LATTICE BOLTZMANN SIMULATION OF MELTING PHENOMENON WITH NATURAL CONVECTION FROM AN ECCENTRIC ANNULUS

被引：25
|
作者：
Jourabian, Mahmoud [1 ]
Farhadi, Mousa [1 ]
Rabienataj Darzi, Ahmad Ali [1 ]
Abouei, Abbas [1 ]
机构：
[1] Babol Univ Technol, Fac Mech Engn, Babol Sar, Iran
来源：
THERMAL SCIENCE | 2013年 / 17卷 / 03期
关键词：
lattice Boltzmann method; melting; solid-liquid phase change; Bhatangar-Gross-Krook collision; natural convection; phase change material; PHASE-CHANGE MATERIAL; HORIZONTAL CONCENTRIC ANNULUS; RAYLEIGH-BENARD CONVECTION; HEAT-TRANSFER; MODEL; SOLIDIFICATION; CONDUCTION; FLOW; CAVITY; ENCLOSURE;
D O I：
10.2298/TSCI110510012J
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In the present study, a double-population thermal lattice Boltzmann method was applied to solve phase change problem with natural convection in an eccentric annulus. The simulation of melting process from a concentrically and eccentrically placed inner hot cylinder inside an outer cold cylinder with Prandt1 number of 6.2, Stefan number of 1, and Rayleigh number of 10(5) was carried out quantitatively. It was found that the position of the inner cylinder inside the outer cylinder significantly influence the flow patterns including the size and shape of two formed vortexes. It is also observed that the maximum of liquid fractions occurs where the inner cylinder is mounted at the bottom of outer cylinder.
引用
收藏
页码：877 / 890
页数：14
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