| 黄世钊,张 映,冼 萍,向 冰,吴林杰.旋流式气化炉冷态流场数值模拟研究[J].轻工机械,2017,35(2):5-10 |
| 旋流式气化炉冷态流场数值模拟研究 |
| Numerical Simulation of Cold Flow Field in Swirl Type Gasirier |
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| DOI：10.3969/j.issn.1005-2895.2017.02.002 |
| 中文关键词: 旋流式气化炉 计算流体力学( CFD) 开孔率 旋流片角度 FLUENT软件 |
| 英文关键词:swirl type gasifier computational fluid dynamics ( CFD ) opening ratio swirl plate angle FLUENT software |
| 基金项目:广西科学研究与技术开发计划项目（桂科攻0992022-5） |
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| 中文摘要: |
| 为探究一种新型旋流式气化炉冷态流场分布特性及内部结构对其流场的影响，应用计算流体力学( CFD)软件
FLUENT对该气化炉进行三维数值模拟分析。采用RNG K-8湍流模型，通过多点测压实验，对模拟结果进行验证，并且
采用不同的开孔率及旋流片角度组合分析气化炉内部结构对其流场的影响。结果表明：模拟和测压实验结果较为一致；
旋流式气化炉内气流主要做螺旋上升运动；栅板开孔率大小主要影响气化炉内压降、轴向速度以及湍流强度；而旋流片
角度则主要影响切向速度及湍流强度分布。新型旋流式气化炉内部栅板旋流片结构可增加气化反应速率及反应停留
时间，有助于气化反应的进行。 |
| 英文摘要: |
| Three dimensional numerical simulation of cold flow field in a new type of swirl gasifier was carried out by
using computational fluid dynamics(CFD) software FLUENT, in order to explore the influence of the cold flow field
distribution characteristics and the internal structure on the flow field of a swirl gasifier. RNG K-E turbulence model was
used in the simulation research, and the accuracy of the model was verified through multi-point pressure test. The
influence of the internal structure of the gasifier on the flow field was analyzed by using the different opening ratio and
the angle of swirl plate. The results show that the simulation and experimental results are basically consistent, and the
air flow in the swirl gasifier is mainly the spiral upward movement. The opening ratio of grate mainly influence pressure ,
axial velocity and turbulence intensity and the angle of swirl plate mainly influence tangential velocity and turbulence
intensity distribution in the swirl gasifier. The grate-swirl plate structure in a new type of swirl gasifier can increase the
gasification reaction rate and reaction time that contribute to the gasification reaction. |
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