scholarly journals A Study on Pulsating Flow through a Pipe with an Orifice (An Observation of Flow Field by Laser Doppler Velocimeter)

2005 ◽  
Vol 71 (704) ◽  
pp. 1051-1058
Author(s):  
Ema TAMURA ◽  
Junjiro IWAMOTO
Keyword(s):  
Flow Field ◽  
Pulsating Flow ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Flow Through

Integrated Microcomputer-LDV Instrumentation for Studying Finite Wing Aerodynamics

1993 ◽  
Author(s):  
Abdollah Khodadoust
Keyword(s):  
Reynolds Number ◽  
Flow Field ◽  
Data Acquisition ◽  
Fiber Optic ◽  
Three Dimensional ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Ice Accretion ◽  
Wing Model ◽  
Finite Wing

Abstract The effect of a simulated glaze ice accretion on the flow field of a three-dimensional wing is studied experimentally. A PC-based data acquisition and reduction system was used with a four-beam two-color fiber-optic laser Doppler velocimeter (LDV) to map the flow field along three spanwise cuts on the model. Results of the LDV measurements on the upper surface of the finite wing model without the simulated glaze ice accretion are presented for α = 0 degrees at Reynolds number of 1.5 million. Measurements on the centerline of the clean model compared favorably with theory.

Flow Field Investigation in a Low-Solidity Inducer by Laser-Doppler Velocimetry

1990 ◽  
Vol 112 (1) ◽  
pp. 91-97 ◽  
Author(s):  
A. Boccazzi ◽  
A. Perdichizzi ◽  
U. Tabacco
Keyword(s):  
Flow Field ◽  
Flow Rate ◽  
Reverse Flow ◽  
Field Investigation ◽  
Design Flow ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Pressure Probe ◽  
Specific Work ◽  
Flow Angle

The results of an experimental investigation of the flow field within a low-solidity inducer at design and off-design flow rates are presented and discussed; particular attention is devoted to the analysis of the flow field, at the tip in front of the leading edge, for the flow rate close to the back-flow onset. The flow field was measured by means of a laser-Doppler velocimeter at four different axial positions upstream, within, and downstream of the inducer. Axial, tangential, and relative flow angle distributions, in the measuring planes, are presented for three different flow coefficients. At the lower flow rate, the plots show the presence of reverse flow in the region close to the hub downstream of the trailing edge. For the same flow rate, quite low axial velocities are detected at the tip. This is in agreement with pressure probe traverses carried out in a slightly downstream section; these measurements also show radial inward velocities of the same order of magnitude as the axial velocities. Circumferentially averaged losses were evaluated from specific work and total head rise given by pressure probes.

scholarly journals Flow Field Measurement around a Marine Propeller by Laser Doppler Velocimeter

1986 ◽  
Vol 29 (248) ◽  
pp. 453-458
Author(s):  
Koichi KOYAMA ◽  
Akira KAKUGAWA ◽  
Michio OKAMOTO
Keyword(s):  
Flow Field ◽  
Field Measurement ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Marine Propeller ◽  
Flow Field Measurement

Laser Doppler velocimeter measurements of flow field around a bluff body

1998 ◽  
Vol 77-78 ◽  
pp. 457-465
Author(s):  
Robert E. Akins ◽  
Nathan E. Hottle ◽  
Timothy A. Reinhold
Keyword(s):  
Flow Field ◽  
Bluff Body ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter
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