Studies On The Flow Of Molten Glass In A Glass Tank By Model Techniques.

A model of a bridge-wall tank was made from plastics to the scale 1/50. Molten glass was replaced by 82% glycerin and its flow in the model under conditions satisfying as far as possible the law of similitude was studied by the following method. Grains of plastics covered with aluminium powder, whose specific gravity was made as nearly as possible the same as that of glycerin, were introduced as tracer. Illumination withal a thin sheet of light lacrosse the tank made the motion of the tracer particles visible, and the velocity distribution in the following distribution on the flowing glycerin was estimated from photographic records of the tracks.