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A Study On Heat And Mass Transfer Of Power-Law Nanofluids In A Fractal Porous Medium With Complex Evaporating Surface

Author

Listed:
  • SHUAI LIU

    (School of Aeronautics and Astronautics, Sun Yat-Sen University, Shenzhen, 518107, P. R. China)

  • QINGYONG ZHU

    (School of Aeronautics and Astronautics, Sun Yat-Sen University, Shenzhen, 518107, P. R. China)

Abstract

In this paper, a convection and heat transfer problem of power-law fluid in a three-dimensional porous media with complex evaporating surface is studied. The Buoyancy-Marangoni convection for non-Newtonian power-law fluids in porous media is solved using a compact high-order finite volume method. For this model, the left wall is kept at high temperature and high concentration, the right wall is affected by lower temperature and lower concentration, the upper wall is a complex evaporating surface. The Weierstrass–Mandelbrot function is used to approximate the shape of the evaporation interface, the analytical solution of its fractal dimension can be obtained by the pore area fractal dimension, and the volume percentage of liquid. The fluid in the porous cavity is a power-law fluid containing copper oxide nanoparticles. The solid material of the porous medium is aluminum foam. Numerical simulations can be used to determine Marangoni number, Rayleigh number and the pore area fractal dimension on the flow, heat transfer, and mass transfer rate.

Suggested Citation

  • Shuai Liu & Qingyong Zhu, 2021. "A Study On Heat And Mass Transfer Of Power-Law Nanofluids In A Fractal Porous Medium With Complex Evaporating Surface," FRACTALS (fractals), World Scientific Publishing Co. Pte. Ltd., vol. 29(07), pages 1-23, November.
    • Handle: RePEc:wsi:fracta:v:29:y:2021:i:07:n:s0218348x2150211x
    DOI: 10.1142/S0218348X2150211X
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