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

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Özsaban M., Aslan E. , Güven H. R.

Sakarya University Journal Of Science, cilt.24, sa.1, ss.10-19, 2020 (Hakemli Üniversite Dergisi)

  • Cilt numarası: 24 Konu: 1
  • Basım Tarihi: 2020
  • Dergi Adı: Sakarya University Journal Of Science
  • Sayfa Sayıları: ss.10-19

Özet

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 twodimensional 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.