热膜技术在水流测速中的应用研究  

HOT FILM TECHNIQUE IN THE APPLICATION OF FLOW VELOCITY MEASUREMENT

作　　者：李永祥[1] 苑明顺[1] 李春华[1] 

机构地区：[1]清华大学,北京100084

出　　处：《流体力学实验与测量》1997年第4期45-50,共6页Experiments and Measurements in Fluid Mechanics

摘　　要：研究了在我国现有条件下，利用普通自来水，在室内和试验水槽中不设调温装置的情况下，热膜技术在水流测速中应用的有关技术问题。并利用从美国TSI公司进口的1050A恒温型热线／热膜流速仪测量了紊动射流和三峡溢流坝模型冲坑中掺气水流的脉动流速及紊动结构问题，获得了成功。This paper discusses the technical problems related to the hot film techniquc in the application of flow velocity measurement without installation of a temperature regulation device in experimental trough by using the general tap water in an indoor experment. By utilization of the Hot Wire/Hot Film Anemometer Model 1050A imported from the United States, the impulsive velocity of turbulent flow and aeratcd flow in the scour hole is successfully measured in the Three Gorge spillway dam model.

关 键 词：热膜技术 水探针 脉动流速 水流测速 流速仪 

分 类 号：TH815[机械工程—仪器科学与技术]