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Application of lattice Boltzmann method to curved boundaries for simulating nanofluid flow in an L-Shape enclosure by Shayan Naseri Nia; Faranak Rabiei; M.M. Rashidi is a Engineering article available to read on EtoBox.

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## Purpose This paper aims to use the Lattice Boltzmann method (LBM) to numerically simulate the natural convection heat transfer of Cu-water nanofluid in an L-shaped enclosure with curved boundaries. ## Design/methodology/approach LBM on three different models of curved L-shape cavity using staircase approach is applied to perform a comparative investigation for the effects of curved boundary on fluid flow and heat transfer. The staircase approximation is a straightforward and efficient approach to simulating curved boundaries in LBM. ## Findings The effect of curved boundary on natural convection in different parameter ranges of Rayleigh number and nanoparticle volume fraction is investigated. The curved L-shape results are also compared to the rectangular L-shape results that were also achieved in this study. The curved boundary LBM simulation is also validated with existing studies, which shows great accuracy in this study. The results show that the top curved boundary in curved L-shape models causes a notable increase in the Nusselt number values. ## Originality/value Based on existing literature, there is a lack of comparative studies which would specifically examine the effe

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Author

Shayan Naseri Nia; Faranak Rabiei; M.M. Rashidi

Publisher

Emerald

Published

2021

Language

EN

Field

Engineering (Physical Sciences)