TY  - EJOU
AU  - Melnikov, D.E. 
AU  - Shevtsova, V.M. 

TI  - Axially Running Wave in Liquid Bridge
T2  - Fluid Dynamics \& Materials Processing

PY  - 2007
VL  - 3
IS  - 4
SN  - 1555-2578

AB  - Thermocapillary convection in a long vertical liquid column (called liquid bridge) subjected to heating from above is considered for a three-dimensional Boussinesq fluid. The problem is solved numerically via finite-volume method. Full system of three dimensional Navier-Stokes equations coupled with the energy equation is solved for an incompressible fluid. Instability sets in through a wave propagating in axial direction with zero azimuthal wave number, which is a unique stable solution over a wide range of supercritical heating. Further increasing the applied temperature difference results in bifurcation of a second wave traveling azimuthally with a slightly higher frequency. The two waves co-exist within a certain range of the supercritical parameter and finally the axially running one gets suppressed while the azimuthal gets stronger.
KW  - Thermocapillary convection
KW  -  hydrothermal wave
KW  -  liquid bridge
KW  -  instability
KW  -  CFD

DO  - 10.3970/fdmp.2007.003.329