Bubble Growth and Collapse in Liquid Nitrogen

1968 ◽  
Vol 90 (1) ◽  
pp. 22-26 ◽  
Author(s):  
H. C. Hewitt ◽  
J. D. Parker
Keyword(s):  
Experimental Data ◽  
Liquid Nitrogen ◽  
Bubble Growth ◽  
Theoretical Work ◽  
Nitrogen Pressure ◽  
Superheated Liquid ◽  
Bubble Collapse ◽  
Vapor Bubbles ◽  
Subcooled Liquid ◽  
Nitrogen Bubble

Experimental data on bubble growth in superheated liquid nitrogen, bubble collapse in subcooled liquid nitrogen, and bubble growth with decreasing liquid nitrogen pressure are compared to the theoretical solutions obtained for noncryogens. Vapor bubbles in liquid nitrogen were found to behave quite similarly to vapor bubbles in noncryogens. This paper provides experimental data in two areas where additional theoretical work is needed: Bubble collapse in subcooled liquid, and bubble growth with decreasing pressure.

Collective Effects on the Growth of Vapor Bubbles in a Superheated Liquid

1984 ◽  
Vol 106 (4) ◽  
pp. 486-490 ◽  
Author(s):  
G. L. Chahine ◽  
H. L. Liu
Keyword(s):  
Collective Behavior ◽  
Bubble Growth ◽  
Theoretical Study ◽  
Pressure Field ◽  
Bubble Radius ◽  
Significant Inhibition ◽  
Collective Effects ◽  
Superheated Liquid ◽  
Vapor Bubbles ◽  
Bubble Interaction

The problem of the growth of a spherical isolated bubble in a superheated liquid has been extensively studied. However, very little work has been done for the case of a cloud of bubbles. The collective behavior of the bubbles departs considerably from that of a single isolated bubble, due to the cumulative modification of the pressure field from all other bubbles. This paper presents a theoretical study on bubble interaction in a superheated liquid during the growth stage. The solution is sought in terms of matched asymptotic expansions in powers of ε, the ratio between rb0, a characteristic bubble radius and l0, the interbubble distance. Numerical results show a significant inhibition of the bubble growth rate due to the presence of interacting bubbles. In addition, the temperature at the bubble wall decreases at a slower rate. Consequently, the overall heat exchange during the bubble growth is reduced.

Heat Transfer From Spheres Into Subcooled Liquid Sodium During Forced Convection

1968 ◽  
Vol 90 (4) ◽  
pp. 394-398 ◽  
Author(s):  
L. C. Witte ◽  
L. Baker ◽  
D. R. Haworth
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
High Temperature ◽  
Forced Convection ◽  
Atmospheric Pressure ◽  
Liquid Sodium ◽  
Superheated Liquid ◽  
Subcooled Liquid ◽  
Transfer Rates

Heat transfer rates from 1/2-in-dia spheres were measured as the sphere moved through a pool of subcooled liquid sodium. Measurements were made at atmospheric pressure and with sodium at 572 and 842 deg F. Sphere temperatures ranged up to 3600 deg F. Heat transfer rates up to 3.6 × 107 Btu/hr sq ft were calculated from the experimental data. It was shown in this study that large amounts of subcooling in the liquid sodium and motion of the sphere tend to prevent the formation of vapor at the surface of high-temperature spheres. These experimental data were correlated by a theory in which it was assumed that highly superheated liquid sodium would be in contact with a high-temperature sphere.

scholarly journals Impact effects due to hot vapour bubble collapse in subcooled liquid

2020 ◽  
Vol 1652 ◽  
pp. 012019
Author(s):  
T C Le ◽  
V I Melikhov ◽  
O I Melikhov ◽  
S E Yakush
Keyword(s):  
Bubble Collapse ◽  
Vapour Bubble ◽  
Subcooled Liquid

Cavitation flow instability of subcooled liquid nitrogen in converging–diverging nozzles

Cryogenics ◽  
2012 ◽  
Vol 52 (1) ◽  
pp. 35-44 ◽  
Author(s):  
Katsuhide Ohira ◽  
Tadashi Nakayama ◽  
Takayoshi Nagai
Keyword(s):  
Liquid Nitrogen ◽  
Flow Instability ◽  
Cavitation Flow ◽  
Subcooled Liquid

scholarly journals On the statics and dynamics of fully confined bubbles

2017 ◽  
Vol 827 ◽  
pp. 194-224 ◽  
Author(s):  
Olivier Vincent ◽  
Philippe Marmottant
Keyword(s):  
Bubble Growth ◽  
Liquid Velocity ◽  
Plant Cells ◽  
Natural Oscillation ◽  
Bubble Collapse ◽  
Statics And Dynamics ◽  
Stability Phase Diagram ◽  
Oscillation Dynamics ◽  
Solid Walls ◽  
Gas Compressibility

We investigate theoretically the statics and dynamics of bubbles in fully confined liquids, i.e. in liquids surrounded by solid walls in all directions of space. This situation is found in various natural and technological contexts (geological fluid inclusions, plant cells and vessels, soil tensiometers, etc.), where such bubbles can pre-exist in the trapped liquid or appear by nucleation (cavitation). We focus on volumetric deformations and first establish the potential energy of fully confined bubbles as a function of their radius, including contributions from gas compressibility, surface tension, liquid compressibility and elastic deformation of the surrounding solid. We evaluate how the Blake threshold of unstable bubble growth is modified by confinement and we also obtain an original bubble stability phase diagram with a regime of liquid superstability (spontaneous bubble collapse) for strong confinements. We then calculate the liquid velocity field associated with radial deformations of the bubble and strain in the solid, and we predict large deviations in the kinematics compared to bubbles in extended liquids. Finally, we derive the equations governing the natural oscillation dynamics of fully confined bubbles, extending Minnaert’s formula and the Rayleigh–Plesset equation, and we show that the compressibility of the liquid as well as the elasticity of the walls can result in ultra-fast bubble radial oscillations and unusually quick damping. We find excellent agreement between the predictions of our model and recent experimental results.

The Origin of the Dynamic Growth of Vapor Bubbles Related to Vapor Explosions

1998 ◽  
Vol 120 (1) ◽  
pp. 174-182 ◽  
Author(s):  
H. S. Lee ◽  
H. Merte
Keyword(s):  
Heat Transfer ◽  
Bubble Growth ◽  
Hydrodynamic Instability ◽  
Early Growth ◽  
Instability Mechanism ◽  
Vapor Bubbles ◽  
Vapor Interface ◽  
Vapor Explosions ◽  
Dynamic Growth ◽  
Classical Hydrodynamic

An explosive type of vapor bubble growth was observed during pool boiling experiments in microgravity using R-113. Photographs reveal that the liquid-vapor interface of the explosive bubbles are wrinkled and corrugated, leading to the conclusion that some type of instability mechanism is acting. The classical hydrodynamic instability theories of Landau and Rayleigh-Taylor do not consider the effect of heat transfer, at the interface, which is believed to be responsible for the observed instability of the evaporating surface. This was confirmed by the mechanisms proposed by Prosperetti and Plesset, combined with a model of the early growth of spherical vapor bubbles.

Numerical Solution of Thermal and Fluid Flow With Phase Change by VOF Method

2000 ◽  
Author(s):  
Hidemi Shirakawa ◽  
Yasuyuki Takata ◽  
Takehiro Ito ◽  
Shinobu Satonaka
Keyword(s):  
Fluid Flow ◽  
Free Surface ◽  
Phase Change ◽  
Calculation Result ◽  
Bubble Growth ◽  
Present Method ◽  
Spherical Shape ◽  
Superheated Liquid ◽  
One Dimensional ◽  
Solidification Problem

Abstract Numerical method for thermal and fluid flow with free surface and phase change has been developed. The calculation result of one-dimensional solidification problem agrees with Neumann’s theoretical value. We applied it to a bubble growth in superheated liquid and obtained the result that a bubble grows with spherical shape. The present method can be applicable to various phase change problems.

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