scholarly journals TWO PHASE TURBULENT FLOW MEASUREMENTS IN A NINETY DEGREE BEND USING LASER DOPPLER ANEMOMETRY

1983 ◽  
Author(s):  
ΙΩΑΝΝΗΣ ΚΛΙΑΦΑΣ
Keyword(s):  
Turbulent Flow ◽  
Laser Doppler Anemometry ◽  
Laser Doppler ◽  
Two Phase ◽  
Flow Measurements

scholarly journals A spectral analysis of laser Doppler anemometry turbulent flow measurements in a ship air wake

2015 ◽  
Vol 229 (12) ◽  
pp. 2309-2320 ◽  
Author(s):  
R Bardera-Mora ◽  
MA Barcala-Montejano ◽  
A Rodríguez-Sevillano ◽  
G González de Diego ◽  
M Ruiz de Sotto
Keyword(s):  
Spectral Analysis ◽  
Turbulent Flow ◽  
Laser Doppler Anemometry ◽  
Laser Doppler ◽  
Flow Measurements

Turbulent Flow Measurements by Laser-Doppler Anemometry in Motored Piston-Cylinder Assemblies

1979 ◽  
Vol 101 (2) ◽  
pp. 208-216 ◽  
Author(s):  
A. P. Morse ◽  
J. H. Whitelaw ◽  
M. Yianneskis
Keyword(s):  
Cylinder Head ◽  
Laser Doppler Anemometry ◽  
Laser Doppler ◽  
Cylinder Wall ◽  
Mean Velocity ◽  
Flow Measurements ◽  
Piston Bowl ◽  
Piston Cylinder ◽  
Large Vortex ◽  
Strong Vortex

Laser-Doppler anemometry has been used to quantify the mean velocity and turbulence characteristics of the isothermal, incompressible flow within a piston-cylinder arrangement motored without compression at 200 rpm and with idealized inlet geometries corresponding to a pipe and to an annular port located in the centre of the cylinder head. The results indicate that the pipe entry gives rise to a strong vortex near the piston as the indrawn air is deflected radially along the piston face and cylinder wall; this, in turn, gives rise to a weaker, counter-rotating vortex near the cylinder head which grows appreciably as the piston approaches bottom-dead-centre. With the annular-port entry, the inlet jet is angled and results in a flow pattern with a large vortex occupying nearly all of the flow space with much smaller vortices at the corners between the wall and the piston and cylinder heads. The effect of a piston bowl was also investigated for the port entry and is shown to be small.

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