TC型窑用四通道喷煤管结构性能仿真  

Simulation for structure capability of TC type four-channel coal burner

作　　者：王雪瑶[1,2] 姜凡[1] 刘长春[3] 刘石[4] 

机构地区：[1]中国科学院先进能源动力重点实验室(工程热物理研究所),北京100080 [2]中国科学院研究生院,北京100049 [3]北京凤凰工业炉有限公司,北京102600 [4]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206

出　　处：《辽宁工程技术大学学报（自然科学版）》2009年第3期397-400,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(40501017);国家重点基础研究发展计划(973计划)资助项目(2005CB422105)

摘　　要：为了考察燃烧器系统内复杂的气固两相流动行为,使用三维造型软件solidworks和CDF仿真软件FLUENT完成了对燃烧器的三维造型及性能仿真,使用κ-ε湍流模型和simple算法。差分格式均采用二阶迎风差分,求解代数方程采用三对角矩阵TDMA逐线迭代法。对燃烧器内流场的变化进行了数值分析与仿真,得到内部流场的分布图,分析了旋风道的扩口角度、扩口长度及旋流强度对回流区大小和长度的影响,得到了不同冷态工况下的回流区的分布情况,总结了燃烧器冷态流场分布的规律性,为后续的燃烧工况的研究提供了理论依据。In order to investigate the complicated turbulence behaviors, a 3-D modeling soft-ware Solidworks was used for generating a 3-D model and CFD simulation software FLUENT was used for simulating the air flow in a rotatory kiln. The simulation was based on κ-ε turbulence model and Simple algorithm. In addition, second-order up-wind difference was used for finite difference formulation. TDMA iteration method was used for solving algebraic equations. The variation of flow field inside rotatory kiln was simulated in order to obtain intemal flow map. At the same time, the effect on the size and length of recirculation zone by flaring angle, the intensity of eddy current and flaring length were investigated. Therefore, the distribution of recirculation zones was obtained under different cooling conditions. The distribution of coal flow field provides a basis for further study.

关 键 词：四通道窑用喷煤管 κ-ε模型 数值仿真 

分 类 号：O359[理学—流体力学]