Focusing liquid microjets with nozzles

被引：35

作者：

Acero, A. J. ^{[1
]}

Ferrera, C. ^{[1
]}

Montanero, J. M. ^{[1
]}

Ganan-Calvo, A. M. ^{[2
]}

机构：

[1] Univ Extremadura, Dept Mech Energet & Mat Engn, E-06006 Badajoz, Spain

[2] Univ Seville, Dept Aerosp Engn & Fluid Mech, E-41092 Seville, Spain

来源：

JOURNAL OF MICROMECHANICS AND MICROENGINEERING | 2012年 / 22卷 / 06期

关键词：

FREE-SURFACE FLOWS; ABSOLUTE INSTABILITY; VISCOUS-LIQUID; JET; GAS; STABILITY; DYNAMICS; BREAKUP;

D O I：

10.1088/0960-1317/22/6/065011

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The stability of flow focusing taking place in a converging-diverging nozzle, as well as the size of the resulting microjets, is examined experimentally in this paper. The results obtained in most aspects of the problem are similar to those of the classical plate-orifice configuration. There is, however, a notable difference between flow focusing in nozzles and in the plate-orifice configuration. In the former case, the liquid meniscus oscillates laterally (global whipping) for a significant area of the control parameter plane, a phenomenon never observed when focusing with the plate-orifice configuration. Global whipping may constitute an important drawback of flow focusing with nozzles because it reduces the robustness of the technique.

引用

页数：10

共 35 条

[1] Formation of dispersions using "flow focusing" in microchannels [J].

Anna, SL ;

Bontoux, N ;

Stone, HA .

APPLIED PHYSICS LETTERS, 2003, 82 (03) :364-366

[2] Small-scale free surface flows with breakup: Drop formation and emerging applications [J].

Basaran, OA .

AICHE JOURNAL, 2002, 48 (09) :1842-1848

[3] Force Balance at the Transition from Selective Withdrawal to Viscous Entrainment [J].

Blanchette, Francois ;

Zhang, Wendy W. .

PHYSICAL REVIEW LETTERS, 2009, 102 (14)

[4] A new method of image processing in the analysis of axisymmetric drop shapes [J].

Cabezas, MG ;

Bateni, A ;

Montanero, JM ;

Neumann, AW .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2005, 255 (1-3) :193-200

[5] Femtosecond X-ray protein nanocrystallography [J].

Chapman, Henry N. ;

Fromme, Petra ;

Barty, Anton ;

White, Thomas A. ;

Kirian, Richard A. ;

Aquila, Andrew ;

Hunter, Mark S. ;

Schulz, Joachim ;

DePonte, Daniel P. ;

Weierstall, Uwe ;

Doak, R. Bruce ;

Maia, Filipe R. N. C. ;

Martin, Andrew V. ;

Schlichting, Ilme ;

Lomb, Lukas ;

Coppola, Nicola ;

Shoeman, Robert L. ;

Epp, Sascha W. ;

Hartmann, Robert ;

Rolles, Daniel ;

Rudenko, Artem ;

Foucar, Lutz ;

Kimmel, Nils ;

Weidenspointner, Georg ;

Holl, Peter ;

Liang, Mengning ;

Barthelmess, Miriam ;

Caleman, Carl ;

Boutet, Sebastien ;

Bogan, Michael J. ;

Krzywinski, Jacek ;

Bostedt, Christoph ;

Bajt, Sasa ;

Gumprecht, Lars ;

Rudek, Benedikt ;

Erk, Benjamin ;

Schmidt, Carlo ;

Hoemke, Andre ;

Reich, Christian ;

Pietschner, Daniel ;

Strueder, Lothar ;

Hauser, Guenter ;

Gorke, Hubert ;

Ullrich, Joachim ;

Herrmann, Sven ;

Schaller, Gerhard ;

Schopper, Florian ;

Soltau, Heike ;

Kuehnel, Kai-Uwe ;

Messerschmidt, Marc .

NATURE, 2011, 470 (7332) :73-U81

[6] 2-DIMENSIONAL FLOW UNDER GRAVITY IN A JET OF VISCOUS LIQUID [J].

CLARKE, NS .

JOURNAL OF FLUID MECHANICS, 1968, 31 :481-&

[7] A DIFFERENTIAL EQUATION IN FLUID MECHANICS [J].

CLARKE, NS .

MATHEMATIKA, 1966, 13 (25P1) :51-&

[8]

DePonte D.P., 2008, J. Phys. D. Appl. Phys, V41, P1

[9] Role of the channel geometry on the bubble pinch-off in flow-focusing devices [J].

Dollet, Benjamin ;

van Hoeve, Wim ;

Raven, Jan-Paul ;

Marmottant, Philippe ;

Versluis, Michel .

PHYSICAL REVIEW LETTERS, 2008, 100 (03)

[10] Nonlinear dynamics and breakup of free-surface flows [J].

Eggers, J .

REVIEWS OF MODERN PHYSICS, 1997, 69 (03) :865-929

← 1 2 3 4 →