scholarly journals Laser Doppler Velocimetry for Joint Measurements of Acoustic and Mean Flow Velocities: LMS-Based Algorithm and CRB Calculation

2008 ◽  
Vol 57 (7) ◽  
pp. 1455-1464 ◽  
Author(s):  
L. Simon ◽  
O. Richoux ◽  
A. Degroot ◽  
L. Lionet
Keyword(s):  
Laser Doppler Velocimetry ◽  
Laser Doppler ◽  
Doppler Velocimetry ◽  
Mean Flow ◽  
Flow Velocities

Velocity and vorticity distributions in periodic separating laminar flow

1987 ◽  
Vol 184 ◽  
pp. 303-333 ◽  
Author(s):  
D. S. Mathioulakis ◽  
D. P. Telionis
Keyword(s):  
Laminar Flow ◽  
Laser Doppler Velocimetry ◽  
Laser Doppler ◽  
Doppler Velocimetry ◽  
Mean Flow ◽  
Circular Arc ◽  
Periodic Disturbance ◽  
Unsteady Separation ◽  
The Mean

Steady and unsteady velocity components over a backward-facing circular arc are measured by laser-Doppler velocimetry. A periodic disturbance is added to the mean flow and the response of unsteady separation is investigated. Special attention is given to the distribution and the flux of vorticity.

scholarly journals Investigation of Internal Flow in Centrifugal Pump Diffuser using Laser Doppler Velocimetry (LDV) and Computational Fluid Dynamics

2021 ◽  
Vol 1909 (1) ◽  
pp. 012075
Author(s):  
Daisuke Sugiyama ◽  
Asuma Ichinose ◽  
Tomoki Takeda ◽  
Kazuyoshi Miyagawa ◽  
Hideyo Negishi ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Centrifugal Pump ◽  
Laser Doppler Velocimetry ◽  
Internal Flow ◽  
Laser Doppler ◽  
Doppler Velocimetry

scholarly journals Laser-Doppler Velocimetry Measurements Inside a Backward Curved Centrifugal Fan

2001 ◽  
Vol 7 (3) ◽  
pp. 173-181
Author(s):  
Tong-Miin Liou ◽  
Meng-Yu Chen
Keyword(s):  
Flow Rate ◽  
Turbulence Intensity ◽  
Laser Doppler Velocimetry ◽  
Reverse Flow ◽  
Flow Region ◽  
Design Flow ◽  
Laser Doppler ◽  
Centrifugal Fan ◽  
Doppler Velocimetry ◽  
Flow Rates

Laser-Doppler velocimetry (LDV) measurements are presented of relative mean velocity and turbulence intensity components inside the impeller passage of a centrifugal fan with twelve backward curved blades at design, under-design, and over-design flow rates. Additional LDV measurements were also performed at the volute outlet to examine the uniformity of the outlet flow for the three selected flow rates. Complementary flow visualization results in the tongue region are further presented. It is found that the number of characteristic flow regions and the average turbulence level increase with decreasing air flow rate. For the case of under-design flow rate, there are a through-flow region on the suction side, a reverse flow region on the pressure side, and a shear layer region in between. The corresponding average turbulence intensity is as high as 9.1% of blade tip velocity.

scholarly journals Imaging laser Doppler velocimetry

2011 ◽  
Vol 52 (4) ◽  
pp. 1017-1026 ◽  
Author(s):  
Alexander H. Meier ◽  
Thomas Roesgen
Keyword(s):  
Laser Doppler Velocimetry ◽  
Laser Doppler ◽  
Doppler Velocimetry
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