scholarly journals Chaotic characteristics of gas bubble motion in acoustic field

2011 ◽  
Vol 60 (10) ◽  
pp. 104302
Author(s):  
Shen Zhuang-Zhi ◽  
Lin Shu-Yu
Keyword(s):  
Acoustic Field ◽  
Gas Bubble ◽  
Bubble Motion

Combined experimental and theoretical investigation of the gas bubble motion in an acoustic field

2018 ◽  
Vol 40 ◽  
pp. 480-487 ◽  
Author(s):  
Xiaojian Ma ◽  
Tianyu Xing ◽  
Biao Huang ◽  
Qiuhe Li ◽  
Yifei Yang
Keyword(s):  
Theoretical Investigation ◽  
Acoustic Field ◽  
Gas Bubble ◽  
Bubble Motion

scholarly journals Volume oscillation and acoustical scattering of a gas bubble

2019 ◽  
Vol 283 ◽  
pp. 06002
Author(s):  
Yan Ma ◽  
Tao Ma ◽  
Feiyan Zhao
Keyword(s):  
Cross Section ◽  
Acoustic Field ◽  
Driving Pressure ◽  
Single Bubble ◽  
Gas Bubble ◽  
Scattering Cross ◽  
Resonance Response ◽  
Linear Resonance ◽  
Volume Oscillation ◽  
Big Bubble

The exact solution of a gas bubble’ volume was obtained based on volume oscillation of a gas bubble. The volume pulsation, acoustic impedance, scattering pressure of a gas bubble, acoustical power of scattering and acoustical scattering cross section of a single bubble are researched in a small amplitude acoustic field. The results show that a big bubble oscillates more violently than that of a small bubble in a weak acoustic field if the linear resonance does not happen. The occurrence of a linear resonance response of a single bubble leads to the volume oscillation and the scattering ability of a gas bubble become stronger. Additionally, the scattering cross section does not depend on the driving pressure. The amplitude of scattering pressure of a big bubble can reach the magnitude compared to the driving pressure when the resonance response occurs.

Effect of diffusion on the evolution of a gas bubble in an acoustic field

1975 ◽  
Vol 28 (4) ◽  
pp. 415-418
Author(s):  
L. E. Kolesnikov ◽  
V. V. Sobolev
Keyword(s):  
Acoustic Field ◽  
Gas Bubble

Growth of gas bubbles in the biotissues with convective acceleration

2014 ◽  
Vol 07 (06) ◽  
pp. 1450072 ◽  
Author(s):  
S. A. Mohammadein ◽  
K. G. Mohamed
Keyword(s):  
Concentration Distribution ◽  
Bubble Dynamics ◽  
Ambient Pressure ◽  
Growth Stages ◽  
Gas Bubble ◽  
Bubble Motion ◽  
Dissolved Gas ◽  
Diffusion Limited ◽  
The Mathematical Model ◽  
Dominant Parameter

This paper presents formulae and explanation about the growth of a convective gas bubble in the blood and other tissues of divers who surface too quickly, concentration distribution around the growing bubble is also presented. The formulae are valid all over the growth stages, i.e. under variable ambient pressure while the diver is ascending, and under constant ambient pressure at diving stops or at sea level. The mathematical model is solved analytically by using the method of combined variables. The growth process is affected by tissue diffusivity, concentration constant and the initial void fraction, which is the dominant parameter. Results show that, the time of the complete growth, in the convective growth model, is shorter than those earlier presented by Mohammadein and Mohamed [Concentration distribution around a growing gas bubble in tissue, Math. Biosci.225(1) (2010) 11–17] and Srinivasan et al. [Mathematical models of diffusion-limited gas bubble dynamics in tissue, J. Appl. Physiol.86 (1999) 732–741] for the growth of a stationary gas bubble, this explains the effect of bubble motion on consuming the oversaturated dissolved gas from the tissue into growing bubble which leads to increment in the growth rate to be more than those presented in the previous stationary models.

Gas Bubble Motion Artifact in MDCT

2008 ◽  
Vol 190 (2) ◽  
pp. 294-299 ◽  
Author(s):  
Franklin Liu ◽  
Carlos Cuevas ◽  
Albert A. Moss ◽  
Orpheus Kolokythas ◽  
Theodore J. Dubinsky ◽  
...  
Keyword(s):  
Motion Artifact ◽  
Gas Bubble ◽  
Bubble Motion

scholarly journals Finite-sized gas bubble motion in a blood vessel: Non-Newtonian effects

2008 ◽  
Vol 78 (3) ◽  
Author(s):  
Karthik Mukundakrishnan ◽  
Portonovo S. Ayyaswamy ◽  
David M. Eckmann
Keyword(s):  
Blood Vessel ◽  
Gas Bubble ◽  
Bubble Motion
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