Slimane NIOU

@ensti-annaba.dz

LTSE, Energy Systems Technology Laboratory,
National Higher School of Technology and Engineering BP 12, 23052 ANNABA, ALGERIA

Slimane NIOU


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https://researchid.co/slimane_niou

RESEARCH, TEACHING, or OTHER INTERESTS

Mechanical Engineering, Energy, Engineering, Materials Science
7

Scopus Publications

37

Scholar Citations

3

Scholar h-index

1

Scholar i10-index

Scopus Publications

  • Evaluating turbulence models for accurate thermo-fluid simulation in STHE with combined tube bundles
    Sara Sahrane, Slimane Niou
    Turkish Journal of Engineering, 2025
    Shell and tube heat exchangers are widely used for their thermal efficiency, and their performance is heavily influenced by the turbulence regime, which is primarily turbulent due to the complex geometry involved. This study evaluates the impact of three turbulence models—k-ε, k-ω, and realizable k-ε—on shell and tube heat exchangers with circular, 90° elliptical, and combined tube configurations, including line-line, random, and elliptical 90°-circular combinations. Using COMSOL Multiphysics software, we simulate thermofluidic flows and compare the results for each turbulence model and tube geometry. The results show that the k-ω model is the most effective for simple geometries, providing reliable and consistent outcomes, while the realizable k-ε model exhibits the lowest pressure drop, making it particularly suitable for configurations with varying mass flow rates and more complex geometries. The choice of different tube bundle combinations can significantly impact the overall thermal and hydraulic performance of the heat exchanger. For combined configurations, the k-ε model provides the best heat transfer performance, particularly in the STHE-E90°_C combination, where the strategic placement of circular tubes in the center and near the shell has a significant effect on optimizing both heat transfer efficiency and pressure losses. This study offers valuable insights for optimizing the design and performance of shell and tube heat exchangers, ultimately contributing to more efficient thermal systems.
  • Advanced design and thermal-hydraulic performance improvement of shell-and-tube heat exchangers with twisted and combined tube bundles
    Sara SAHRANE, Slimane NIOU, Abdelkabir ZAITE, Marwa BEDJAOUI
    Journal of Thermal Science and Technology, 2025
    This study investigates the thermo-hydraulic performance of shell-and-tube heat exchangers with advanced combined and twisted tube bundle configurations. Numerical simulations were conducted using COMSOL Multiphysics. employing a k-ε turbulence model to analyze heat transfer and fluid flow at various mass flow rates. The numerical results were validated against experimental data from the literature, confirming the accuracy of the model. The twisted configuration, featuring elliptical tubes on the periphery and circular tubes at the core with a 45° twist angle, demonstrated enhanced performance by intensifying turbulence and promoting secondary flow structures. This design achieved an improvement of 12.68% to 16.59% in the overall heat transfer coefficient compared to conventional circular tube bundles, outperforming both smooth combined tube designs and configurations proposed by Saffarian et al. (2019). Although this twisted design resulted in a 31.40% increase in pressure drop compared to the smooth combined configuration, it still maintained a 22.08% lower pressure drop relative to the Saffarian et al. setup, indicating a favorable balance between thermal performance and hydraulic penalties. The STHE_TC configuration exhibited significant heat transfer enhancement by increasing fluid residence time and convection, while the STHE_SC configuration provided a balanced compromise between thermal and hydraulic efficiency. Both designs have the potential to reduce heat exchanger size while maintaining equivalent thermal capacities, promoting compactness and lowering installation costs. This work underscores the promise of combined and twisted tube bundles as compact energy-efficient solutions for industrial applications and paves the way for future exploration of advanced geometries and materials in thermal system optimization.
  • CFD Investigation of Shell and Tube Heat Exchanger: Impact of Various Tube Bundle Combinations on Heat Transfer Coefficient and Pressure Drop
    Sara SAHRANE, Slimane NIOU
    Eurasia Proceedings of Science Technology Engineering and Mathematics, 2023
    Shell and tube heat exchangers play a crucial role in various industries, including chemical processing, oil and gas, power generation, and HVAC systems. These exchangers are widely used for transferring heat between two fluids while maintaining their separation. The design of a shell and tube heat exchanger consists of a bundle of tubes enclosed within a larger shell. The hot fluid flows through the tubes, while the cold fluid circulates around them in the shell, facilitating efficient heat transfer and pressure drop of the system. The performance of a shell and tube heat exchanger is influenced by various factors, including the configuration of the tube bundle. The choice of different tube bundle combinations can significantly impact the overall performance of the heat exchanger. In this paper, a numerical study is conducted to examine the effects of two combination of circular and square tube bundle with the simple arrangement: i) circular, ii) square, on a shell and tube heat exchanger. COMSOL Multiphysics is employed to model and simulate this heat exchanger under various mass flow rates. The result shown that the combined geometry heat exchanger exhibits the highest overall heat transfer coefficient compared to heat exchangers with single arrangements. The pressure drop on the tube and shell side was also studied for all cases of heat exchangers. The placement of circular tubes in the center and near the shell has a significant effect on heat transfer and pressure losses. It has been demonstrated that the tubes located at the ends of the shell have a much greater impact on heat transfer compared to the tubes positioned in the center.
  • Digital Analysis of Common Turbulence Patterns in Centrifugal Pump Flow Simulation Based on COMSOL Multiphysics Software
    Slimane Niou, Abdessalam Otmani, Azzeddine Dekhane, Salaheddine Azzouz
    International Journal of Heat and Technology, 2022
    The present paper tackles the convergence and performance of three numerical turbulence models in the flow simulation. The benchmark analysis was performed using the COMSOL Multiphysics code, and the turbulence on a centrifugal water pump was generated numerically using the k−ε,k−ω, and k−ω SST models. However, the geometry was conducted on SolidWorks due to its complexity. First, the flow modeling was driven by solving the stationary Navier-Stokes equations. Then, the effects of the tested models, on the numerical CFD simulation, were examined. The analyzed results demonstrated that the best calculation precision was obtained using the k−ω model, whereas the lowest was provided by the k−ω SST model. A remarkable pumping performance was also recorded.
  • Numerical Study of a Shell and Tubes Heat Exchanger: Impact of the Geometrical Change of the Tube Section on the Overall Exchange Coefficient and the Pressure Drop
    Sara SAHRANE, Slimane NIOU, Abdassalam OTMANI, Salah-eddine AZZOUZ
    Eurasia Proceedings of Science Technology Engineering and Mathematics, 2022
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  • Cfd investigation on three turbulence models for centrifugal pump application
    Abdessalam OTMANI, Slimane NIOU, Sahrane SARA, Azzeddine DEKHANE, Salaheddine AZZOUZ
    Eurasia Proceedings of Science Technology Engineering and Mathematics, 2022
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  • A method for mechanical property assessment across butt fusion welded polyethylene pipes
    Slimane Niou, Kamel Chaoui, Salaheddine Azzouz, Nacira Hamlaoui, Latifa Alimi
    International Journal of Advanced Manufacturing Technology, 2018

RECENT SCHOLAR PUBLICATIONS

  • Evaluating turbulence models for accurate thermo-fluid simulation in sthe with combined tube bundles
    SN Sara Sahrane
    Turkish Journal of Engineering 9 (Issue: 2), 258 - 271 , 2025
    2025.0
    Citations: 3
  • Advanced design and thermal-hydraulic performance improvement of shell-and-tube heat exchangers with twisted and combined tube bundles
    S Sahrane, S Niou, A Zaite, M Bedjaoui
    Journal of Thermal Science and Technology 20 (2), 25-00118-25-00118 , 2025
    2025.0
    Citations: 1
  • CFD investigation of shell and tube heat exchanger: Impact of various tube bundle combinations on heat transfer coefficient and pressure drop
    S Sahrane, S Nıou
    The Eurasia Proceedings of Science, Technology, Engineering and Mathematics … , 2023
    2023.0
    Citations: 4
  • Detecting Mixed Gear Faults Using Scalar and Cyclostationary Indicators in an Industrial Settin
    K Tarek, N Slımane, A Mrabtı
    The Eurasia Proceedings of Science Technology Engineering and Mathematics 26 … , 2023
    2023.0
  • Journal International Sciences et Technique de l’Eau et de l’Environnement
    N Nedjah, S Niou, N Boudinar, NEH Arabi
    2023.0
  • Numerical study of a shell and tubes heat exchanger: impact of the geometrical change of the tube section on the overall exchange coefficient and the pressure drop
    S Sahrane, S Nıou, A Otmanı, S Azzouz
    The Eurasia Proceedings of Science Technology Engineering and Mathematics 21 … , 2022
    2022.0
    Citations: 3
  • CFD investigation on three turbulence models for centrifugal pump application
    A Otmanı, S Nıou, S Sara, A Dekhane, S Azzouz
    The Eurasia Proceedings of Science Technology Engineering and Mathematics 21 … , 2022
    2022.0
    Citations: 1
  • Digital analysis of common turbulence patterns in centrifugal pump flow simulation based on COMSOL multiphysics software
    S Niou, A Otmani, A Dekhane, S Azzouz
    International Journal of Heat and Technology 40 (3), 855-862 , 2022
    2022.0
    Citations: 5
  • Study of the residual deformations in a polyethylene pipe.
    S BOUCHAKHCHOUKHA, N DAOUDI, L ALIMI, S NIOU, AM MERABTINE
    International Conference on Mechanical Sciences 12, 13 , 2021
    2021.0
  • A method for mechanical property assessment across butt fusion welded polyethylene pipes
    S Niou, K Chaoui, S Azzouz, N Hamlaoui, L Alimi
    The International Journal of Advanced Manufacturing Technology 97 (1), 543-561 , 2018
    2018.0
    Citations: 19
  • Développement d’une méthode pour caractériser la résistance mécanique circonférentielle d’un joint de tube plastique soudé bout-à-bout, 10èmes Journées de Mécanique (JM’10, EMP)
    S Niou, S Azzouz, K Chaoui, Z Azari
    Ecole Militaire Polytechnique, 12-13 , 2016
    2016.0
    Citations: 1
  • ETUDE THERMIQUE DU SOUDAGE BOUT A BOUT DES TUBES EN POLYETHYLENE A HAUTE DENSITE
    S NIOU, S AZZOUZ, K CHAOUI

MOST CITED SCHOLAR PUBLICATIONS

  • A method for mechanical property assessment across butt fusion welded polyethylene pipes
    S Niou, K Chaoui, S Azzouz, N Hamlaoui, L Alimi
    The International Journal of Advanced Manufacturing Technology 97 (1), 543-561 , 2018
    2018.0
    Citations: 19
  • Digital analysis of common turbulence patterns in centrifugal pump flow simulation based on COMSOL multiphysics software
    S Niou, A Otmani, A Dekhane, S Azzouz
    International Journal of Heat and Technology 40 (3), 855-862 , 2022
    2022.0
    Citations: 5
  • CFD investigation of shell and tube heat exchanger: Impact of various tube bundle combinations on heat transfer coefficient and pressure drop
    S Sahrane, S Nıou
    The Eurasia Proceedings of Science, Technology, Engineering and Mathematics … , 2023
    2023.0
    Citations: 4
  • Evaluating turbulence models for accurate thermo-fluid simulation in sthe with combined tube bundles
    SN Sara Sahrane
    Turkish Journal of Engineering 9 (Issue: 2), 258 - 271 , 2025
    2025.0
    Citations: 3
  • Numerical study of a shell and tubes heat exchanger: impact of the geometrical change of the tube section on the overall exchange coefficient and the pressure drop
    S Sahrane, S Nıou, A Otmanı, S Azzouz
    The Eurasia Proceedings of Science Technology Engineering and Mathematics 21 … , 2022
    2022.0
    Citations: 3
  • Advanced design and thermal-hydraulic performance improvement of shell-and-tube heat exchangers with twisted and combined tube bundles
    S Sahrane, S Niou, A Zaite, M Bedjaoui
    Journal of Thermal Science and Technology 20 (2), 25-00118-25-00118 , 2025
    2025.0
    Citations: 1
  • CFD investigation on three turbulence models for centrifugal pump application
    A Otmanı, S Nıou, S Sara, A Dekhane, S Azzouz
    The Eurasia Proceedings of Science Technology Engineering and Mathematics 21 … , 2022
    2022.0
    Citations: 1
  • Développement d’une méthode pour caractériser la résistance mécanique circonférentielle d’un joint de tube plastique soudé bout-à-bout, 10èmes Journées de Mécanique (JM’10, EMP)
    S Niou, S Azzouz, K Chaoui, Z Azari
    Ecole Militaire Polytechnique, 12-13 , 2016
    2016.0
    Citations: 1
  • Detecting Mixed Gear Faults Using Scalar and Cyclostationary Indicators in an Industrial Settin
    K Tarek, N Slımane, A Mrabtı
    The Eurasia Proceedings of Science Technology Engineering and Mathematics 26 … , 2023
    2023.0
  • Journal International Sciences et Technique de l’Eau et de l’Environnement
    N Nedjah, S Niou, N Boudinar, NEH Arabi
    2023.0
  • Study of the residual deformations in a polyethylene pipe.
    S BOUCHAKHCHOUKHA, N DAOUDI, L ALIMI, S NIOU, AM MERABTINE
    International Conference on Mechanical Sciences 12, 13 , 2021
    2021.0
  • ETUDE THERMIQUE DU SOUDAGE BOUT A BOUT DES TUBES EN POLYETHYLENE A HAUTE DENSITE
    S NIOU, S AZZOUZ, K CHAOUI