基于0-1测试的底吹搅拌混合过程混沌特性分析  

Analysis on Chaotic Characteristics of Bottom-blowing Stirred Mixing Process Based on 0-1 Test

作　　者：高勤[1,2] 肖清泰 王仕博[1,3] 李鹏[1,3] 徐建新[1,4] 王华[1,3] Qin GAO;Qingtai XIAO;Shibo WANG;Peng LI;Jianxin XU;Hua WANG(State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China;Department of Mathematics, Kunming University of Science and Technology, Kunming, Yunnan 650500, China;Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China;Quality Development Institute, Kunming University of Science and Technology, Kunming, Yunnan 650093, China)

机构地区：[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

出　　处：《过程工程学报》2018年第2期288-293,共6页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(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)

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,基于颜色指示剂,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Kc中位数在一定程度上反映了不同混合过程的混沌强弱.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 0-1 test was employed to investigating the effect of nozzles arrangement, including the number and angle, 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 0-1 method, respectively. It was demonstrated that the values of asymptotic growth rate K, median have basically reflected the intensity of chaotic characteristics of different experimental conditions to some extent.

关 键 词：底吹搅拌 喷枪布置 混沌特性 0-1测试 图像分析 

分 类 号：TF811[冶金工程—有色金属冶金]