Title :
A method of flow measurement in draft tube
Author :
Honghao Chen ; Xiaoyan Shi ; Xianhe Zhao ; Xiaoqin Li
Author_Institution :
Coll. of Water Resources & Civil Eng., China Agric. Univ., Beijing, China
Abstract :
The measurement of flow rate is the most difficult and challenging part of the hydropower station tests. This paper provided a method based on differential pressure which has high precision, less cost and convenience. Three-dimensional numerical simulation was performed for NTNU (Norwegian University of Science and Technology) model turbine in steady conditions, meanwhile a new expression of flow rate and differential pressure of bent elbow was proposed. It was proved that the pressure difference method could be applied to the real-time flow measurement in draft tube and its error was in an acceptable range.
Keywords :
flow measurement; flow simulation; hydroelectric power stations; numerical analysis; pipe flow; pipes; NTNU model turbine; Norwegian University of Science and Technology; bent elbow; differential pressure; draft tube; flow measurement method; flow rate measurement; hydropower station tests; pressure difference method; real-time flow measurement; steady conditions; three-dimensional numerical simulation; Draft Tube; Flow Measurement; Hydraulic Machinery; Pressure Difference Method;
Conference_Titel :
Fluid Machinery and Fluid Engineering, 2014 ISFMFE - 6th International Symposium on
Print_ISBN :
978-1-84919-907-0
DOI :
10.1049/cp.2014.1200
