城市污水的流动特性理论研究  

Theoretical research on flow characteristic of urban sewage

作　　者：徐莹[1,2] 伍悦滨[3] 孙德兴[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]哈尔滨工业大学土木工程学院,哈尔滨150090 [3]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2010年第8期1292-1296,共5页Journal of Harbin Institute of Technology

基　　金："十一五"国家科技支撑计划资助项目(2006BAJ16B03);黑龙江省科技攻关计划资助项目(GB078C20202);黑龙江省留学回国基金资助项目(LC06C16)

摘　　要：为了能使城市污水在污水源热泵方向进一步推广应用,以原生污水源热泵系统中的流动工质——城市污水为研究对象,采用理论推导与实验相结合的方法对城市污水在圆管中层流和紊流的流动特性进行分析与研究.结果表明:城市污水在流变性上体现为剪切稀化流体特性,可以通过临界广义雷诺数判别流态.在此基础上,通过理论推导得到了层流和紊流状态下的压降计算公式,并且通过阻力特性实验进行了验证.研究结果对原生污水源热泵系统中水泵的选择有一定的指导意义.In order to extend the utilization of urban sewage in sewage heat pump system,based on the urban sewage which is the flow working fluid in untreated sewage heat pump system,characteristics of laminar flow and turbulent flow were studied in theoretical derivation and experimental analysis.The results show that the urban sewage has the shear-thinning characteristic in rheology,so the generalized Reynolds number can be used to determine the flow pattern.The pressure loss equations under laminar and turbulent flow conditions were deduced theoretically and verified by experiment.The research results are favourable for pump choose of untreated sewage heat pump system.

关 键 词：原生污水源热泵 城市污水流动特性 理论推导 非牛顿流体 

分 类 号：TU111.19[建筑科学—建筑理论]