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Study of drop‐interface coalescence: Drainage time measurement
Author(s) -
Kourio Maria Julia,
Gourdon Christophe,
Casamatta Gilbert
Publication year - 1994
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270170406
Subject(s) - drop (telecommunication) , spinning drop method , mechanics , coalescence (physics) , pressure drop , mass transfer , terminal velocity , materials science , optics , chemistry , engineering , physics , electrical engineering , astrobiology
An automatic apparatus has been developed and set up for the study of drop‐interface coalescence. Most other studies have concentrated on events when the drop arrives at the interface with its terminal velocity. In our case, the drop is maintained fixed at the tip of a needle, and the interface is moved towards the drop at a controlled speed. The coalescence times are measured by means of a vectorial video camera focused on the drop. Several times are measured by means of a vectorial video camera focused on the drop. Several parameters have been investigated, such as the drop diameter, the relative drop‐interface velocity, the phase system, the presence and the direction of mass transfer.