Determination of Condensation Coefficient of Methanol Vapor by Shock Tube and Molecular Gas Dynamics

2004 ◽  
Vol 2004.2 (0) ◽  
pp. 375-376
Author(s):  
Tatsuki OTA ◽  
Satoru MIKAMI ◽  
Sigeo FUJIKAWA ◽  
Takeru YANO ◽  
Makoto ICHIJO
Keyword(s):  
Shock Tube ◽  
Gas Dynamics ◽  
Molecular Gas ◽  
Condensation Coefficient ◽  
Methanol Vapor

925 Determination of Condensation Coefficient for Methanol : Numerical Analysis Based on Molecular Gas Dynamics for Shock Tube Experiment

2005 ◽  
Vol 2005.7 (0) ◽  
pp. 87-88
Author(s):  
Kazumichi KOBAYASHI ◽  
Satoru MIKAMI ◽  
Tatsuki OTA ◽  
Takeru YANO ◽  
Shigeo FUJIKAWA ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Shock Tube ◽  
Gas Dynamics ◽  
Molecular Gas ◽  
Condensation Coefficient ◽  
Shock Tube Experiment

924 Determination of Condensation Coefficient for Methanol : Measurement of Liquid film Growth By using Optical Interferometer at the Shock Tube Endwall

2005 ◽  
Vol 2005.7 (0) ◽  
pp. 85-86
Author(s):  
Satoru MIKAMI ◽  
Tatsuki OTA ◽  
Kazumichi KOBAYASHI ◽  
Sigeo FUJIKAWA ◽  
Takeru YANO ◽  
...  
Keyword(s):  
Liquid Film ◽  
Shock Tube ◽  
Film Growth ◽  
Condensation Coefficient ◽  
Optical Interferometer

303 Establishment of Kinetic Boundary Conditions of Methanol and Water on the Basis of Molecular Gas Dynamics Analysis and Shock Tube Experiment(2)

2006 ◽  
Vol 2006 (0) ◽  
pp. _303-1_-_303-4_
Author(s):  
Kazumichi KOBAYASHI ◽  
Shunsuke WATANABE ◽  
Masashi INABA ◽  
Takeru YANO ◽  
Shigeo FUJIKAWA ◽  
...  
Keyword(s):  
Boundary Conditions ◽  
Shock Tube ◽  
Gas Dynamics ◽  
Molecular Gas ◽  
Dynamics Analysis ◽  
Kinetic Boundary ◽  
Shock Tube Experiment

Molecular gas dynamics analysis on condensation coefficient of vapour during gas–vapour bubble collapse

2018 ◽  
Vol 856 ◽  
pp. 1045-1063 ◽  
Author(s):  
Kazumichi Kobayashi ◽  
Takahiro Nagayama ◽  
Masao Watanabe ◽  
Hiroyuki Fujii ◽  
Misaki Kon
Keyword(s):  
Gas Dynamics ◽  
Gas Flow ◽  
Bubble Radius ◽  
Density Ratio ◽  
Bubble Collapse ◽  
Molecular Gas ◽  
Dynamics Analysis ◽  
Condensation Coefficient ◽  
Evaporation And Condensation ◽  
Gas Molecules

This study investigates the influence of the condensation coefficient of vapour on the collapse of a bubble composed of condensable gas (vapour) and non-condensable gas (NC gas). We simulated vapour and NC gas flow inside a bubble based on the molecular gas dynamics analysis in order to replicate the phase change (viz., evaporation and condensation) precisely, by changing the initial number density ratio of the NC gas and vapour, the initial bubble radius and the value of the condensation coefficient. The results show that the motion of the bubble is unaffected by the value of the condensation coefficient when that value is larger than approximately 0.4. We also discuss NC gas drift at the bubble wall during the final stage of the bubble collapse and its influence on the condensation coefficient. We conclude that vapour molecules can behave as NC gas molecules when the bubble collapses, owing to the large concentration of NC gas molecules at the gas–liquid interface. That is, the condensation coefficient reaches almost zero when the bubble collapses violently.

Sign in / Sign up

Export Citation Format

Share Document