摘要
为了研究液固两相流动系统中固体颗粒的浓度和速度随操作条件的变化,开发了适用于液固两相流动体系的电荷耦合器件(CCD)测量系统.该系统可在高空隙率和较宽液速范围内准确测量固体颗粒的速度与浓度.利用该CCD测量系统,对冷模(多管)循环流化床的分布板设计和冷模(单管)液固循环流化床的两相流动特性进行了研究.系统中采用的CCD单场测量方法可用于粒子高速运动情况,测得的颗粒最高运动速度为1.5m/s.测量精度高于奇偶两场的测量精度.
To study the change of solid particle holdup and velocity in operating conditions, a charge coupled devices (CCD) measurement system has been developed to accurately measure the velocity and holdup of the particles in liquid-solid two-phase flow system in high voidage and wider velocity range. The distributor design for circulating the fluidized bed with multi-tube and liquid-solid two-phase flow properties in circulating the fluidized bed with single-tube has been studied. The CCD single field measurement method in this system can be used to measure the particles of high velocity, and the highest movement velocity of the particles measured is (1.5 m/s .)The measurement precision is higher than that of both the odd and the even fields.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2004年第1期1-5,共5页
Journal of Tianjin University：Science and Technology
基金
九五"国家重点科技攻关资助项目(86 610 21 01).
