Because of industrial development, fossil fuel depletion is on the increase, so the use of renewable energies as an alternative to fossil fuels has become apparent. In addition to solving problems caused by fossil fuels on the climate. Wind power is one of the most important renewable energies; the wind turbine is the machine that converts wind energy into mechanical energy. Which is used to pumping water, grind grain and generate electricity. The aim of this work is to study the aerodynamic performance by using Computational Fluid Dynamics (CFD) of a model of a vertical axis wind turbine, which has four integrated blades (each of which consisted of a vertical movable vane with Darius-type airfoil). The objective from combining the airfoil with the vanes comes to solve the low starting torque of the airfoil. The (SST) k-ω turbulence model and finite volume method were used with ANSYS FLUENT 16.1 software. The results concluded from the present numerical simulation give that the drag coefficient Cd is in maximum value at the positive side at 90° angular position, and Cd is decreased to the minimum value in the negative side at 45° angular position. The drop in the static pressure on the positive side is higher than on the negative side. The aerodynamics characteristics results represented by the static and dynamic pressures distributions and velocity distribution show that the air exerted to the turbine blade on the negative side is easily passes without any resistance. Therefore, it can be concluded that the addition of the vertical movable vanes with straight airfoil in one construction of a vertical wind turbine blade helps to solve the Darrieus straight airfoil starting torque and increases the rotation of the turbine rotor.
  • Numerical investigation of PCM thermal storage in water solar collector
    Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2020
  • Experimental and numerical investigation of heat transfer enhancement by using different geometry coiled tubes
    Journal of Mechanical Engineering Research and Developments, 2020
  • Induction motor rotor: Energy efficiency improvement on economic and environment
    Mohd Khairil Rahmat, Yanawati Binti Yahya, Kadhim H. Suffer
    Aip Conference Proceedings, 2019
  • Numerical investigation of the aerodynamic characteristics of a coupling of the three blades VAWT with a movable vanes
    Kadhim H. Suffer, Isam E. Yousif, Salsuwanda Bin Selamat
    Aip Conference Proceedings, 2019
  • Structure constant analyzing of SLG beam Kolmogorov in atmospheric slant path propagation
    Hussein Thary Khamees, Assad H. Thary Al-Ghrairi, Kadhim H. Suffer, Hayder H. Thary
    Aip Conference Proceedings, 2019
  • Numerical investigation of the aerodynamic characteristics for the integrated vertical movable vanes with the airfoil straight blade vertical axis wind turbine
    Kadhim H Suffer, Isam E Yousif, Zuradzman M Razlan
    Iop Conference Series Materials Science and Engineering, 2018
  • Numerical simulation of a new spoiler on upper surface of Clark Y14 wing
    Mohammed Kheiraldeen Abbas Askar, Amer Q Hameed, Kadhim H Suffer, Zuradzman M Razlan
    Iop Conference Series Materials Science and Engineering, 2018
  • Modeling and numerical simulation of a vertical axis wind turbine having cavity vanes
    Kadhim Suffer, Ryspek Usubamatov, Ghulam Quadir, Khairul Ismail
    Proceedings International Conference on Intelligent Systems Modelling and Simulation Isms, 2015
  • Numerical investigation of the aerodynamic performance for the newly designed cavity vane type vertical axis wind turbine
    K. H. Suffer, R. Usubamatov, G. A. Quadir, K. A. Ismail
    Aip Conference Proceedings, 2015
  • Modeling and numerical simulation for the newly designed four cavity blades vertical axis wind turbine
    Kadhim Suffer, Ryspek Usubamatov, Ghulam Abdul Quadir, Khairul Azwan Ismail
    Applied Mechanics and Materials, 2014
  • A storage domestic solar hot water system with a back layer of phase change material
    Abdul Jabbar N. Khalifa, Kadhim H. Suffer, Mahmoud Sh. Mahmoud
    Experimental Thermal and Fluid Science, 2013

RECENT SCHOLAR PUBLICATIONS

  • Numerical Investigation of Thermosyphon Heat Pipe Thermal Performance
    K Suffer
    Muthanna Journal of Engineering and Technology 14 (2) , 2026
    2026
  • Optical and Thermal Performance Enhancement of a Parabolic Trough Solar Collector With Helical Turbulators and Modified Receiver Geometries
    KH Suffer, AJ Obaid, MJ Al‐Dulaimi
    Heat Transfer , 2026
    2026
  • DEVELOPMENT OF A HIGH-SELECTIVITY BIOSENSOR FOR RAPID DETECTION OF COVID-19 USING ELECTRODE INTERDIGITATED (IDE) PROBE- TARGET HYBRIDIZATION
    FYH A Wesam Al-Mufti, Akram A. Khalaf, Kadhim H. Suffer
    Valeology: International Journal of Medical Anthropology and Bioethics 3 (3 … , 2025
    2025
  • Modeling of Shell and Various Tube Shapes with Annular Fins for Thermal Solar Energy Storage System
    HA Hasan, KH Suffer
    International Conference on Green Environmental Engineering and Technology … , 2024
    2024
    Citations: 2
  • Experimental Study on Aerodynamics Performance Improvement of the Straight Bladed Vertical Axis Wind Turbine by Using Wind Concentrators
    HFA Kadhim H. Suffer
    International Journal of Engineering and Artificial Intelligence 5 (3), 35-46 , 2024
    2024
  • Experimental Study on the Effect of Cavity Blades on the Performance of H-Type Darrius VAWT
    MA Kadhim H. Suffer
    International Journal of Natural and Human Science 5 (2), 27-34 , 2024
    2024
  • Numerical and Experimental Investigation of the Aerodynamic for the IceWind Blades VAWT
    KH Suffer, YAS Saleh
    International Journal of Scientific Research in Science, Engineering and … , 2024
    2024
    Citations: 2
  • Experimental Investigation of the Aerodynamic Performance for the Modified Cavity Blade of VAWT
    KH Suffer
    International Journal of Multidisciplinary Sciences and Advanced Technology … , 2024
    2024
  • Thermal performance enhancement of energy storage system using spiral-wired tube heat exchanger
    HA Hasan, KH Suffer
    Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 45 … , 2023
    2023
    Citations: 6
  • ENHANCING EFFICIENCY OF THE RULA BY INTERFERING WITH FUZZY LOGIC
    MK Albzeirat, OM Alkhawaldeh, KH Suffer
    J. Theor. Appl. Inf. Technol 100, 5193-5201 , 2022
    2022
    Citations: 1
  • Development of a Hierarchical Model of Criteria for Construction of Nuclear Power Plants in the light of Nuclear Accidents from the World War to the Ukrainian-Russian War
    KHS Malek Khalaf Albzeirat, Osama M. Alkhawaldeh, Nadhum H.Safir, Nazih A ...
    International Journal of Natural and Human Sciences 3 (1), 24-31 , 2022
    2022
  • Temperature Distribution Analysis of Lithium-Ion Polymer Battery Surface
    R Murali, ZM Razlan, SA Bakar, KH Suffer, Z Ibrahim, WK Wan, R MN, ...
    2022 9th International Conference on Electrical and Electronics Engineering … , 2022
    2022
    Citations: 2
  • Experimental Study of a Hybrid Darrius-Icewind Vertical Axis Wind Turbine
    ZSJ Kadhim H. Suffer
    International Journal of Engineering and Artificial Intelligence 2 (4), 1-6 , 2021
    2021
  • Experimental implementation of thermal enhancement performance of air heat exchanger’s pipes utilizing unconventional turbulator
    AA Ismaeel, NF Hussein, KH Suffer, ZM Razlan
    EUREKA: Physics and Engineering, 35-44 , 2021
    2021
    Citations: 1
  • Preparation of ZnO nanoparticles by 1064/532nm laser ablation and studying the Effect of the ablation Wavelength
    MS Majeed, RQ Nafil, MFA Jabbar, K Suffer
    Materials Science Forum 1021, 171-180 , 2021
    2021
    Citations: 5
  • A Vision Future for Application Artificial Intelligent in Solar Energy
    MK Albzeirat, KH Suffer, NN Zulkepli, AK Alkhawaldeh
    International Journal of Engineering and Artificial Intelligence 2 (1), 60-70 , 2021
    2021
    Citations: 1
  • Numerical investigation of the aerodynamics performance of Hybrid IceWind-Darrius Turbine
    KH Suffer, ZS Jabar
    Artificial Intelligence in Engineering 2 (3), 9-15 , 2021
    2021
    Citations: 2
  • Numerical Investigation of the Aerodynamics Performance of Hybrid Icewind-Darrius Turbine
    ZSJ Kadhim H. Suffer
    International Journal of Engineering and Artificial Intelligence 2 (3), 9-15 , 2021
    2021
  • Numerical Investigation for the Improving the Aerodynamic Characteristics of the Darrius VAWT
    KH Suffer, ZS Jabar
    International Journal of Multidisciplinary Sciences and Advanced Technology … , 2021
    2021
  • Constructal design of flat tubes cooled by natural convection
    ABF Ahmed Waheed Mustafa, Kadhim H. Suffer
    Heat Transfer 50, 2049-2063 , 2021
    2021
    Citations: 6

MOST CITED SCHOLAR PUBLICATIONS

  • A storage domestic solar hot water system with a back layer of phase change material
    AJN Khalifa, KH Suffer, MS Mahmoud
    Experimental Thermal and Fluid Science 44, 174-181 , 2013
    2013
    Citations: 173
  • Overview of Vertical Axis Wind Turbine (VAWT) is one of the Wind Energy Application
    MTM Farhan Ahmed Khammas, Kadhim Hussein Suffer, Ryspek Usubamatov
    Applied Mechanics and Materials 793, 388-392 , 2015
    2015
    Citations: 28
  • Modeling and numerical simulation of a vertical axis wind turbine having cavity vanes
    KH Suffer, R Usubamatov, GA Quadir, K Ismail
    2014 5th International Conference on Intelligent Systems, Modelling and … , 2014
    2014
    Citations: 24
  • Structure constant analyzing of SLG beam Kolmogorov in atmospheric slant path propagation
    HT Khamees, AHT Al-Ghrairi, KH Suffer, HH Thary
    AIP Conference Proceedings 2129, 020063 (2019); https://doi.org/10.1063/1 … , 2019
    2019
    Citations: 18
  • Numerical Investigation of PCM Thermal Storage in Water Solar Collector
    KH Suffer, JM Jalil, HA Hasan
    Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 66 (1 … , 2020
    2020
    Citations: 15
  • Modeling and Numerical Simulation for the Newly Designed Four Cavity Blades Vertical Axis Wind Turbine
    KH SUFFER, R USUBAMATOV, GA Quadir, KA Ismail
    Applied Mechanics and Materials 554, 536-540 , 2014
    2014
    Citations: 7
  • Thermal performance enhancement of energy storage system using spiral-wired tube heat exchanger
    HA Hasan, KH Suffer
    Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 45 … , 2023
    2023
    Citations: 6
  • Constructal design of flat tubes cooled by natural convection
    ABF Ahmed Waheed Mustafa, Kadhim H. Suffer
    Heat Transfer 50, 2049-2063 , 2021
    2021
    Citations: 6
  • Experimental and numerical investigation of heat transfer enhancement by using different geometry coiled tubes
    M Kalash, A Sami, KH Suffer, LJ Habeeb
    Journal of Mechanical Engineering Research and Developments 43 (4), 92-104 , 2020
    2020
    Citations: 6
  • CFD Analysis of Three and Four Blades Movable Vanes Type Vertical Axis Wind Turbine Having Movable Vanes
    KH Suffer, GA Quadir, KA Ismail, R U.
    International Journal of Smart Grid and Clean Energy, 5 (4), 259-263 , 2016
    2016
    Citations: 6
  • Experimental Study on Enhancement of Single-Basin Solar Still Using Dye Solutions
    KH Suffer .
    Engineering and Technology Journal 30 (18), 3112-3125 , 2012
    2012
    Citations: 6
  • Preparation of ZnO nanoparticles by 1064/532nm laser ablation and studying the Effect of the ablation Wavelength
    MS Majeed, RQ Nafil, MFA Jabbar, K Suffer
    Materials Science Forum 1021, 171-180 , 2021
    2021
    Citations: 5
  • Modeling of the aerodynamics of the integrated four blades (VAWT) having movable vanes
    KH Suffer, AK Hussain, S Hussain
    AIP Conference Proceedings 2213 (1), 020133 , 2020
    2020
    Citations: 5
  • Numerical simulation of a new spoiler on upper surface of Clark Y14 wing
    MK Abbas Askar, AQ Hameed, KH Suffer, ZM Razlan
    IOP Conference Series: Materials Science and Engineering 429 (1), 012080 , 2018
    2018
    Citations: 4
  • Numerical Simulation for the Aerodynamics of Vertical Axis Wind Turbine with Two Different Rotors Having Movable Vanes
    KH SUffer, Q G.A., F A. K., IKA RYSPEK U.
    Applied Mechanics and Materials 786, 205-209 , 2015
    2015
    Citations: 3
  • Modeling of Shell and Various Tube Shapes with Annular Fins for Thermal Solar Energy Storage System
    HA Hasan, KH Suffer
    International Conference on Green Environmental Engineering and Technology … , 2024
    2024
    Citations: 2
  • Numerical and Experimental Investigation of the Aerodynamic for the IceWind Blades VAWT
    KH Suffer, YAS Saleh
    International Journal of Scientific Research in Science, Engineering and … , 2024
    2024
    Citations: 2
  • Temperature Distribution Analysis of Lithium-Ion Polymer Battery Surface
    R Murali, ZM Razlan, SA Bakar, KH Suffer, Z Ibrahim, WK Wan, R MN, ...
    2022 9th International Conference on Electrical and Electronics Engineering … , 2022
    2022
    Citations: 2
  • Numerical investigation of the aerodynamics performance of Hybrid IceWind-Darrius Turbine
    KH Suffer, ZS Jabar
    Artificial Intelligence in Engineering 2 (3), 9-15 , 2021
    2021
    Citations: 2
  • Induction Motor Rotor: Energy Efficiency Improvement On Economic And Environment
    MK Rahmat, YB Yahya, KH Suffer
    AIP Conference Proceedings; https://doi.org/10.1063/1.5118060 2129 (1), 020052-7 , 2019
    2019
    Citations: 2