Numerical simulation of turbulent flow around a rectangular prism located symmetrically in a channel

 

R. Saim1*, S. Abboudi 2, B. Benyoucef 1

1 Unité de Recherche Matériaux et Energies Renouvelables (URMER),

Université Abou Bekr Belkaid, B.P 119- Tlemcen 13000,  Algérie

2 Laboratoire Systèmes et Transports (SET), UTBM, Site de Sévenans- 90010 – France

* Corresponding author. Email: saimrachid@mail.univ-tlemcen.dz

Received: 09 September 2007; revised version accepted:15 March 2008

 

Abstract

     A numerical analysis was carried out to study the performance of turbulent forced convection flow in a two-dimensional horizontal plane channel containing two rectangular prisms mounted on the channel axis in tandem arrangement. The standard two-equation k-e model, associated with wall function, is used to describe the turbulent flow. The numerical study is performed by the finite volume method with power–law scheme based on the SIMPLE algorithm. The validity of the numerical code is assumed by comparing, for the same conditions, our results with those of Alvarez, J et al [16].

     The effects of the dimensionless height of blocks, the dimensionless distance between the blocks Pi, on the flow structure and heat transfer characteristics, were investigated for various Reynolds numbers Re (105 <Re<5. 105) and three width-to-height ratio A/B of the prism (A/B=0.5, 0.75 and 1).

     Special emphasis is given in the systematic analysis to detail the effect of the Reynolds number (ReDh).

 

Keywords: Numerical simulation; SIMPLE; turbulent flow; forced convection; obstacle; rectangular channel.


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