第18卷第2期 2018年4月
流动与传递
过程工程学报
The Chinese Jourmal of Process Engineering
Vol.18 No.2 Apr.2018
DOI: 10.12034/j.issn.1009-606X.217197
基于0-1测试的底吹搅拌混合过程混沌特性分析
徐建新1.4*，王华13
高勤12，肖清泰13，
王仕博13，
李13，
(1.昆明理工大学省部共建复杂有色金属资源清洁利用国家重点实验室，云南昆明650093；2.昆明理工大学数学系，云南昆明650500：
3.昆明理工大学冶金与能源工程学院，云南昆明650093；4，昆明理工大学质量发展研究院，云南昆明650093)
摘要：通过建立水力学模型研究底吹搅拌混合过程，利用流场可视化技术与直接成像技术获取实验图像数据，引入0-1测试方法，考察了喷枪布置方式(个数与角度)对混合过程混沌特性的影响.结果表明，基于额色指示剂，利用数字图像处理手段可以近似估测混合过程的气含率，气含率演化规律符合实际工况运行特征：对各工况的气含率时间序列进行0-1测试，渐进增长率 K。中位数在一定程度上反映了不同混合过程的混沌强弱.
关键词：底吹搅拌；喷枪布置：混沌特性：0-1测试：图像分析
中图分类号：TF811
文献标识码：A
文章编号：1009-606X(2018)02-0288-06
Analysis on Chaotic Characteristics of Bottom-blowing Stirred Mixing Process Based on 01 Test
Qin GAOL2,Qingtai XIAO3,Shibo WANGI3,Peng LI'3,Jianxin XU14*,Hua WANGl.3
(I.StateKey Laboratory of ComplexNonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China,
2. Department of Mathematics, Kunming University of Science and Technology, Kunming. Yunnan 650500, China;
3. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming., Yinnan 650093, China,
4. Quality Development Institute, Kunming University of Science and Technology, Kunming, Yunnan 650093, China)
Abstract: Bottom-blowing mixing process was studied by fabricating the hydraulics model. Experimental image data was obtained using fluid visualization and digital imaging technologies. A novel chaos detection technique O1 test was employed to investigating the effect of nozzles arrangement, including the number and angie, on chaotic characteristic of mixing process. The results showed that the gas hold-up content could be estimated approximately by means of color indicator and digital image processing technology. The evolution of gas hold-up has good agreement with the real experiment running state. In addition, the time series of gas hold-up were tested by 01 method, respectively. It was demonstrated that the values of asymptotic growth rate Ke median have basically reflected the intensity of chaotic characteristics of different experimental conditions to some extent.
Key words: bottom-blowing stirred; nozzles arrangement; chaotic characteristics; 01 test; image analysis
1
前言
为增强渣金交互作用及促进脱硫反应，通常会从熔
炼炉的顶部或底部鼓入气体强化搅拌混合(，在底吹熔池熔炼工艺中，熔炼炉中的气泡在上升过程中穿越渣金界面直至渣相项层[2)，卷渣与增氮等非期望现象对最终冶金产品质量有十分不利的影响[3]，为提高混合效率， Aref4)提出可通过反复折叠和拉伸流线诱发混沌现象，
使流体处于宏观不稳定状态，实现混沌混合(Chaotic Mixing).基于混沌混合的遍历性特征，两种流体或溶剂如果处于混沌状态十分容易混合.研究[5-7]发现混沌混合能有效改善冶金、化工等各类反应器内多相流体的混合效果开展冶金领域中底吹多相搅拌混合系统混沌特性的研究对探索混沌搅拌(ChaoticStirring)先进工艺、实现冶金过程降耗减排、省时节能及提升冶金产品质量具有重要的实践价值
收稿日期：20170327，修回日期：2017-0714
基金项目：国家白热科学基金资助项目(编号：51666006：51406071)：云南省科技领军人才计划项目(编号：2015HA019)：张文海院士工作站项目
（编号：2015IC005)
高勤(1993-)，女，安微省宿州市人，硕士研究生，从事工业图像处理研究，Tel:18208710171,E-mail:qingao1126@163.com：徐建新，通讯
作者简介：
联系人, Tel: 15912469765, E-mail: jianxinxu@kmustedu.cn, xujianxina@163.com
：高助，肖清泰，王仕博，等，基于0-1测试的底吹提拌况合过程滤沌特性分析，过程工程学报，2018,18(2)：288-293.
引用格式：
Gao Q, Xiao Q T, Wang S B, et al. Analysis on Chaotic Characteristics of Bottomblowing Strred Mixing Process Based on 01 Test (in Chinese), Chin. J. Process Eng-, 2018, 18(2): 288293, DOI: 10.12034/jissn.1009-606X.217197.
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