内置转子圆管内CaCO_3污垢形成过程的数值模拟  

Numerical simulation of the fouling process in a circular tube with inserted rotors

作　　者：姜鹏[1] 阎华[1] 关昌峰[1] 张震[1] 丁玉梅[1] 杨卫民[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2013年第3期1-5,共5页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家"十二五"科技支撑计划(2011BAA04B02);北京市自然科学基金(3102023)

摘　　要：从传热传质的角度建立了内置转子圆管内CaCO3污垢形成过程的数学模型,并进行了相应的数值模拟。计算结果表明,内置转子圆管内的温度场及浓度场都比光管均匀;同一截面处,内置转子后圆管的污垢沉积率和剥蚀率有所降低,光管热阻为内置转子圆管热阻的3～4倍;圆管的污垢沉积率、剥蚀率及热阻随入口浓度的增加而变大。A mathematical model of the CaCO3 fouling process in a tube has been proposed based on the theory of heat and mass transfer.Numerical simulations were also carried out.The calculation results showed that both the temperature field and concentration field in a circular tube containing rotors were more uniform than those in a plain tube,the fouling deposition,fouling removal rate and fouling resistance in the rotor-containing tube were smaller than those in a plain tube with the same cross section,and the fouling resistance of the plain tube was 3-4 times larger than that of the rotor-containing tube.An increase in concentration at the inlet led to an increase in fouling deposition,fouling removal rate and fouling resistance.

关 键 词：CACO3 污垢 转子 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]