TY - JOUR
T1 - Study on the transition mechanism of thermocapillary convection in a liquid bridge
AU - Komiya, Atsuki
AU - Matsumoto, Satoshi
AU - Yoda, Shinichi
PY - 2004/12/1
Y1 - 2004/12/1
N2 - In this paper, the transition mechanism from steady to oscillatory flow of thermocapillary convection (Marangoni convection) is investigated. Two-dimensional simulations with several liquid bridge sizes were conducted in order to clarify the dependency of liquid bridge size on the onset of oscillatory flow. The results show that the formation of velocity distribution on free surface is closely related to temperature dependency of kinematic viscosity and it has influence upon the onset of oscillation. From these results, a basic model for understanding of transition mechanism of Marangoni convection was proposed. In this model, the inertial force generated on free surface and the concept of fluid instability were considered. A novel dimensionless parameter which indicates the onset condition of oscillation, effective Marangoni number, was also proposed and evaluated.
AB - In this paper, the transition mechanism from steady to oscillatory flow of thermocapillary convection (Marangoni convection) is investigated. Two-dimensional simulations with several liquid bridge sizes were conducted in order to clarify the dependency of liquid bridge size on the onset of oscillatory flow. The results show that the formation of velocity distribution on free surface is closely related to temperature dependency of kinematic viscosity and it has influence upon the onset of oscillation. From these results, a basic model for understanding of transition mechanism of Marangoni convection was proposed. In this model, the inertial force generated on free surface and the concept of fluid instability were considered. A novel dimensionless parameter which indicates the onset condition of oscillation, effective Marangoni number, was also proposed and evaluated.
UR - http://www.scopus.com/inward/record.url?scp=23744453335&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=23744453335&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:23744453335
VL - 117
SP - 833
EP - 845
JO - Advances in the Astronautical Sciences
JF - Advances in the Astronautical Sciences
SN - 1081-6003
T2 - 10th International Conference of Pacific Basin Societies, ISCOPS
Y2 - 10 December 2003 through 12 December 2003
ER -