Abstract
This study aims to elucidate the break characteristics of liquid film formed between approaching bubbles in the process of bubble coalescence. The coalescence of horizontally contacting twin bubbles was experimentally studied in isothermal system. The bubbles were generated at the outlets of two pipes that face each other horizontally. Liquid film thickness formed between approaching bubbles were measured by the modified laser extinction method. The variation and the distribution of liquid film thickness between bubbles were investigated. The air flow rate, sample liquids and the measuring position of liquid film thickness were adopted as the experimental parameters.
