(a) Sketch of the experimental set-up at room temperature. (b) Example of top and side views of a bubble at room temperature in UCONTM oil.
(a) Sketch of the experimental set-up designed for molten glass in a furnace. (b) Example of top view of the platinum crucible with bubble (D = 6.8 mm) at 1044 °C in molten window glass.
(a) Example of an interference pattern on the bubble, signal in (b) was obtained as an average intensity on time in circled area. (b) Example of an interference signal of molten glass.
Typical variation of the normalized thickness of the film as a function of dimensionless time.
Experimental results of normalized thinning rate versus Bond number obtaining for the four liquids.
Bubble shape at a free surface for .
Dynamic viscosity, density, surface tension, and refractive index of liquids explored in the experiments. The two first rows give the properties for liquids available at room temperature. The two last rows provide the properties for molten glasses determined for an operating temperature in the furnace equal to 1227 °C.
Glass compositions given in weight percentage.
Ranges of bubble diameter investigated in the experiments. The corresponding Bond and Ohnesorge numbers are also summarized.
Values of a and the corresponding for the four liquids estimated .
Article metrics loading...
Full text loading...