2014
DOI: 10.1016/j.jnnfm.2014.08.019
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Dispensing of rheologically complex fluids at the dripping regime

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Cited by 16 publications
(4 citation statements)
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“…In the dripping process, effects of gravitational, viscous, cohesive, capillary, and pressure forces can be present depending on the mechanism of droplet formation. When the solution is moved only due to gravity, the formation of droplets is a result of the balance between the gravitational force pushing the drop down and the cohesive forces holding the hanging drop in the nozzle at the time of its detachment (Han & Kim, ). In this case, a model was developed for predicting the droplet size only as a function of the physicochemical properties of the solution and the nozzle diameter, according to the following equation, given by Tate (): ddroplet=6dnormalTγnormallnormalinormalqρnormallnormalinormalqg1/3 where d droplet and d T are the droplet and nozzle diameter (m), respectively; γ liq and ρ liq are the surface tension (N/m) and density (kg/m³) of the liquid, respectively; and g is the acceleration of gravity (9.8 m/s 2 ).…”
Section: Resultsmentioning
confidence: 99%
“…In the dripping process, effects of gravitational, viscous, cohesive, capillary, and pressure forces can be present depending on the mechanism of droplet formation. When the solution is moved only due to gravity, the formation of droplets is a result of the balance between the gravitational force pushing the drop down and the cohesive forces holding the hanging drop in the nozzle at the time of its detachment (Han & Kim, ). In this case, a model was developed for predicting the droplet size only as a function of the physicochemical properties of the solution and the nozzle diameter, according to the following equation, given by Tate (): ddroplet=6dnormalTγnormallnormalinormalqρnormallnormalinormalqg1/3 where d droplet and d T are the droplet and nozzle diameter (m), respectively; γ liq and ρ liq are the surface tension (N/m) and density (kg/m³) of the liquid, respectively; and g is the acceleration of gravity (9.8 m/s 2 ).…”
Section: Resultsmentioning
confidence: 99%
“…Hence the extensional viscosity of the suspension becomes much smaller than the extensional viscosity of the polymer solution. It is a well-known fact that the extensional viscosity of suspension is smaller than that of polymer solution without particles (Han and Kim, 2014;Le Meins et al, 2003). The decrease of the extensional viscosity is caused by the increased shear component during the extensional flow because the liquid flow through interstices between particles is not strictly extensional and shear flow components appear.…”
Section: Generation Of Particulate Gel Dropmentioning
confidence: 99%
“…The piezoelectric jet dispensing technology for high viscosity fluid was first proposed in 2007 [ 12 ]. After that, a great deal of research about jetting valves or droplet-forming theory have been published [ 13 , 14 , 15 ]. Wang designed a piezoelectric jet dispenser and studied the jet performance [ 16 , 17 ].…”
Section: Introductionmentioning
confidence: 99%