Simultaneous Cross-Sectional Velocity Distribution Measurements Using Laser Doppler Velocimeter Employing 7 × 8 Spatial Encoding

2019 ◽  
Author(s):  
Mayu Yukinari ◽  
Koichi Maru
Keyword(s):  
Velocity Distribution ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Cross Sectional ◽  
Spatial Encoding

Proposal and design of integrated probe based on silicon photonics for laser Doppler cross-sectional velocity distribution measurement

2018 ◽  
Vol 57 (8S2) ◽  
pp. 08PE02 ◽  
Author(s):  
Koichi Maru ◽  
Hirofumi Watanabe ◽  
Kei Yamashita ◽  
Ryosuke Matsuda ◽  
Katsumi Nakatsuhara
Keyword(s):  
Velocity Distribution ◽  
Silicon Photonics ◽  
Laser Doppler ◽  
Cross Sectional ◽  
Distribution Measurement

Two-beam fiber laser Doppler velocimeter enabling velocity distribution measurement of liquid flow

2011 ◽  
Author(s):  
Anas Luqman Bin Muhamad ◽  
Atsushi Ugajin ◽  
Osamu Mikami ◽  
Toshio Okazaki ◽  
Yuzo Yoshikuni
Keyword(s):  
Velocity Distribution ◽  
Fiber Laser ◽  
Liquid Flow ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Distribution Measurement

Experimental Research on Velocity Distribution and Attenuation Characteristic of Spiral Flow by Laser Doppler Velocimeter

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
Rao Yongchao ◽  
Wang Shuli ◽  
Zhou Shidong ◽  
Li Entian ◽  
Liu Wenming
Keyword(s):  
Velocity Distribution ◽  
Tangential Velocity ◽  
Hydrate Formation ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Spiral Flow ◽  
Horizontal Pipe ◽  
Attenuation Characteristic ◽  
Working Medium ◽  
Gas Hydrate Formation

An experimental study was conducted to get more insight into the flowing characteristics of single phase spiral flow in the horizontal pipe by the use of a laser Doppler velocimeter (LDV). Water was used as the working medium, and the spiral motion was produced by a vane. The vanes with different spiral angles and vane area were self-made. Influence of flow attenuation, average Reynolds number, spiral angle, and vane area on axial velocity distribution and tangential velocity distribution were studied. Turbulence intensity distribution was studied, and the spiral strength attenuation law was analyzed. The experimental results show that the vane is an efficient spiral device with low pressure drop, and it is used in pipeline, natural gas hydrate formation, and so on.

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