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

fYear

2011

fDate

26-28 July 2011

Firstpage

4738

Lastpage

4740

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Technology (ICMT), 2011 International Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-61284-771-9

Type

conf

DOI

10.1109/ICMT.2011.6001728

Filename

6001728