# [1]向文国,徐祥,肖云汉.循环流化床上升段流体动力特性数值模拟[J].东南大学学报(自然科学版),2005,35(5):752-756.[doi:10.3969/j.issn.1001-0505.2005.05.021] 　Xiang Wenguo,Xu Xiang,Xiao Yunhan.Fluid dynamics numerical simulation for riser of circulating fluidized bed[J].Journal of Southeast University (Natural Science Edition),2005,35(5):752-756.[doi:10.3969/j.issn.1001-0505.2005.05.021] 点击复制 循环流化床上升段流体动力特性数值模拟() 分享到： var jiathis_config = { data_track_clickback: true };

35

2005年第5期

752-756

2005-09-20

## 文章信息/Info

Title:
Fluid dynamics numerical simulation for riser of circulating fluidized bed

1 东南大学洁净煤发电及燃烧技术教育部重点实验室, 南京 210096; 2 中国科学院工程热物理研究所, 北京 100083
Author(s):
1 Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education, Southeast University, Nanjing 210096, China
2 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100083, China

Keywords:

TK223.2
DOI:
10.3969/j.issn.1001-0505.2005.05.021

Abstract:
The Eulerian two-fluid model is established to simulate the gas-particle turbulent flow in the riser section of a circulating fluidized bed(CFB)reactor. The particle flow in the riser is thought as a continuous phase. The model, based on mass equation, momentum equation, k-ε equation and constitutive relations, is coded and solved using Fluent software package to simulate the two-dimensional flow in a riser. The results show that the flow pattern in the riser section of a CFB consists of a core-annular flow regime in which the solid density near the wall region is higher than that at the center of the riser. The solid velocity is high at the center of the riser and solid down-flow at the wall regions. The particles move from the center to the annular zone in the same section and the pressure drop in the riser rises with the increase of circulating mass at the same inlet gas velocity. The computational values agree well Pärssinen’s experimental results. Eulerian models can be used to forecast the performance of a fluidized bed and to guide the operation of the actual device.

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