Title :
Velocity momentums transformation considering flume slope for 2D LDV measurement
Author :
Yan, Jing ; Luo, Chao ; Tian, Zhijun ; Chen, Hong ; Tang, Limo
Author_Institution :
State Key Lab. of Hydrol.-Water Resources & Hydraulic Eng., Haohai Univ., Nanjing, China
Abstract :
In the flume experiment, the directions of measured velocity by 2D LDV (Laser Doppler Velocimetery) usually are not the streamwise and vertical direction of the flume respectively. And thus the measured velocity momentums are not along the streamwise and vertical direction of the flow. In this paper, the velocity momentums transfer considering flume slope with 2D LDV measurement is studied. Based on the defintions of velocity momentums, the transformation formulae are deduced. The application of the transformation formulae in uniform flow with rough bed shows that the slope can not be ignored.
Keywords :
flow visualisation; velocity measurement; 2D LDV measurement; 2D laser Doppler velocimetery measurement; flow streamwise direction; flow velocity measurement; flume experiment; velocity momentum transformation formulae; Doppler effect; Educational institutions; Hydroelectric power generation; Measurement by laser beam; Velocity measurement; Water conservation; Water resources; 2D LDV; flume slope; transformation formulae; velocity momentums;
Conference_Titel :
Multimedia Technology (ICMT), 2011 International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-61284-771-9
DOI :
10.1109/ICMT.2011.6001728
