scholarly journals Determination of the piston velocity for water-air interfaces using flux chambers, acoustic Doppler velocimetry, and IR imaging of the water surface

2013 ◽  
Vol 118 (2) ◽  
pp. 770-782 ◽  
Author(s):  
Magnus Gålfalk ◽  
David Bastviken ◽  
Sam Fredriksson ◽  
Lars Arneborg
Keyword(s):  
Water Surface ◽  
Doppler Velocimetry ◽  
Piston Velocity ◽  
Ir Imaging ◽  
Acoustic Doppler Velocimetry ◽  
Flux Chambers ◽  
Air Interfaces

Experimental Determination of Acceleration of Explosively Driven Metal by Photonic Doppler Velocimetry in the Process of Explosive Welding

2018 ◽  
Vol 43 (5) ◽  
pp. 479-487 ◽  
Author(s):  
Jindrich Kucera ◽  
Aline Cardoso Anastacio ◽  
Petr Nesvadba ◽  
Martin Kunzel ◽  
Jakub Selesovsky ◽  
...  
Keyword(s):  
Experimental Determination ◽  
Explosive Welding ◽  
Doppler Velocimetry ◽  
Photonic Doppler Velocimetry

Experimental Study of the Type VI Stilling Basin Performance

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
Seyed Sobhan Aleyasin ◽  
Nima Fathi ◽  
Peter Vorobieff
Keyword(s):  
Experimental Study ◽  
Kinetic Energy ◽  
River Flow ◽  
Doppler Velocimetry ◽  
Huge Amount ◽  
Stilling Basin ◽  
Stilling Basins ◽  
Turbulence Data ◽  
Flow Turbulence ◽  
Acoustic Doppler Velocimetry

Understanding the estuarine turbulent flow from dams, channels, and pipes, as well as the river flow are very important due to the potential to cause damage to the bed of the river or channel and cause scouring of structures such as the saddles of bridges, because of the huge amount of the kinetic energy carried by the flow. One of the most efficient yet simple ways to dissipate this energy is to install a stilling basin at the discharge point to calm the flow. Turbulence data were recorded using acoustic Doppler velocimetry (ADV) for type VI2 of stilling basins for pipe outlets. During the study, various splitters and a cellular baffle were placed in the stilling basin, and the baffle locations were changed to assess the effect on the energy dissipation. Velocity at several locations in the basin was measured for different Froude numbers to investigate the effect of flow rate. Based on the findings of the experiments, several suggestions regarding the efficiency and geometry of stilling basins were made.

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