Miniaturization of Bubbles by Shock Waves in Gas-Liquid Two-phase Flow in the Venturi Tube

2021 ◽  
Author(s):  
Xin Jiang ◽  
Tsuyoshi Yasunobu ◽  
Arisa Nakamura ◽  
Masaki Shimazu
Keyword(s):  
Shock Waves ◽  
Two Phase Flow ◽  
Venturi Tube ◽  
Phase Flow ◽  
Two Phase

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

On shock waves in two-phase flow: effects of inter-phase heat transfer and slip

1999 ◽  
Vol 45 (11) ◽  
pp. 687-696
Author(s):  
W.E. Lear ◽  
C.R. Jackson ◽  
S.A. Sherif
Keyword(s):  
Heat Transfer ◽  
Shock Waves ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Effects

scholarly journals Study on water-vapor two-phase flow behavior in Venturi tube

2018 ◽  
Vol 84 (859) ◽  
pp. 17-00392-17-00392
Author(s):  
Shinichiro UESAWA ◽  
Naoki HORIGUCHI ◽  
Mitsuhiko SHIBATA ◽  
Hiroyuki YOSHIDA
Keyword(s):  
Water Vapor ◽  
Two Phase Flow ◽  
Flow Behavior ◽  
Venturi Tube ◽  
Phase Flow ◽  
Two Phase

scholarly journals Shock Waves in Supersonic Two-Phase Flow of CO2 in Converging-Diverging Nozzles

2009 ◽  
Vol 15 (6) ◽  
pp. 1081-1098 ◽  
Author(s):  
Menandro Serrano Berana ◽  
Masafumi Nakagawa ◽  
Atsushi Harada
Keyword(s):  
Shock Waves ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase
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