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论文:2015,Vol:33,Issue(3):388-394 |
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引用本文： |
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黄启龙, 李进贤, 郑亚, 朱国强, 赵思珍. 旋流式进料喷嘴实验与流场结构数值模拟[J]. 西北工业大学学报 |
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Huang Qilong, Li Jinxian, Zheng Ya, Zhu Guoqiang, Zhao Sizhen. Experiments on and Numerical Simulation of Flow Field of a Swirl Feed Nozzle[J]. Northwestern polytechnical university |
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| 旋流式进料喷嘴实验与流场结构数值模拟 |
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| 黄启龙1, 李进贤1, 郑亚1, 朱国强1, 赵思珍2 |
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1. 西北工业大学 航天学院, 陕西 西安 710072;
2. 中国石化工程建设公司, 北京 100101 |
| 摘要: |
| 针对旋流式催化裂化进料喷嘴进行了实验研究和数值模拟。实验中测量了不同工况下的雾化粒径和喷嘴的雾化角,同时验证了各段的压降分配方案。通过VOF(volume of fluid)方法对喷嘴气液两相流的流动过程进行了数值模拟,描述了喷嘴中两相流的填充过程,得到了喷嘴的压力、速度分布和雾化角,并与实验结果进行了比较,二者吻合较好。对上述结果分析后表明,该型旋流式喷嘴雾化粒径在53~60 μm,雾化角随气液比或流量的增大而有所增加,采用内外嵌套式旋流器可使射流厚度较为均匀。 |
| 关键词:
催化裂化
喷嘴
流场
两相流
雾化粒径
VOF方法
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| Experiments on and Numerical Simulation of Flow Field of a Swirl Feed Nozzle |
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| Huang Qilong1, Li Jinxian1, Zheng Ya1, Zhu Guoqiang1, Zhao Sizhen2 |
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1. College of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. Sinopec Engineering Incorporation, Beijing 100101, China |
| Abstract: |
| Experiments on and numerical simulation of a swirl fluid catalytic cracking (FCC) feed nozzle were presented. In the experiments, the spray angle and sauter mean droplet (SMD) were measured at different flow rates. Then pressure drop on each section of nozzle was verified. Volume of Fluid (VOF) method was used to simulate the gas-liquid flow process in a swirl FCC feed nozzle. The simulation exhibited the process of two-phase flow filling feed nozzle. The nozzle pressure, velocity distribution and spray angle were calculated; the calculated results agreed well with validated by experimental data. The results show that: the SMD size of feed nozzle is 53-60μm; the spray angle increases with increasing gas/liquid mass ratio or flow rate; the spray pattern is fairly evenly distributed within combined cyclone. |
| Key words:
calculations
catalytic cracking
nozzles
flow fields
two phase flow
flow velocity
design of experiments
computer simulation
mathematical models
mesh generation
pressure drop
velocity distribution
FCC(fluid catalytic cracking)
SMD(sauter mean droplet)
VOF(volume of fluid)
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| 收稿日期: 2014-09-28
修回日期:
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| DOI: |
| 通讯作者:
Email： |
| 作者简介: 黄启龙(1985—),西北工业大学博士研究生,主要从事流场结构研究。
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