Large Eddy Simulation of turbulent natural convection in an inclined tall cavity. (18th August 2018)

• Record Type: Journal Article
• Authors: Doukkali, Hanae; Abide, Stéphane; Lhassane Lahlaouti, Mohamed; Khamlichi, Abdellatif
• Is Part Of: Numerical heat transfer. Volume 74:Number 4(2018)
• Page Start: 1175
• Page End: 1189
• Publication Date: 2018-08-18
• Subjects: Heat -- Transmission -- Measurement -- Periodicals; Mass transfer -- Measurement -- Periodicals; Numerical analysis -- Periodicals; 621.4022
• DOI: 10.1080/10407782.2018.1509602
• Languages: English
• ISSNs: 1040-7782

Abstract

Abstract: To a better understanding of buoyancy-driven flows in enclosed tall cavity, Large Eddy Simulations are performed with an original solver, which combines fourth-order compact scheme and parallel computing. The direct numerical simulation of the natural convection flow between two heated parallel plates are provided to validate the present numerical method. Then, the mean and turbulent statistics of the buoyancy-driven in a tall cavity at the moderate Rayleigh number are computed. The results of the vertical configuration flow are successfully compared with the available experimental data. Then, the statistics are discussed with respect to the inclination angle of the tall cavity. Especially, the occurrence of convection rolls in the cavity inclined to the horizontal is shown, as well as their roles in the deterioration of the thermal stratification.