Journal ArticleDOI
Waves in liquids with vapour bubbles
Reads0
Chats0
TLDR
In this paper, an analysis of the microscopic fields of physical parameters is aimed at closing the system of equations for averaged characteristics, and an elliptic equation is obtained to determine the field of the mixture average pressure at an arbitrary time through known fields of the remaining quantities.Abstract:
An investigation of wave processes in liquids with vapour bubbles with interphase heat and mass transfer is presented. A single-velocity two-pressure model is used which takes into account both the liquid radial inertia due to medium volume changes, and the temperature distribution around the bubbles. An analysis of the microscopic fields of physical parameters is aimed at closing the system of equations for averaged characteristics. The original system of differential equations of the model is modified to a form suitable for numerical integration. An elliptic equation is obtained to determine the field of the mixture average pressure at an arbitrary time through the known fields of the remaining quantities. The existence of the steady structure of shock waves, either monotonic or oscillatory, is proved. The effect of the initial conditions, shock strength, volume fraction, and dispersity of the vapour phase and of the thermophysical properties of the phases on shock-wave structure and relaxation time is studied. The influence of nonlinear, dispersion and dissipative effects on the wave evolution is also investigated. The shock adiabat for reflected waves is analysed. The results obtained have proved that the interphase heat and mass transfer determined by the thermal diffusivity of the liquid greatly influences the wave structure. The possible enhancement of disturbances in the region of their initiation is shown. The model has been tested for suitability and the results of calculations have been compared with experimental data.read more
Citations
More filters
Journal ArticleDOI
The Dynamics of Vapor Bubbles in Acoustic Pressure Fields
Y. Hao,Andrea Prosperetti +1 more
TL;DR: In this paper, the authors examined numerically the validity of some asymptotic-theory predictions such as the existence of two resonant radii and a limit size for a given sound amplitude and frequency.
Journal ArticleDOI
Numerical simulation of shock propagation in a polydisperse bubbly liquid
TL;DR: The effect of distributed bubble nuclei sizes on shock propagation in a bubble liquid is numerically investigated in this article, where an ensemble-averaged technique is employed to derive the statistically averaged conservation laws for polydisperse bubbly flows.
Book
Suspension Acoustics: An Introduction to the Physics of Suspensions
TL;DR: In this article, the two phase model is used to model sound propagation in suspensions, and a conservation equation is proposed to describe the physics of the two-phase model of sound propagation.
Journal ArticleDOI
Shock propagation through a bubbly liquid in a deformable tube
Keita Ando,Keita Ando,Toshiyuki Sanada,Toshiyuki Sanada,Kazuaki Inaba,Kazuaki Inaba,Jason Damazo,Joseph E. Shepherd,Tim Colonius,Christopher E. Brennen +9 more
TL;DR: In this paper, a free-falling steel projectile impacts the top of an air/water mixture in a polycarbonate tube, and stress waves in the tube material and pressure on the tube wall are measured.
Journal ArticleDOI
Experimental and computational studies of shock wave-to-bubbly water momentum transfer
S. M. Frolov,S. M. Frolov,K. A. Avdeev,V. S. Aksenov,V. S. Aksenov,A. A. Borisov,A. A. Borisov,F. S. Frolov,Igor O. Shamshin,Igor O. Shamshin,R. R. Tukhvatullina,Branislav Basara,W. Edelbauer,K. Pachler +13 more
TL;DR: In this article, the authors have shown that as the initial gas volume fraction in water increases from 0 to 0.3 the momentum imparted in bubbly water by SWs increases monotonically, gradually leveling off at an air volume fraction of about 0.30.
References
More filters
Journal ArticleDOI
Bubble Dynamics and Cavitation
TL;DR: The first analysis of a problem in cavitation and bubble dynamics was made by Rayleigh (1917), who solved the problem of the collapse of an empty cavity in a large mass of liquid.
Journal ArticleDOI
One-Dimensional Flow of Liquids Containing Small Gas Bubbles
TL;DR: The literature on the subject deals therefore for a large part with theoretical and experimental studies of the various aspects of propaga- tion of pressure waves of small amplitude in bubbly liquids.
Journal ArticleDOI
Spatial averaging in the mechanics of heterogeneous and dispersed systems
TL;DR: In this article, a spatial averaging of the equations describing two single-phase media is separately considered regarding the volumes occupied by either phase with allowance for the boundary conditions on phase interfaces.
Journal ArticleDOI
Dynamics, heat and mass transfer of vapour-gas bubbles in a liquid
TL;DR: In this paper, a nonlinear problem of thermal, mass and dynamic interaction between a vapour-gas bubble and a liquid is considered with account for temperature nonuniformity in the bubble and interdiffusion of the vapour gas mixture components.
Journal ArticleDOI
Relaxation effects caused by relative motion on shock waves in gas-bubble/liquid mixtures
L. Noordzij,L. van Wijngaarden +1 more
TL;DR: In this paper, the authors observed a gradual change in the structure of a gas-dynamic shock wave passing through a long tube of bubbly liquid, which they attributed to the motion of the bubbles relative to the liquid.