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.
作者
高勤
肖清泰
王仕博
李鹏
徐建新
王华
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)
出处
《过程工程学报》
CAS
CSCD
北大核心
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)
关键词
底吹搅拌
喷枪布置
混沌特性
0-1测试
图像分析
bottom-blowing stirred
nozzles arrangement
chaotic characteristics
0-1 test
image analysis
