scholarly journals Nonlinear acoustic scattering from trapped gas bubbles in sandy sediments

1995 ◽  
Vol 98 (5) ◽  
pp. 2978-2978
Author(s):  
Frank A. Boyle ◽  
Nicholas P. Chotiros
Keyword(s):  
Acoustic Scattering ◽  
Gas Bubbles ◽  
Nonlinear Acoustic ◽  
Trapped Gas ◽  
Sandy Sediments

Bistatic acoustic scattering from trapped gas bubbles in sandy sediments

1994 ◽  
Vol 96 (5) ◽  
pp. 3219-3219
Author(s):  
Frank A. Boyle ◽  
Nicholas P. Chotiros
Keyword(s):  
Acoustic Scattering ◽  
Gas Bubbles ◽  
Trapped Gas ◽  
Sandy Sediments

Dynamic Characterization of a Valveless Micropump Considering Entrapped Gas Bubbles

2013 ◽  
Vol 135 (9) ◽  
Author(s):  
Songjing Li ◽  
Jixiao Liu ◽  
Dan Jiang
Keyword(s):  
Numerical Simulation ◽  
Theoretical Model ◽  
Experimental Studies ◽  
Gas Bubbles ◽  
Chamber Pressure ◽  
Dynamic Characterization ◽  
Valveless Micropump ◽  
Performance Deterioration ◽  
Trapped Gas

Unexpected gas bubbles in microfluidic devices always bring the problems of clogging, performance deterioration, and even device functional failure. For this reason, the aim of this paper is to study the characterization variation of a valveless micropump under different existence conditions of gas bubbles based on a theoretical modeling, numerical simulation, and experiment. In the theoretical model, we couple the vibration of piezoelectric diaphragm, the pressure drop of the nozzle/diffuser and the compressibility of working liquid when gas bubbles are entrapped. To validate the theoretical model, numerical simulation and experimental studies are carried out to investigate the variation of the pump chamber pressure influenced by the gas bubbles. Based on the numerical simulation and the experimental data, the outlet flow rates of the micropump with different size of trapped gas bubbles are calculated and compared, which suggests the influence of the gas bubbles on the dynamic characterization of the valveless micropump.

Slow viscous flow near a superhydrophobic surface with trapped gas bubbles

PAMM ◽  
2017 ◽  
Vol 17 (1) ◽  
pp. 651-652
Author(s):  
Aleksei Ageev ◽  
Irina Golubkina ◽  
Alexander Osiptsov
Keyword(s):  
Viscous Flow ◽  
Superhydrophobic Surface ◽  
Gas Bubbles ◽  
Slow Viscous Flow ◽  
Trapped Gas

Nonlinear acoustic scattering from a gassy poroelastic seabed

1998 ◽  
Vol 103 (3) ◽  
pp. 1328-1336 ◽  
Author(s):  
Frank A. Boyle ◽  
Nicholas P. Chotiros
Keyword(s):  
Acoustic Scattering ◽  
Nonlinear Acoustic ◽  
Poroelastic Seabed

scholarly journals Direct measurement of trapped gas bubbles by capillarity on the pore scale

2009 ◽  
Vol 1 (1) ◽  
pp. 3189-3196 ◽  
Author(s):  
Tetsuya Suekane ◽  
Nguyen Hoan Thanh ◽  
Takuya Matsumoto ◽  
Masumi Matsuda ◽  
Masanori Kiyota ◽  
...  
Keyword(s):  
Direct Measurement ◽  
Gas Bubbles ◽  
Pore Scale ◽  
Trapped Gas

Direct Observation of Trapped Gas Bubbles by Capillarity in Sandy Porous Media

2009 ◽  
Vol 82 (1) ◽  
pp. 111-122 ◽  
Author(s):  
Tetsuya Suekane ◽  
Na Zhou ◽  
Takahiro Hosokawa ◽  
Takuya Matsumoto
Keyword(s):  
Porous Media ◽  
Direct Observation ◽  
Gas Bubbles ◽  
Trapped Gas

Raman investigations on laser-trapped gas bubbles

1997 ◽  
Vol 277 (4) ◽  
pp. 331-334 ◽  
Author(s):  
M. Lankers ◽  
J. Popp ◽  
G. Rössling ◽  
W. Kiefer
Keyword(s):  
Gas Bubbles ◽  
Trapped Gas
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