Laser anemometry

2011 ◽  
pp. 99-142
Author(s):  
Giuseppe P. Russo
Keyword(s):  
Laser Anemometry

A Study of Reynolds Stresses, Triple Products and Turbulence States in a Radially Stirred Tank with 3-D Laser Anemometry

2004 ◽  
Vol 82 (9) ◽  
pp. 1214-1228 ◽  
Author(s):  
C. Galletti ◽  
E. Brunazzi ◽  
S. Pintus ◽  
A. Paglianti ◽  
M. Yianneskis
Keyword(s):  
Stirred Tank ◽  
Reynolds Stresses ◽  
Laser Anemometry

Fibre optic laser anemometry for turbomachinery applications

1992 ◽  
Vol 16 (2-3) ◽  
pp. 193-205 ◽  
Author(s):  
N.A. Ahmed ◽  
S. Hamid ◽  
R.L. Elder ◽  
C.P. Forster ◽  
R.P. Tatam ◽  
...  
Keyword(s):  
Fibre Optic ◽  
Laser Anemometry

scholarly journals Investigation of Flow Phenomena in a Transonic Fan Rotor Using Laser Anemometry

1985 ◽  
Vol 107 (2) ◽  
pp. 427-435 ◽  
Author(s):  
A. J. Strazisar
Keyword(s):  
Pressure Rise ◽  
Peak Efficiency ◽  
Laser Anemometry ◽  
Low Aspect Ratio ◽  
Laser Anemometer ◽  
Flow Phenomena ◽  
Shock System ◽  
Shock Oscillation ◽  
Transonic Fan ◽  
System Geometry

Several flow phenomena, including flow field periodicity, rotor shock oscillation, and rotor shock system geometry have been investigated in a transonic low aspect ratio fan rotor using laser anemometry. Flow periodicity is found to increase with increasing rotor pressure rise and to correlate with blade geometry variations. Analysis of time-accurate laser anemometer data indicates that the rotor shock oscillates about its mean location with an amplitude of 3–4 percent of rotor chord. The shock surface is nearly two-dimensional for levels of rotor pressure rise at and above the peak efficiency level but becomes more complex for lower levels of pressure rise. Spanwise shock lean generates radial flows due to streamline deflection in the hub-to-shroud streamsurface.

Design, Test and Analysis of a High-Pressure-Ratio Transonic Fan

2003 ◽  
Author(s):  
W. John Calvert ◽  
Paul R. Emmerson ◽  
Jon M. Moore
Keyword(s):  
High Performance ◽  
Mechanical Design ◽  
Pressure Ratio ◽  
Operating Conditions ◽  
Pressure Transducers ◽  
Technology Acquisition ◽  
Laser Anemometry ◽  
High Pressure Ratio ◽  
Response Pressure ◽  
Stage Matching

Aircraft gas turbine engines require compression systems with high performance and low weight and cost. There is therefore a continuing drive to increase compressor stage pressure ratios, particularly for military fans. To meet this need, a technology acquisition programme has been carried out by QinetiQ and Rolls-Royce. Firstly, the stage matching issues for an advanced two-stage military fan were investigated, including the effects of employing variable inlet guide vanes. From this, the requirements for the first stage together with key operating conditions for the blading were defined. The blade profiles were then designed to satisfy the range of aerodynamic conditions using a quasi-3D calculation system. A satisfactory compromise between the aerodynamic and mechanical design requirements was reached in which a blisk construction was employed for the rotor, machined from a single piece of titanium. The new stage was manufactured and tested successfully, and it achieved its target flow, pressure ratio and efficiency on the first build. Detailed measurements of the internal flows using laser anemometry and high response pressure transducers were taken. Finally, these data have been analysed and used to calibrate current 3D multi-row CFD methods.

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