DIRECT NUMERICAL SIMULATION OF THE TURBULENT RAYLEIGH - BENARD CONVECTION IN A SLIGHTLY TILTED CYLINDRICAL CONTAINER

被引：5

作者：

Smirnov, S., I ^{[1
]}

Smirnov, E. M. ^{[1
]}

机构：

[1] Peter Great St Petersburg Polytech Univ, 29 Politech Skaya St, St Petersburg 195251, Russia

来源：

ST PETERSBURG POLYTECHNIC UNIVERSITY JOURNAL-PHYSICS AND MATHEMATICS | 2020年 / 13卷 / 01期

关键词：

Rayleigh - Benard convection; tilted container; turbulence; direct numerical simulation; large-scale circulation; THERMAL-CONVECTION; HEAT-TRANSFER; MERCURY; WIND;

D O I：

10.18721/JPM.13102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Results of direct numerical simulation of the turbulent convection in a bottom-heated cylindrical container have been presented. The height-to-diameter ratio was equal to 1.0. The calculations were performed for two media: mercury (Pr = 0.025) and water (Pr = 6.4) at Ra = 10(6) and 10(8) respectively. To suppress possible azimuthal movements of the global vortex ( large-scale circulation) developing in the container, its axis was tilted a small angle with respect to the gravity vector. Structure of the time-averaged flow pattern symmetrical with respect to the central vertical plane was analyzed. Peculiarities of vortex structures developing in the corner zones were revealed. Representative profiles of the Reynolds stresses and components of the turbulent heat flux vector were obtained for the central vertical plane.

引用

页码：14 / 25

页数：12

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