Theory of regular and mach reflection of shock waves in a two-phase gas-liquid medium

1985 ◽  
Vol 20 (2) ◽  
pp. 332-334
Author(s):  
A. V. Voloshinov ◽  
A. D. Kovalev ◽  
G. P. Shindyapin
Keyword(s):  
Shock Waves ◽  
Liquid Medium ◽  
Mach Reflection ◽  
Two Phase

Attenuation of shock waves in a two-phase gas?Liquid medium

1974 ◽  
Vol 6 (5) ◽  
pp. 892-897 ◽  
Author(s):  
A. A. Borisov ◽  
B. E. Gel'fand ◽  
S. A. Gubin ◽  
S. M. Kogarko ◽  
O. V. Krivenko
Keyword(s):  
Shock Waves ◽  
Liquid Medium ◽  
Two Phase

Gas content factor in the interaction of shock waves of different intensity in a two-phase gas-liquid medium

1986 ◽  
Vol 21 (6) ◽  
pp. 996-998
Author(s):  
A. V. Voloshinov ◽  
A. D. Kovalev ◽  
G. P. Shindyapin
Keyword(s):  
Shock Waves ◽  
Liquid Medium ◽  
Gas Content ◽  
Two Phase ◽  
Interaction Of Shock Waves ◽  
Content Factor

Features of spatial shock-wave flows in vapor-gas-liquid mixtures

2014 ◽  
Vol 10 ◽  
pp. 27-31
Author(s):  
R.Kh. Bolotnova ◽  
U.O. Agisheva ◽  
V.A. Buzina
Keyword(s):  
Shock Wave ◽  
High Pressure ◽  
Shock Waves ◽  
Liquid Mixture ◽  
Liquid Mixtures ◽  
Pressure Vessels ◽  
Water Mixture ◽  
Two Dimensional ◽  
Nonstationary Processes ◽  
Two Phase

The two-phase model of vapor-gas-liquid medium in axisymmetric two-dimensional formulation, taking into account vaporization is constructed. The nonstationary processes of boiling vapor-water mixture outflow from high-pressure vessels as a result of depressurization are studied. The problems of shock waves action on filled by gas-liquid mixture volumes are solved.

Analysis of Transient Two-Phase Flow in Pressure Safety Valve Outlet Headers

2018 ◽  
Author(s):  
Maral Taghva ◽  
Lars Damkilde
Keyword(s):  
Steady State ◽  
Shock Waves ◽  
High Speed ◽  
Two Phase Flow ◽  
Safety Valve ◽  
Strong Shock ◽  
Flow Property ◽  
Phase Flow ◽  
Transient Pressure ◽  
Two Phase

To protect a pressurized system from overpressure, one of the most established strategies is to install a Pressure Safety Valve (PSV). Therefore, the excess pressure of the system is relieved through a vent pipe when PSV opens. The vent pipe is also called “PSV Outlet Header”. After the process starts, a transient two-phase flow is formed inside the outlet header consisting of high speed pressurized gas interacting with existing static air. The high-speed jet compresses the static air towards the end tail of the pipe until it is discharged to the ambiance and eventually, the steady state is achieved. Here, this transient process is investigated both analytically and numerically using the method of characteristics. Riemann’s solvers and Godunov’s method are utilized to establish the solution. Propagation of shock waves and flow property alterations are clearly demonstrated throughout the simulations. The results show strong shock waves as well as high transient pressure take place inside the outlet header. This is particularly important since it indicates the significance of accounting for shock waves and transient pressure, in contrast to commonly accepted steady state calculations. More precisely, shock waves and transient pressure could lead to failure, if the pipe thickness is chosen only based on conventional steady state calculations.

scholarly journals Experimental study on the behavior of the two phase flow shock waves occurring in the ejector refrigeration cycle

2016 ◽  
Vol 3 (6) ◽  
pp. 16-00255-16-00255 ◽  
Author(s):  
Haruyuki NISHIJIMA ◽  
Kyohei TSUCHII ◽  
Masafumi NAKAGAWA
Keyword(s):  
Experimental Study ◽  
Shock Waves ◽  
Two Phase Flow ◽  
Refrigeration Cycle ◽  
Phase Flow ◽  
Two Phase

scholarly journals Cultivation System Using Glass Beads Immersed in Liquid Medium Facilitates Studies of Streptomyces Differentiation

2005 ◽  
Vol 71 (6) ◽  
pp. 2848-2852 ◽  
Author(s):  
Liem D. Nguyen ◽  
Ladislava Kalachová ◽  
Jana Novotná ◽  
Martin Holub ◽  
Olga Kofroňová ◽  
...  
Keyword(s):  
Liquid Medium ◽  
Solid Phase ◽  
Morphological Differentiation ◽  
Glass Beads ◽  
Morphological Development ◽  
Natural Habitats ◽  
Two Phase ◽  
Cultivation System ◽  
Soil Clay ◽  
Posttranslation Modifications

ABSTRACT A two-phase cultivation system was developed which will enable studies of streptomycete differentiation by molecular biological and global techniques such as transcriptomics and proteomics. The system is based on a solid phase formed by glass beads corresponding to particles in soil, clay, or sand natural habitats of streptomycetes. The beads are immersed in a liquid medium that allows easy modification or replacement of nutrients and growth factors as well as radioactive labeling of proteins. Scanning electron microscopy was used to analyze morphological differentiation of streptomycetes on glass beads and two-dimensional protein electrophoresis to demonstrate the potential of the system for analyses of protein synthesis profiles during the developmental program. This system facilitates studies of differentiation including expression and posttranslation modifications of streptomycetes proteins, secondary metabolite biosynthesis, and morphological development.

Transition from regular to Mach reflection of shock waves Part 2. The steady-flow criterion

1982 ◽  
Vol 123 ◽  
pp. 155-164 ◽  
Author(s):  
H. G. Hornung ◽  
M. L. Robinson
Keyword(s):  
Shock Waves ◽  
Steady Flow ◽  
Mach Reflection ◽  
Strong Shock ◽  
Hysteresis Effect ◽  
Neumann Condition ◽  
Flow Transition ◽  
Von Neumann ◽  
Mach Numbers ◽  
Flow Criterion

It is shown experimentally that, in steady flow, transition to Mach reflection occurs at the von Neumann condition in the strong shock range (Mach numbers from 2.8 to 5). This criterion applies with both increasing and decreasing shock angle, so that the hysteresis effect predicted by Hornung, Oertel & Sandeman (1979) could not be observed. However, evidence of the effect is shown to be displayed in an unsteady experiment of Henderson & Lozzi (1979).

Numerical Simulation of Shock Waves through Combustible Two-Phase Media

1995 ◽  
pp. 191-196
Author(s):  
A. Koichi Hayashi ◽  
Takayuki Fuyuto ◽  
Toshi Fujiwara
Keyword(s):  
Numerical Simulation ◽  
Shock Waves ◽  
Two Phase
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