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Numerical Study of the Fluid-Structure Interaction During CNT-Water Nanofluid Mixed Convection in a Micro-Channel Equipped with Elastic Fins Under Periodic Inlet Velocity Conditions

  • S.I.: Computations & Experiments on Dynamics of Complex Fluid & Structure
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Abstract

The present paper presents a numerical investigation treating the fluid-structure interaction during CNT-water nanofluid mixed convection in a micro-channel equipped with elastic fins. A numerical framework for simulating the fluid–structure interaction is proposed by using the Finite Element Method (FEM) in COMSOL Multiphysics. To prepare the numerical model, the micro-channel boundaries are considered as rigid, and the fins are elastic. Under periodic fully developed inlet boundary condition the effects of CNT volume fraction and the average inlet velocity on the flow structure, temperature field, heat transfer, drag and lift coefficients are studied. Results highlight the major effect of the fin oscillations to reduce the lift and drag forces and to improve the heat transfer and cooling the outlet flow from the cylindrical micro-channel. The dispersion of CNT nanoparticles in water-based fluid enhances considerably the convection process. In fact, it is remarked that due to the high thermal conductivity of CNT-water nanofluid the Nusselt number increases for higher CNT concentration especially for higher inlet velocities.

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Acknowledgments

This research has been funded by Scientific Research Deanship at University of Ha’il – Saudi Arabia through project number RG-20 084.

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Authors and Affiliations

  1. Mechanical Engineering Department, College of Engineering, Ha’il University, Ha’il, Saudi Arabia

    L. Ben Said, L. Kolsi, N. Ben Khedher & F. Alshammari

  2. Laboratory of Electro-Mechanical Systems (LASEM), National Engineering School of Sfax, University of Sfax, 3038, Sfax, Tunisia

    L. Ben Said

  3. Laboratory of metrology and energy systems, National engineering school, Monastir, University of Monastir, Monastir, Tunisia

    L. Kolsi

  4. Laboratory of Thermal and Energetic Systems Studies at the National School of Engineering of Monastir, University of Monastir, Tunisia, Tunisia

    N. Ben Khedher

  5. Department of Power Engineering and Turbomachinery, Silesian University of Technology, 44-100, Gliwice, Poland

    E.H. Malekshah

  6. College of Engineering-Mechanical Engineering Department, University of Babylon, Babylon City, Hilla, Iraq

    A.K. Hussein

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  1. L. Ben Said
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Correspondence to L. Kolsi.

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Ben Said, L., Kolsi, L., Ben Khedher, N. et al. Numerical Study of the Fluid-Structure Interaction During CNT-Water Nanofluid Mixed Convection in a Micro-Channel Equipped with Elastic Fins Under Periodic Inlet Velocity Conditions. Exp Tech 47, 7–15 (2023). https://doi.org/10.1007/s40799-021-00527-4

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  • DOI: https://doi.org/10.1007/s40799-021-00527-4

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