TY - JOUR
T1 - Theoretical analysis of 3D emulsion droplet generation by a device using coaxial glass tubes
AU - Gu, Ye
AU - Kojima, Hiroyuki
AU - Miki, Norihisa
N1 - Funding Information:
The present research was funded by the New Energy and Industrial Technology Development Organization (NEDO) .
PY - 2011/10
Y1 - 2011/10
N2 - In the present paper, we propose a theoretical analysis approach to the generation of monodisperse emulsion droplets by a device using coaxially fixed pulled glass tubes. Using this device, the dispersed phase fed into the inner glass tube forms a fluidic droplet and grows at the tube end due to surface tension before detaching due to the drag force applied by the continuous phase, which flows between the inner tube and the outer tube, as illustrated in Fig. 1. We established a theoretical model for this phenomenon and analyzed the forces applied to the fluidic droplet that is about to detach and obtained equations describing the relation among the droplet size, flow rate, and viscosity μ of the continuous phase, the sizes of the glass tubes, and the surface tension coefficient γ of the dispersed phase. Experiments were conducted under a variety of conditions in order to verify these equations. The experimental results agreed with the theoretical model with a low difference of less than 5%.
AB - In the present paper, we propose a theoretical analysis approach to the generation of monodisperse emulsion droplets by a device using coaxially fixed pulled glass tubes. Using this device, the dispersed phase fed into the inner glass tube forms a fluidic droplet and grows at the tube end due to surface tension before detaching due to the drag force applied by the continuous phase, which flows between the inner tube and the outer tube, as illustrated in Fig. 1. We established a theoretical model for this phenomenon and analyzed the forces applied to the fluidic droplet that is about to detach and obtained equations describing the relation among the droplet size, flow rate, and viscosity μ of the continuous phase, the sizes of the glass tubes, and the surface tension coefficient γ of the dispersed phase. Experiments were conducted under a variety of conditions in order to verify these equations. The experimental results agreed with the theoretical model with a low difference of less than 5%.
KW - 3D axial symmetric
KW - Emulsion droplets
KW - Micro-fluidics
KW - Theoretical analysis
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U2 - 10.1016/j.sna.2011.02.043
DO - 10.1016/j.sna.2011.02.043
M3 - Article
AN - SCOPUS:80052037095
VL - 169
SP - 326
EP - 332
JO - Sensors and Actuators A: Physical
JF - Sensors and Actuators A: Physical
SN - 0924-4247
IS - 2
ER -