摘要
利用κ－ε双方程模型对百叶窗煤粉浓缩器内流场进行了数值模拟，与试验对比吻合。并从其流场分布特点的角度分析了叶片间距、遮盖度对气流流动及气固分离的影响。指出，叶片间距对气流分配影响不显著，遮盖度的增加能明显使气流折向更急剧，从而增强浓缩效果。
Through the use of a dual equation turbulence model a numerical simulation is conducted of the flow field in a louver pulverized coal concentrator. The results obtained agree well with test ones. From the viewpoint of the flow field distribution features an analysis is conducted of the effect of blade spacing and cover ratio on air flow and gas solid separation. It is noted that the blade spacing has little effect to the air flow distribution and an increasing blade cover ratio can markedly lead to a more drastic deflection of gas flow, thereby enhancing the effect of concentration.
出处
《热能动力工程》
CAS
CSCD
北大核心
1998年第6期396-398,共3页
Journal of Engineering for Thermal Energy and Power
基金
国家"九五"重点科技攻关资助
关键词
煤粉浓缩器
数值模拟
气固分离
流场
燃烧技术
louver, pulverized coal concentrator, numerical simulation, gas solid separation
