Numerical study of turbulent heat transfer in a horizontal channel provided with square blocks: effect of the inter blocks spacing

Amghar, Kamal; Filali, Abdelkader; Louhibi, Mohamed Ali; Bouali, Hicham; Salhi, Najim; Salhi, Merzouki

doi:10.18186/thermal.890073

Numerical study of turbulent heat transfer in a horizontal channel provided with square blocks: effect of the inter blocks spacing

Kamal Amghar ¹

, Abdelkader Filali ²

, Mohamed Ali Louhibi ¹ , Hicham Bouali ³ , Najim Salhi ¹ , Merzouki Salhi ¹

¹Laboratory of Mechanics and Energy, Mohammed 1st University, Oujda, Morocco
²ENPC, National Polytechnic University of Constantine, Constantine, Algeria
³Laboratory of Renewable Energy, Embedded System and Information Processing, National school of Applied Science, Morocco

J Ther Eng 2021; 7(3): 650-665 DOI: 10.18186/thermal.890073

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Abstract

In the present paper, numerical simulation is carried out to investigate turbulent flow structure and heat transfer analysis in a two-dimensional horizontal plane channel, contains square blocks arranged in tandem or side by side arrangement. The k-ε model is used to describe turbulence phenomena, and governing equations are solved by a finite volume method, with SIMPLEC algorithm is applied for the coupling of the velocity-pressure variables. The power-law scheme is used for the discretization of the convective terms in the momentum equations. Presented results illustrates the effect of the transverse (GT) and longitudinal (GL) spacing between the blocks on flow structure and heat transfer for a wide range of Reynolds number (104≤ Re ≤5×104). Numerical results show a very good agreement in comparison with available data in the literature.

Keywords: Turbulent Flow, Heat Transfer, Numerical Solution, Square Blocks, Blocks Spacing, Channel, Finite Volume Method