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THE EFFECT OF HEAT FLUX DISTRIBUTION ON THERMOCAPILLARY CONVECTION IN A SIDE-HEATED LIQUID BRIDGE

A numerical analysis is performed on thermocapillary convection in a liquid bridge. The effect of various imposed heat flux distributions on the free surface for axisymmetric liquid bridge flows, in zero gravity, is presented. Constant, polynomial, and different Gaussian profiles are considered, and the resulting velocity and temperature fields are compared. It is shown that a more concentrated heat flux distribution has a significant effect on the hydrodynamics of the liquid bridge. The transition from steady to unsteady flows also depends on the distribution of applied heat flux. The frequency of the oscillation increases with Ma increase.