摘要
城市原生污水的黏度特性是其作为冷热源应用的关键设计参数．将污水流动视为均质非牛顿幂律流，基于管式流变仪实验基础，分析层流条件时表观黏度的本构常数实验求解式，在紊流条件下基于卡门对数分布与尼古拉兹实验，推导平均流速、阻力速度与黏度项的关联式及其计算公式，定义特征黏度与计算雷诺数．在两种不同流态下测试污水的表观黏度η=2．2～8．0×10^-4（du／dy）^0.6，两种流态下表观黏度表现出一定的差异．
The viscosity of the urban original wastewater is a key parameter of heat exchange when it using as cool ＆ heat source. Using the tube rheometer as the experiment basis, treats the sewage as non-Newtonian exponential homogeneous fluid, and analyzes the viscosity＇ s special relationship in laminar flow. Based on Krrmrn logarithm distribution and Nikuradse experiment, the associated formula about the average velocity, resistance velocity and viscosity is obtained , and the characteristic viscosity and characteristic Reynolds rule arc defined, η = 2. 2 - 8.0 × 10^-4（du/dy）^0.6 from the two different states were tested, which have some differences. The complicated mixture in the wastewater influenced the viscosity observably, and the original wastewater shows the shear densenes characteristic.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2006年第9期1492-1495,共4页
Journal of Harbin Institute of Technology
基金
黑龙江省科技攻关项目(04GCZ1474)
关键词
城市原生污水
非牛顿流
表观黏度
特征黏度
urban wastewater
non-Newtonian
apparent viscosity
characteristic viscosity
