Influences of various vortex structures on the dispersion and deposition of small ash particles

被引：2

作者：

Li, Xiangpeng ^{[1
]}

Zhou, Hao ^{[1
]}

Cen, Kefa ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Thermal Power Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China

来源：

FUEL | 2008年 / 87卷 / 07期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

D O I：

10.1016/j.fuel.2007.07.007

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Numerical simulations were conducted to study the influences of various vortex structures on the dispersion and deposition processes of 1 μm to 10 μm diameter fly ash particles on the rear side surface of a boiler tube. Turbulent gas flow was simulated with detached eddy simulation (DES) method and vortex structures in the wakes were modeled. Results suggested that the motions of particles in the near wake region were controlled by different vortex structures, and the impact efficiency and deposit concentration on the rear side surface induced by the vortices varied considerably at different velocities. The results of volume percentages distribution of the deposited particles with various diameters simulated were in good agreement with the experimental data. © 2007 Elsevier Ltd. All rights reserved.

引用

页码：1379 / 1382

页数：4

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