Turbulent natural convection in a differentially heated cavity of aspect ratio 5 filled with non-participating and participating grey media

被引：9

作者：

Capdevila, R. ^{[1
]}

Lehmkuhl, O. ^{[2
]}

Trias, F. X. ^{[1
]}

Perez-Segarra, C. D. ^{[1
]}

Colomer, G. ^{[2
]}

机构：

[1] UPC, CTTC, Lab Termotecn & Energet, C Colom 11, E-08222 Barcelona, Spain

[2] Termofluids SL, E-08204 Barcelona, Spain

来源：

13TH EUROPEAN TURBULENCE CONFERENCE (ETC13): STATISTICAL ASPECTS, MODELLING AND SIMULATIONS OF TURBULENCE | 2011年 / 318卷

关键词：

ENCLOSURES; EQUATION;

D O I：

10.1088/1742-6596/318/4/042048

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In the present work, turbulent natural convection in a tall differentially heated cavity of aspect, ratio 5:1, filled with air (Pr = 0.7) under a Rayleigh number based on the height of 4.5.10(10), is studied numerically. Two different situations have been analysed. In the first one, the cavity is filled with a transparent medium. In the second one, the cavity contains a grey participating gas. The turbulent flow is described by means of Large Eddy Simulation (LES) using symmetry-preserving discretizations. Simulations are compared with experimental data available in the literature and with Direct Numerical Simulations (DNS). Surface and gas radiation have been simulated using the Discrete Ordinates Method (DOM). The influence of radiation on fluid flow behaviour has also been analysed.

引用

页数：10

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