scholarly journals Dynamics of a Gas Bubble Moving in an Inviscid Liquid Subjected to a Sudden Pressure Change

1969 ◽  
Vol 40 (4) ◽  
pp. 1763-1768 ◽  
Author(s):  
Hsu‐Chieh Yeh ◽  
Wen‐Jei Yang
Keyword(s):  
Pressure Change ◽  
Gas Bubble ◽  
Inviscid Liquid

The initial motion of a gas bubble formed in an inviscid liquid

1963 ◽  
Vol 17 (03) ◽  
pp. 321 ◽  
Author(s):  
J. K. Walters ◽  
J. F. Davidson
Keyword(s):  
Gas Bubble ◽  
Inviscid Liquid ◽  
Initial Motion

About nonlinear nonspherical oscillations of a gas bubble in an incompressible ideal liquid

2003 ◽  
Vol 3 ◽  
pp. 178-194
Author(s):  
M.A. Ilgamov ◽  
E.Sh. Nasibullaeva ◽  
D.V. Kondtratyev
Keyword(s):  
Parametric Analysis ◽  
Applied Pressure ◽  
Pressure Change ◽  
Ideal Liquid ◽  
System Of Equations ◽  
Pressure Amplitude ◽  
Gas Bubble ◽  
Initial Radius ◽  
Initial Deviation ◽  
Incompressible Ideal Fluid

A comparative parametric analysis of a system of equations describing the nonspherical oscillations of a gas bubble in an incompressible ideal fluid is performed. The terms up to a second order of smallness in the amplitude of the surface perturbation are taking into account. Numerical calculations of this system of equations for various parameters (initial deviation from the sphere, pressure amplitude, initial radius) and for various laws of the applied pressure change are carried out.

scholarly journals Gas bubble dynamics in soft materials

Soft Matter ◽  
2015 ◽  
Vol 11 (1) ◽  
pp. 202-210 ◽  
Author(s):  
J. M. Solano-Altamirano ◽  
John D. Malcolm ◽  
Saul Goldman
Keyword(s):  
Liquid Medium ◽  
Elastic Medium ◽  
Bubble Dynamics ◽  
Gas Bubbles ◽  
Soft Materials ◽  
Gas Bubble ◽  
Inviscid Liquid

Gas bubbles dissolve slower and expand faster in a soft solid elastic medium, relative to a simple (inviscid) liquid medium.

Heart Rate Signal Decomposition

2000 ◽  
Vol 39 (02) ◽  
pp. 200-203
Author(s):  
H. Mizuta ◽  
K. Yana
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Pressure Change ◽  
Normal Subjects ◽  
Signal Decomposition ◽  
Large Individual ◽  
Heart Rate Fluctuations ◽  
Type Pattern ◽  
Signal Cancellation ◽  
Pressure Changes

Abstract:This paper proposes a method for decomposing heart rate fluctuations into background, respiratory and blood pressure oriented fluctuations. A signal cancellation scheme using the adaptive RLS algorithm has been introduced for canceling respiration and blood pressure oriented changes in the heart rate fluctuations. The computer simulation confirmed the validity of the proposed method. Then, heart rate fluctuations, instantaneous lung volume and blood pressure changes are simultaneously recorded from eight normal subjects aged 20-24 years. It was shown that after signal decomposition, the power spectrum of the heart rate showed a consistent monotonic 1/fa type pattern. The proposed method enables a clear interpretation of heart rate spectrum removing uncertain large individual variations due to the respiration and blood pressure change.

MULTIPLE-SCALE AND NUMERICAL ANALYSES FOR THE NONLINEAR OSCILLATIONS OF A GAS BUBBLE SURROUNDED BY A MAXWELL'S FLUID

2019 ◽  
Vol 46 (3) ◽  
pp. 261-275
Author(s):  
César Yepes ◽  
Jorge Naude ◽  
Federico Mendez ◽  
Margarita Navarrete ◽  
Fátima Moumtadi
Keyword(s):  
Nonlinear Oscillations ◽  
Multiple Scale ◽  
Numerical Analyses ◽  
Gas Bubble
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