Flow meter based on the trapped vortex pair fluidic oscillator

1989 ◽  
Vol 60 (5) ◽  
pp. 935-938 ◽  
Author(s):  
Hussein Mansy ◽  
David R. Williams
Keyword(s):  
Vortex Pair ◽  
Flow Meter ◽  
Fluidic Oscillator ◽  
Trapped Vortex

Evolution and Turbulence Properties of Self-Sustained Transversely Oscillating Flow Induced by Fluidic Oscillator

2007 ◽  
Vol 129 (8) ◽  
pp. 1038-1047 ◽  
Author(s):  
Rong Fung Huang ◽  
Kuo Tong Chang
Keyword(s):  
Stagnation Point ◽  
Vortex Pair ◽  
Transverse Oscillation ◽  
Oscillating Flow ◽  
Near Wake ◽  
Fluidic Oscillator ◽  
Planar Jet ◽  
Oscillation Process ◽  
Gravity Driven ◽  
Flow Evolution

The evolution process and turbulence properties of a transversely oscillating flow induced by a fluidic oscillator are studied in a gravity-driven water tunnel. A planar jet is guided to impinge a specially designed crescent surface of a target blockage that is enclosed in a cavity of a fluidic oscillator. The geometric configuration of the cavity transforms the inherent stability characteristics of the jet from convective instability to absolute instability, so that the jet precedes the persistent back and forth swinging in the cavity. The swinging jet is subsequently directed through two passages and issued alternatively out of the fluidic oscillator. Two short plates are installed near the exits of the alternatively issuing pulsatile jets to deflect the jets toward the central axis. The deflected jets impinge with each other and form a pair of counter-rotating vortices in the near wake of the oscillator with a stagnation point at the impingement point. The stagnation point of the counter-rotating vortex pair moves back and forth transversely because of the phase difference existing between the two issued jets. The merged flow evolving from the counter-rotating vortices formed by the impingement of the two pulsatile jets therefore presents complex behavior of transverse oscillation. The topological models corresponding to the flow evolution are constructed to illustrate the oscillation process of the oscillating flow. Significant momentum dispersion and large turbulence intensity are induced by the transverse oscillation of the merged flow. The statistical turbulence properties show that the Lagrangian integral time and length scales of the turbulence eddies (the fine-scale structure) produced in the oscillating flow are drastically reduced.

Large-eddy simulations and lidar measurements of vortex-pair breakup in aircraft wakes

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 1439-1445 ◽  
Author(s):  
D. C. Lewellen ◽  
W. S. Lewellen ◽  
L. R. Poole ◽  
C. A. Hostetler ◽  
R. J. DeCoursey ◽  
...  
Keyword(s):  
Vortex Pair ◽  
Large Eddy Simulations ◽  
Large Eddy ◽  
Lidar Measurements

Slotted Orifice Plate Flow Meter

2010 ◽  
Vol 3 (2) ◽  
pp. 149-153
Author(s):  
Ramraj H. Sundararaj ◽  
Abhijit Kushari
Keyword(s):  
Orifice Plate ◽  
Flow Meter

The Coriolis mass flow meter as a volume meter for the custody transfer in liquid hydrocarbons logistics

2019 ◽  
Vol 90 ◽  
pp. 311-318 ◽  
Author(s):  
A. García-Berrocal ◽  
C. Montalvo ◽  
P. Carmona ◽  
J. Blázquez
Keyword(s):  
Mass Flow ◽  
Liquid Hydrocarbons ◽  
Flow Meter ◽  
Coriolis Mass Flow Meter
Sign in / Sign up

Export Citation Format

Share Document