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Lattice Boltzmann simulation of nanofluid natural convection heat transfer in a channel with a sinusoidal obstacle

Author

Listed:
  • Monireh Asadi Abchouyeh

    (School of Mathematics and Computer Science, Damghan University, Damghan, Iran)

  • Rasul Mohebbi

    (#x2020;School of Engineering, Damghan University, P. O. Box)

  • Omid Solaymani Fard

    (School of Mathematics and Computer Science, Damghan University, Damghan, Iran)

Abstract

The aim of this work is to conduct numerical study of fluid flow and natural convection heat transfer by utilizing the nanofluid in a two-dimensional horizontal channel consisting of a sinusoidal obstacle by lattice Boltzmann method (LBM). The fluid in the channel is a water-based nanofluid containing Cuo nanoparticles. Thermal conductivity and nanofluid’s viscosity are calculated by Patel and Brinkman models, respectively. A wide range of parameters such as the Reynolds number (Re=100–400) and the solid volume fraction ranging (Φ=0–0.05) at different non-dimensional amplitude of the wavy wall of the sinusoidal obstacle (A=0–20) on the streamlines and temperature contours are investigated in the present study. In addition, the local and average Nusselt numbers are illustrated on lower wall of the channel. The sensitivity to the resolution and representation of the sinusoidal obstacle’s shape on flow field and heat transfer by LBM simulations are the main interest and innovation of this study. The results showed that increasing the solid volume fraction Φ and Reynolds number Re leads to increase the average Nusselt numbers. The maximum average Nusselt number occurs when the Reynolds number and solid volume fraction are maximum and amplitude of the wavy wall is minimum. Also, by decreasing the A, the vortex shedding forms up at higher Reynolds number in the wake region downstream of the obstacle.

Suggested Citation

  • Monireh Asadi Abchouyeh & Rasul Mohebbi & Omid Solaymani Fard, 2018. "Lattice Boltzmann simulation of nanofluid natural convection heat transfer in a channel with a sinusoidal obstacle," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 29(09), pages 1-20, September.
    • Handle: RePEc:wsi:ijmpcx:v:29:y:2018:i:09:n:s0129183118500791
    DOI: 10.1142/S0129183118500791
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    Cited by:

    1. Mohebbi, Rasul & lakzayi, Hassan & Rasam, Hamed, 2020. "Numerical simulation of conjugate heat transfer in a square cavity consisting the conducting partitions by utilizing lattice Boltzmann method," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 546(C).
    2. Mohebbi, Rasul & Delouei, Amin Amiri & Jamali, Amin & Izadi, Mohsen & Mohamad, Abdulmajeed A., 2019. "Pore-scale simulation of non-Newtonian power-law fluid flow and forced convection in partially porous media: Thermal lattice Boltzmann method," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 525(C), pages 642-656.

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