Numerical Investigation of Incompressible Forced Convection in a Channel with a Rectangular Prism

Year 2020, Volume: 24 Issue: 1, 10 - 18, 01.02.2020

Mert Özsaban , Erman Aslan , Hasan Rıza Güven

https://doi.org/10.16984/saufenbilder.551492

Cited By: 1

Abstract

The aim of
the present study is to investigate the effects of the rectangular prism on
forced convection in a channel with the Lattice Boltzmann Method (LBM). In this
context, numerical analysis of steady and unsteady incompressible flow and heat
transfer has been done in a two-dimensional straight parallel channel. Momentum
and energy transport are modelled with LBM. This study is used as a single
relaxation time rule with a uniform square lattice structure. Different
Reynolds numbers (50 and 1000) and constant Prandtl number value (0.7) have
been investigated. In this study Nusselt number has been calculated for channel
flow with rectangular prism and it was compared with an empty channel.
Streamlines and isotherms were presented for the above-mentioned cases. LBM
results were validated by commercial CFD code with the same conditions. It is
found from results that Nusselt number with a rectangular prism in a channel
was increased and the flow goes to transient form at Re=1000. Also, LBM code
results are similar accuracy with commercial CFD code.

Keywords

Lattice Boltzmann Method, Nusselt number, incompressible forced convection, rectangular prism

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