高校化学工程学报2017，Vol.31Issue(4)：794-801,8.DOI:10.3969/j.issn.1003-9015.2017.04.006
提升管内颗粒团聚对两相流动混沌特征影响的递归分析
Chaotic Recurrence Analysis of Gas-Solid Two-Phase Flow in a Fluidized Bed Riser Affected by Particle Agglomerates
摘要
Abstract
Quartz sand with different agglomeration was used and artificial aggregation was created in a fluidized bed riser and spatially studied. Chaotic characteristics of two-phase flow systems in slugging and turbulent beds were analyzed by recurrence analysis of pressure fluctuation signals. The result shows that diagonal development trends are significant in the slugging bed, and the system has strong periodicity which is hardly affected by agglomeration. Moreover, for original quartz sand and micro agglomerates in turbulent bed, the increase of particle circulation flow can enhance diagonal trends. The determinacy is improved and the bifurcation is reduced, which indicates decrease of system chaotic characteristics. However, the structure and parameters of recurrence plots are hardly changed for nucleation agglomerates, which shows the chaotic characteristics of the system is hardly affected by particle circulation flow and agglomeration. For cementation and paste agglomerates, the isolated points in the recurrence plot are increased, and the determinacy is decreased but the bifurcation is enhanced, which reflects that chaotic characteristics of the system become stronger.关键词
递归图/团聚/混沌特性/节涌床/湍动床Key words
recurrence plot/agglomeration/chaotic characteristic/slugging bed/turbulent bed分类
化学化工引用本文复制引用
周云龙,朱效宇..提升管内颗粒团聚对两相流动混沌特征影响的递归分析[J].高校化学工程学报,2017,31(4):794-801,8.基金项目
国家自然科学基金(51276033). （51276033）
