EFFECTS OF HEATER DIMENSIONS ON NANOFLUID NATURAL CONVECTION IN A HEATED INCINERATOR SHAPED CAVITY CONTAINING A HEATED BLOCK

Year 2018, Volume: 4 Issue: 3, 2018 - 2036, 22.03.2018

Mohamed Ammar Abbassi

https://doi.org/10.18186/journal-of-thermal-engineering.411434

Cited By: 12

Abstract

The present work reports a numerical study of natural
convection in an incinerator shaped enclosure with a localized heated source
situated at the bottom. Lattice Boltzmann Method (LBM) is used to simulate
nanofluid (water-Al₂O₃) flow and heat transfer.
Simulations have been carried out for the pertinent parameters: Rayleigh number
(Ra=10³−10⁶), solid volume fraction



















   relative heat source high (

), relative heat source width (

), and inclination angle of the
incinerator (

). The comparison of the obtained
results is in excellent agreement with results from literature. It may be noted
that the Rayleigh number, the solid volume fraction, the heat source tallness
enhances the heat transfer and influences the flow pattern and the thermal
structures. However for the relative heat source width plays opposite role for
values superior to 0.4.

Keywords

Heat Transfer, Incinerator Geometry, Lattice Boltzmann Method, Natural Convection, Nanofluid

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