Electric Field Effects

Higuera, F. J.

doi:10.1002/9781119220510.ch2

Cited by 3 publications

(1 citation statement)

References 46 publications

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“…Additionally, to the evolution of meniscus shape we present the velocity plot along the longitudinal axis at 60 ms for both concentrations of PVP (see Figure 9 ). Please note that the velocity of the solution in the jet is higher compared to its velocity in the meniscus [ 60 ]. The characteristic velocity inside the Taylor cone can be estimating by

, where I is the current (

and L

is the characteristic meniscus length (diameter of the needle used) [ 61 ].…”

Section: Numerical Simulationsmentioning

confidence: 99%

Determination of the Operational Parameters for the Manufacturing of Spherical PVP Particles via Electrospray

2021

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This work aims at bridging experimental and numerical approaches to determine the optimal operating parameters for the fabrication of well-shaped polyvinylpyrrolidone (PVP) particles via electrohydrodynamic atomization. Particular emphasis is given to the role of the PVP solution viscosity. Solutions of PVP at various concentrations dissolved in Dimethylformamide (DMF) were prepared and analyzed. Numerical simulation using a coupled electro-CFD model was used to determine the ranges of experimental flow rate and the voltage, ensuring that well-shaped spherical particles are produced. It was deduced that the optimal combination of the parameters (flow rate, voltage, and polymer concentration) can be well approximated by a scaling law. The established relationship allowed determination of a stability island that guarantees that the given polymer solution will form spherical particles. Analyzing morphology and sizes of the particles manufactured in the optimal parameters range, we show, among others, that the size of the PVP particles can be predicted as a function of the flow rate by a power scaling relationship.

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, where I is the current (

and L

is the characteristic meniscus length (diameter of the needle used) [ 61 ].…”

Section: Numerical Simulationsmentioning

confidence: 99%