Vapor Explosions: Modeling and Experimental Analysis in Both Small- and Large-Scale Setups: A Review

JOM ◽  
2021 ◽  
Author(s):  
Arne Simons ◽  
Inge Bellemans ◽  
Tijl Crivits ◽  
Kim Verbeken
Keyword(s):  
Experimental Analysis ◽  
Large Scale ◽  
Vapor Explosions

Study of Large-Scale Vapor Explosions in Interaction of Fusible Metals with Water

2001 ◽  
Vol 32 (7-8) ◽  
pp. 7
Author(s):  
G. A. Kapinos ◽  
Yu. P. Meleshko ◽  
V. I. Nalivaev ◽  
O. V. Remizov ◽  
S. R. Kharitonov
Keyword(s):  
Large Scale ◽  
Vapor Explosions

Nucleation Processes in Large Scale Vapor Explosions

1979 ◽  
Vol 101 (2) ◽  
pp. 280-287 ◽  
Author(s):  
R. E. Henry ◽  
H. K. Fauske
Keyword(s):  
Large Scale ◽  
Interface Temperature ◽  
Liquid Droplets ◽  
Contact Interface ◽  
Vapor Cavity ◽  
Spontaneous Nucleation ◽  
System Pressure ◽  
Nucleation Model ◽  
Vapor Explosions ◽  
Cold Liquid

A spontaneous nucleation model is proposed for the mechanisms which lead to explosive boiling in the free contacting mode. The model considers that spontaneous nucleation cannot occur until the thermal boundary layer is sufficiently thick to support a critical size vapor cavity, and that significant bubble growth requires an established pressure gradient in the cold liquid. This results in a prediction that, for an interface temperature above the spontaneous nucleation limit, large cold liquid droplets will remain in film boiling due to coalescence of vapor nuclei, whereas smaller droplets will be captured by the hot liquid surface and rapidly vaporize, which agrees with the experimental observations. The model also predicts that explosions are eliminated by an elevated system pressure or a supercritical contact interface temperature, and this is also in agreement with experimental data.

scholarly journals Theoretical and Experimental Analysis of Nb3Sn Strand Buckling in Large Scale CIC Conductor

2014 ◽  
Vol 9 (0) ◽  
pp. 3405063-3405063 ◽  
Author(s):  
Hidetoshi KUDOH ◽  
Tsuyoshi YAGAI ◽  
Kei HAMANO ◽  
Kazuki YOSHIDA ◽  
Shinji HAMAGUCHI ◽  
...  
Keyword(s):  
Experimental Analysis ◽  
Large Scale

Vibration Characteristics Analysis of Large Dismountable Out-Moving Jaw Crusher

2014 ◽  
Vol 472 ◽  
pp. 27-30
Author(s):  
Yong Jiang
Keyword(s):  
Natural Frequency ◽  
Experimental Analysis ◽  
Vibration Analysis ◽  
Large Scale ◽  
Vibration Characteristics ◽  
Vibration System ◽  
Working Process ◽  
Jaw Crusher ◽  
Characteristics Analysis ◽  
Working Frequency

The working process of the out-moving jaw crusher is complex vibration system with multeity freedoms, it is vibration Characteristics directly affect the performance of the machine. The thesis put PWD120150 as research target, experimental analysis was conduct to the typical vibration Characteristics, the natural frequency and the working frequency of the machine and key components was obtained, which provided references for the design of avoiding mechanical resonance, and provided technical reference to the vibration analysis of the large scale equipment.

scholarly journals Experimental Analysis of Horizontal Turbulence of Flow over Flat and Deformed Beds

2015 ◽  
Vol 62 (3-4) ◽  
pp. 77-99 ◽  
Author(s):  
Donatella Termini
Keyword(s):  
Shear Stress ◽  
Kinetic Energy ◽  
Turbulent Kinetic Energy ◽  
Experimental Analysis ◽  
Large Scale ◽  
Laboratory Experiments ◽  
Reynolds Shear Stress ◽  
Turbulent Structures ◽  
Quadrant Method ◽  
Initial Sequence

AbstractLaboratory experiments in a straight flume were carried out to examine the evolution of large-scale horizontal turbulent structures under flat-bed and deformed-bed conditions. In this paper, the horizontal turbulence of flow under these conditions is analyzed and compared. The conditioned quadrant method is applied to verify the occurrence of turbulent events. The distributions of horizontal Reynolds shear stress and turbulent kinetic energy are also presented and discussed. Results show the occurrence of an “initial” sequence of horizontal vortices whose average spatial length scales with the channel width. Under deformed-bed conditions, this spatial length does not change.

scholarly journals Experimental Analysis of the Eye Morphogenesis in Mammals

Development ◽  
1960 ◽  
Vol 8 (3) ◽  
pp. 349-368
Author(s):  
O. G. Stroeva
Keyword(s):  
Experimental Analysis ◽  
Large Scale ◽  
Regenerative Capacity ◽  
Lower Vertebrates ◽  
Experimental Interference ◽  
Development Proceeds ◽  
Eye Morphogenesis

Owing to the great difficulties of experimental interference with the embryogenesis of mammals, the morphogenetic potentialities of the mammalian eye remain almost unstudied up to the present. The elucidation of whether the developing mammalian eye obeys the same rules that have been established for the lower vertebrates, or whether its development proceeds in another way, is interesting in many respects. It might allow us to answer a number of questions, e.g. how stable are the morphogenetic interactions within the vertebrates which result in the formation of homologous organs? How do the morphogenetic potentials of the parts of an organ alter in the course of evolution? Light might also be thrown on the development or loss of regenerative capacity in various forms. Lastly, we may find out to what extent the experiments on lower vertebrates, easily carried out on a large scale, are of use for the understanding of those processes which cause regularly recurring inborn malformations in man.

Modal Test of Shanghai Metro Line 1 Based on Environmental Stochastic Excitation

2013 ◽  
Vol 278-280 ◽  
pp. 771-776
Author(s):  
Chun Xia Chen ◽  
Yu Ming Zhang ◽  
Yong Hua Yang
Keyword(s):  
Dynamic Analysis ◽  
Experimental Analysis ◽  
Large Scale ◽  
Natural Frequencies ◽  
Soft Soil ◽  
Stochastic Excitation ◽  
Response Data ◽  
Modal Test ◽  
Tunnel System ◽  
Shanghai Metro

Based on environmental stochastic excitation, a large scale modal test was conducted at an important section of Shanghai Metro Line 1. According to the collected time response data, the natural frequencies of the soft soil-tunnel system were obtained by means of theoretical and experimental analysis, which can provide calculation parameters for further relevant dynamic analysis.

Two-Phase Description of Hydrodynamic Fragmentation Processes Within Thermal Detonation Waves

1984 ◽  
Vol 106 (4) ◽  
pp. 728-734 ◽  
Author(s):  
M. Bu¨rger ◽  
D. S. Kim ◽  
W. Schwalbe ◽  
H. Unger ◽  
H. Hohmann ◽  
...  
Keyword(s):  
Large Scale ◽  
Flow Model ◽  
Salt Water ◽  
Capillary Waves ◽  
Detonation Waves ◽  
Two Phase ◽  
Fragmentation Behavior ◽  
Vapor Explosions ◽  
Fragmentation Processes ◽  
Hydrodynamic Fragmentation

Large-scale vapor explosions are described by thermal detonation waves, proceeding through a fuel-coolant mixture. A two-phase flow model is used for modeling the processes inside a wave. One phase is formed by the drops of melt and the other by the coolant and the fragments. For the interfacial transfer relations between the phases new descriptions are presented, which extend earlier thermal detonation models. The fragmentation behavior can be calculated from two different models, one based on deformation breakup and Taylor instability and another describing fragmentation by stripping of capillary waves induced by shear flow instabilities. In addition to the time development of the fragmented mass, the models give also the actual sizes of the fragments. Results of the fragmentation models are compared with the experiments on hydrodynamic fragmentation of single drops of gallium in water flows. For vapor explosion experiments with tin-water and salt-water systems the detonation cases are determined using the wave stripping model.

Sign in / Sign up

Export Citation Format

Share Document