Application of Extended Eddy-viscosity and Elliptic-Relaxation Approaches to Turbulent Convective Flow in a Partially Divided Cavity

Gunarjo Suryanto Budi; Sasa Kenjeres

doi:10.37934/cfdl.16.10.111

Authors

Gunarjo Suryanto Budi Department of Physics Education, University of Palangka Raya, Palangka Raya, Central Kalimantan, Indonesia
Sasa Kenjeres Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands

DOI:

https://doi.org/10.37934/cfdl.16.10.111

Keywords:

Buoyancy, convective flow, eddy-viscosity, elliptic relaxation, algebraic approach

Abstract

The paper reports on the numerical turbulence model in predicting mass, momentum and heat transfer in a partially divided cavity heated from the side using buoyancy-extended eddy-viscosity and elliptic relaxation approach with the algebraic expressions for the Reynold stress tensor and turbulent heat flux vector. The CDS (central differencing scheme) and LUDS (linear upwind differencing scheme) were used as the discretization method and the governing equations were solved using the finite volume method and Navier-Stokes solver. Validation of the model has been carried out by experimental data of convective flow in the cavity as well as by numerical data DNS (direct numerical simulation). The model agrees very well with the experiment and DNS and it is also able to demonstrate the performance which is comparable to that of the previous advanced second-moment closure model (SMC) in the literature. The results show that the model is suitable for use in simulations of the turbulent convective flow in a cavity with partition and it has the potential to be applied to more complex cavities and a wide range of turbulence levels.

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Author Biographies

Gunarjo Suryanto Budi, Department of Physics Education, University of Palangka Raya, Palangka Raya, Central Kalimantan, Indonesia

gunarjo.budi@chem.upr.ac.id

Sasa Kenjeres, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands

S.Kenjeres@tudelft.nl

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