Simulation of forced convection in a channel with nanofluid by the lattice Boltzmann method

Abstract

This paper presents a numerical study of the thermal performance of fins mounted on the bottom wall of a horizontal channel and cooled with either pure water or an Al2O3-water nanofluid. The bottom wall of the channel is heated at a constant temperature and cooled by mixed convection of laminar flow at a relatively low temperature. The results of the numerical simulation indicate that the heat transfer rate of fins is significantly affected by the Reynolds number (Re) and the thermal conductivity of the fins. The influence of the solid volume fraction on the increase of heat transfer is more noticeable at higher values of the Re.

Recent progress on lattice Boltzmann simulation of nanofluids: A review

“…Sheikholeslami and Ganji [92], Sheikholeslami et al [93][94][95][96][97], Darzi et al [98], Ashorynejad [99] and Mehrizi et al [100] focused on the heat transfer and vortex structure analysis in differentially heated outer and inner cylinders. Other complicated geometries such as arc-shape of enclosure [101], L-shaped enclosure [102], expansion pipe [103], channel with ribs [104], channel with cavity [105], enclosure with wavy wall [106], enclosure with protruding [107] and many more [108][109][110][111] have been considered according to their engineering applications of interest.…”

Effect of Obstacle Presence for Heat Transfer in Porous Channel

“…The solid walls are assumed to be no slip, for this reason the bounce-back scheme is applied. For example in the north boundary the following conditions are used [13]. …”

Mixed Convection Heat Transfer of Al2O3 Nanofluid on the Elliptical Shapes: Numerical Study of Irreversibility

“…Employing nanofluid for the purpose of increasing the heat transfer in thermal systems is an alternative technique which draws serious attention. The thermal performance of different types of nanofluid has been the subject of many recent studies on forced, natural, and mixed convection problems (Chol 1995, Sidik, Khakbaz et al 2013. Sarkar et al (2012) studied the buoyancy driven mixed convective flow and heat transfer characteristics of the water-based copper nanofluid past a circular cylinder.…”