Absolute Instability of a Liquid Jet in a Coflowing Stream

by: Andrew S Utada, Alberto F Nieves, Jose M Gordillo, David A Weitz

Physical Review Letters, Vol. 100, No. 1. (2008)

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Cylindrical liquid jets are inherently unstable and eventually break into drops due to the Rayleigh-Plateau instability, characterized by the growth of disturbances that are either convective or absolute in nature. Convective instabilities grow in amplitude as they are swept along by the flow, while absolute instabilities are disturbances that grow at a fixed spatial location. Liquid jets are nearly always convectively unstable. Here we show that two-phase jets can breakup due to an absolute instability that depends on the capillary number of the outer liquid, provided the Weber number of the inner liquid is >O(1). We verify our experimental observations with a linear stability analysis.

@article{citeulike:2683174, abstract = {Cylindrical liquid jets are inherently unstable and eventually break into drops due to the Rayleigh-Plateau instability, characterized by the growth of disturbances that are either convective or absolute in nature. Convective instabilities grow in amplitude as they are swept along by the flow, while absolute instabilities are disturbances that grow at a fixed spatial location. Liquid jets are nearly always convectively unstable. Here we show that two-phase jets can breakup due to an absolute instability that depends on the capillary number of the outer liquid, provided the Weber number of the inner liquid is \>O(1). We verify our experimental observations with a linear stability analysis.}, author = {Utada, Andrew S. and Nieves, Alberto F. and Gordillo, Jose M. and Weitz, David A. }, citeulike-article-id = {2683174}, doi = {10.1103/PhysRevLett.100.014502}, journal = {Physical Review Letters}, keywords = {2008, atlanta, emulsion, flow, gt, qualif3, weitz}, number = {1}, posted-at = {2008-04-17 19:57:33}, priority = {2}, publisher = {APS}, title = {Absolute Instability of a Liquid Jet in a Coflowing Stream}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000100000001014502000001\&idtype=cvips\&gifs=yes}, volume = {100}, year = {2008} }

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TY - JOUR ID - citeulike:2683174 L3 - citeulike-article-id:2683174 TI - Absolute Instability of a Liquid Jet in a Coflowing Stream JF - Physical Review Letters VL - 100 IS - 1 PB - APS N2 - Cylindrical liquid jets are inherently unstable and eventually break into drops due to the Rayleigh-Plateau instability, characterized by the growth of disturbances that are either convective or absolute in nature. Convective instabilities grow in amplitude as they are swept along by the flow, while absolute instabilities are disturbances that grow at a fixed spatial location. Liquid jets are nearly always convectively unstable. Here we show that two-phase jets can breakup due to an absolute instability that depends on the capillary number of the outer liquid, provided the Weber number of the inner liquid is >O(1). We verify our experimental observations with a linear stability analysis. KW - 2008 KW - atlanta KW - emulsion KW - flow KW - gt KW - qualif3 KW - weitz AU - Utada, Andrew AU - Nieves, Alberto AU - Gordillo, Jose AU - Weitz, David PY - 2008/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000100000001014502000001&idtype=cvips&gifs=yes ER -

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