平流式沉淀池中部进水流场测量与数值模拟  

Measurement and modeling of rectangular primary sedimentation tanks with incoming flow at the middle of inlet

作　　者：刘百仓[1,2] 陈大宏[1] 刘映祥[3] 白玉华[3] 马军[4] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]四川大学建筑与环境学院,四川成都610065 [3]中国市政工程西南设计研究院,四川成都610081 [4]哈尔滨工业大学市政与环境工程学院,黑龙江哈尔滨150090

出　　处：《供水技术》2010年第5期1-5,共5页Water Technology

基　　金：水资源与水电工程科学国家重点实验室开放研究基金资助项目(2009B055);中央高校基本科研业务费四川大学青年教师科研启动基金资助项目(2009SCU11046)

摘　　要：为了深入了解与分析沉淀池内流场的特性,采用激光多普勒测速仪(Laser Doppler Velocimeter,LDV)对平流式模型沉淀池内中部进水情形时的流场进行了测量,限于三维测量的难度,初步进行了三维速度的精确测量,实验结果表明沉淀池内不同区域存在不同程度的三维流动。采用k-ε模型对流场进行了模拟,计算结果与实验结果总体吻合良好。就风速对流场产生的影响进行了初步的测量及探讨,发现风对沉淀池流场具有明显的影响,然而建立相应的理论模型还需要进一步研究。In order to analyze the characteristics of the flow field in sedimentation tank, Laser Doppler Velocimetry （LDV） instrument was used to measure the flow field of sedimentation tank with incoming flow at the middle of inlet. Limited to the difficulty of measuring three-dimensional velocity, a preliminary three-dimensional velocity measurement was conducted. There exists three-dimensional flow in sedimentation tank to varying degrees in different regions. The k-~ model was used to conduct simulation of the model sedimentation tank, the overall results were in good agreement with experimental results. A preliminary measurement of flow field under wind speed impact was studied, and it was found that the wind could significantly affect the flow field on the sedimentation tank, however, a theoretical model should be established in the further research.

关 键 词：沉淀池 激光多普勒测速仪 流场 测量 数值模拟 

分 类 号：TU991.23[建筑科学—市政工程]