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In this paper, a numerical study was carried out to compare three geometries to analyze two-dimensional convective heat transfer. The walls are heated by a continuous thermal flow with incoming flows of Reynolds number. The simulations are based on the finite volume method and the problem is considered in turbulent. Different mono and hybrid nanofluids and their combinations with different volumes of nanoparticle fractions were used in this work. The simulations provide insights into temperature distribution, velocity profiles and flow patterns, contributing to an in-depth understanding of the underlying mechanisms. The simulation results show that as the Reynolds number increases, the Nusselt number increases, indicating an improvement in heat transfer. the geometry of case 3 illustrates a significant improvement in heat transfer. It is observed that all the hybrid nanofluids outperform the Al2O3 nanofluid with a volume fraction of 4%. The hybrid nanofluid Al2O3(2%)-CuO (4%) presents the best efficiency in the results obtained in this study. The use of hybrid nanofluids, with their characteristics such as, high thermal conductivity and altered rheological properties, promises to improve thermal performance.

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Comparative Study of Heat Transfer Enhancement of Al2O3-CuO/Water Hybrid Nanofluids of Different Channel Geometries

  • 会议论文

  • 发表日期：

    2025年

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  • Fatima-Zahra Barhdadi,
  • Ikrame Jamal,
  • Kamal Amghar,
  • Salah Daoudi,
  • Kamal Ghoumid,
  • Dris Bahia

摘要

In this paper, a numerical study was carried out to compare three geometries to analyze two-dimensional convective heat transfer. The walls are heated by a continuous thermal flow with incoming flows of Reynolds number. The simulations are based on the finite volume method and the problem is considered in turbulent. Different mono and hybrid nanofluids and their combinations with different volumes of nanoparticle fractions were used in this work. The simulations provide insights into temperature distribution, velocity profiles and flow patterns, contributing to an in-depth understanding of the underlying mechanisms. The simulation results show that as the Reynolds number increases, the Nusselt number increases, indicating an improvement in heat transfer. the geometry of case 3 illustrates a significant improvement in heat transfer. It is observed that all the hybrid nanofluids outperform the Al2O3 nanofluid with a volume fraction of 4%. The hybrid nanofluid Al2O3(2%)-CuO (4%) presents the best efficiency in the results obtained in this study. The use of hybrid nanofluids, with their characteristics such as, high thermal conductivity and altered rheological properties, promises to improve thermal performance.