Bubble formation at submerged nozzles for small gas flow rate under low gravity

Autor:	Hirokazu Matsue, Koichi Terasaka, Hideki Tsuge, Wataru Koshida
Rok vydání:	1997
Předmět:	Maximum bubble pressure method Chemistry Applied Mathematics General Chemical Engineering Drop (liquid) Bubble Nozzle Thermodynamics General Chemistry Mechanics Industrial and Manufacturing Engineering Volumetric flow rate Tuyere Physics::Fluid Dynamics Surface tension Liquid bubble
Zdroj:	Chemical Engineering Science. 52:3415-3420
ISSN:	0009-2509
Popis:	To develop gas-liquid contacting processes in space stations, bubble formation at a nozzle submerged in liquid under low gravity was discussed. Effects of gas flow rate and surface tension on bubble formation were experimentally investigated over a 10 s period using the drop shaft of Japan Microgravity Center at Kamisunagawa in Japan. When the gas flow rate is comparatively small, a spherical bubble does not detach from the nozzle and continues to expand in quiescent liquids. To theoretically describe bubble formation under low gravity, the non-spherical bubble formation model was used. It is predicted by this model that bubble volume increases under constant flow conditions and a bubble does not detach from a nozzle when the gas flow rate is small in a quiescent liquid. These calculated results of bubble volume and shape agree well with the experimental ones.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::77cdef9c3e8cf3444ce73b6ea836f8b9 https://doi.org/10.1016/s0009-2509(97)00159-0 Zobrazit plný text záznamu Full Text from ScienceDirect