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Mechanical inhibition of foam formation via a rotating nozzle / Alexander G. Bick in Transactions of the ASME . Journal of fluids engineering, Vol. 133 N° 4 (Avril 2011) 

Public ISBD [article]  in Transactions of the ASME . Journal of fluids engineering > Vol. 133 N° 4 (Avril 2011) . - 03 p. Titre : Mechanical inhibition of foam formation via a rotating nozzle Type de document : texte imprimé Auteurs : Alexander G. Bick, Auteur ; William D. Ristenpart, Auteur ; van Nierop, Ernst A., Auteur Année de publication : 2011 Article en page(s) : 03 p. Note générale : Fluids engineering Langues : Anglais (eng) Mots-clés : Bubbles  Capillarity  Confined  flow  Drops  Foams  Nozzles  Rotational  flow  Two-phase  flow Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : We recently discovered that bubble formation can be substantially prevented when an aqueous solution is sprayed into a bath of the same solution provided that any two consecutive drops impacting the same surface location do so with a time interval greater than the capillary relaxation time. Building on this observation, here we report a mechanical means of preventing foam formation during liquid addition: the nozzle delivering the liquid is rotated sufficiently rapidly so that no two successive drops impact the interface at the same location. Foam formation is reduced by as much as 95% without any chemical anti-foaming agents. DEWEY : 620.1 ISSN : 0742-4795 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA400013 [...] [article] Mechanical inhibition of foam formation via a rotating nozzle [texte imprimé] / Alexander G. Bick, Auteur ; William D. Ristenpart, Auteur ; van Nierop, Ernst A., Auteur . - 2011 . - 03 p. Fluids engineering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 133 N° 4 (Avril 2011) . - 03 p. Mots-clés : Bubbles  Capillarity  Confined  flow  Drops  Foams  Nozzles  Rotational  flow  Two-phase  flow Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : We recently discovered that bubble formation can be substantially prevented when an aqueous solution is sprayed into a bath of the same solution provided that any two consecutive drops impacting the same surface location do so with a time interval greater than the capillary relaxation time. Building on this observation, here we report a mechanical means of preventing foam formation during liquid addition: the nozzle delivering the liquid is rotated sufficiently rapidly so that no two successive drops impact the interface at the same location. Foam formation is reduced by as much as 95% without any chemical anti-foaming agents. DEWEY : 620.1 ISSN : 0742-4795 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA400013 [...]