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Heat transfer hybrid nanofluid (1-Butanol/MoS2–Fe3O4) through a wavy porous cavity and its optimization

Hosseinzadeh, K ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1108/HFF-07-2020-0442
  3. Publisher: Emerald Group Holdings Ltd , 2020
  4. Abstract:
  5. Purpose: The purpose of this paper is to investigate natural convection in a porous wavy-walled enclosure that is including a cylinder cavity in the middle of it and filled with a hybrid nanofluid contains 1-Butanol as the base fluid and MoS2–Fe3O4 hybrid nanoparticles. Design/methodology/approach: The domain of interest is bounded by constant temperature horizontal corrugated surfaces and isothermal vertical flat surfaces. The numerical outputs are explained in the type of isotherms, streamline and average Nusselt number with variations of the Rayleigh number, Hartmann number, nanoparticle shape factor and porosity of the porous medium. For solving the governing equations, the finite element method has been used. Findings: The results show that Nuave is proportional to Rayleigh and nanoparticle shape factor directly as well as it has an inverse relation with Hartmann and porosity. The obtained results reveal that the shape factor parameter has a significant effect on the heat transfer performance, which shows a 55.44% contribution on the average Nusselt number. Originality/value: As a novelty, to maximize the heat transfer performance in a corrugated walls enclosure, the optimal parameters have intended by using the response surface and Taguchi methods. Additionally, an accurate correlation for the average Nusselt number is developed with sensibly great precision. © 2020, Emerald Publishing Limited
  6. Keywords:
  7. 1-Butanol ; Finite element method ; Hybrid nanoparticle ; Porous enclosure ; RSM ; Taguchi method ; Enclosures ; Inverse problems ; Iron oxides ; Isotherms ; Layered semiconductors ; Magnetite ; Molybdenum compounds ; Nanofluidics ; Nanoparticles ; Nusselt number ; Porosity ; Porous materials ; Taguchi methods ; Constant temperature ; Corrugated surfaces ; Design/methodology/approach ; Governing equations ; Inverse relations ; Nanoparticle shape ; Optimal parameter ; Heat transfer performance
  8. Source: International Journal of Numerical Methods for Heat and Fluid Flow ; 2020
  9. URL: https://www.emerald.com/insight/content/doi/10.1108/HFF-07-2020-0442/full/html