流化床内生物质石英砂双组分混合流动混沌递归分析

doi:10.3969/j.issn.0438-1157.2014.03.007

化工学报 ›› 2014, Vol. 65 ›› Issue (3): 813-819.DOI: 10.3969/j.issn.0438-1157.2014.03.007

流化床内生物质石英砂双组分混合流动混沌递归分析

王肖祎, 仲兆平, 王春华

东南大学能源与环境学院, 能源热转换及其过程测控教育部重点实验室, 江苏南京 210096

收稿日期:2013-07-03 修回日期:2013-07-29 出版日期:2014-03-05 发布日期:2014-03-05
通讯作者: 仲兆平
作者简介:王肖祎（1990—），女，硕士研究生。
基金资助:
国家自然科学基金项目（51276040）；国家重点基础研究发展计划项目（2013CB228106，2011CB201505）；江苏省研究生创新计划（CX10B_065Z）。

Chaotic recurrence analysis of two-component flow of mixed biomass particles and quartz sands in fluidized-bed

WANG Xiaoyi, ZHONG Zhaoping, WANG Chunhua

Key Laboratory of Energy Thermal Conversion and Control of the Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu, China

Received:2013-07-03 Revised:2013-07-29 Online:2014-03-05 Published:2014-03-05
Supported by:
supported by the National Natural Science Foundation of China (51276040), the National Basic Research Program of China (2013CB228106, 2011CB201505) and the Scientific Innovation Research of College Graduate in Jiangsu Province (CX10B_065Z).

摘要/Abstract

摘要： 采用递归分析方法对流化床内的压力脉动信号进行分析，研究了不同工况下石英砂与柱形生物质颗粒混合双组分颗粒的流动特性。柱形生物质颗粒尺寸为10 mm×10 mm（直径×长），石英砂粒径为0.8 mm。在鼓泡床阶段，随着生物质含量的增加，系统的周期性呈现先减弱再增强的变化趋势；该阶段确定性与层流率均表现为随气速的增加而增大，其值在生物质含量低时会明显减小，系统熵则随着气速的增大而减小。在腾涌阶段，生物质添加前后系统信号的递归图呈现相似的纹理特征，确定性与层流率变化较小，此时熵随着气速的增加而减小，与单组分流动呈现相反的趋势。

关键词: 递归图, 递归定量分析, 生物质, 混合, 流化床, 混沌

Abstract: Recurrence plot and recurrence quantification analysis were used to analyze the pressure fluctuation signal, and particle flow characteristics at different numbers of biomass, quartz sands and different gas velocities were investigated. The quartz sands with the diameter of 0.8 mm and cylinder-shaped biomass particles with both diameter and length of 10 mm were used as bed materials. In the bubbling section, the periodicity of the system decreased first and then increased with increasing proportion of biomass. In the slugging section, recurrence plots of signal had the same textural feature in the fluidized-bed before and after biomass was added. The bubbling section determinism and laminarity flow rate increased with increasing gas velocity, and significantly decreased at a low proportion of biomass, but entropy of the system decreased with increasing gas velocity. The slugging section determinism and laminarity flow rate had a small change and entropy of the system decreased with increasing gas velocity, showing opposite tendency from the one-component system.

Key words: recurrence plot, recurrence quantification analysis, biomass, blend, fluidized-bed, chaos

中图分类号:

TQ051

王肖祎, 仲兆平, 王春华. 流化床内生物质石英砂双组分混合流动混沌递归分析[J]. 化工学报, 2014, 65(3): 813-819.

WANG Xiaoyi, ZHONG Zhaoping, WANG Chunhua. Chaotic recurrence analysis of two-component flow of mixed biomass particles and quartz sands in fluidized-bed[J]. CIESC Journal, 2014, 65(3): 813-819.

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流化床内生物质石英砂双组分混合流动混沌递归分析

Chaotic recurrence analysis of two-component flow of mixed biomass particles and quartz sands in fluidized-bed

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