Splitting of a Liquid Jet

Paruchuri, Srinivas; Brenner, Michael P.

doi:10.1103/physrevlett.98.134502

Cited by 44 publications

(16 citation statements)

References 15 publications

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“…The major challenge related to fabrication methods of nanofibrous filter media is its low production rate. There are several methods to increase the production rate of nanofibers, including multijet electrospinning, needleless electrospinning, forcespinning, bubble electrospinning, rotary jet‐spinning, and nozzle‐free centrifugal spinning . Among these methods, ECS is a viable alternative way to mass produce nanofibers .…”

Section: Introductionmentioning

confidence: 99%

Developing porous fibers by electrocentrifuge spinning system

Mobasheri

Valipouri

Ravandi

2019

J of Applied Polymer Sci

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In this study, polysulfone fibers with various surface morphologies were developed using electrocentrifuge spinning system. The effects of a number of parameters, including the solvent system, spinning system angular velocity, and relative humidity, on the fiber morphology were studied using field emission scanning electron microscopy, porosimetry [Brunauer–Emmett–Teller (BET)], and contact angle test. The results showed that the fibers prepared from the acetone/dimethylformamide (DMF) solvent system had higher micro/nano roughness than those fabricated from the tetrahydrofuran/DMF solvent system, that is to say, the higher the vapor pressure of the solvent, the higher the surface roughness. The acetone/DMF system created fibers that had internal porosity. Also, the relative humidity had a significant effect on providing micro/nano roughness, so that increasing the relative humidity led to an increase in the surface roughness. The increase in the angular velocity caused to stretch the micro/nano patterns and increase the fiber diameter. The results of the BET confirmed the microscopic observations. With the increase in the relative humidity and the use of the acetone/DMF system, porosity, and specific surface area of the fiber increased. X‐ray diffraction analysis was also performed and it was found that the presence of moisture did not affect the crystallinity of the fibers. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47513.

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Section: Introductionmentioning

confidence: 99%

Developing porous fibers by electrocentrifuge spinning system

Mobasheri

Valipouri

Ravandi

2019

J of Applied Polymer Sci

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“…Nowadays, the global scientific community focuses on a utilization of multiphase and multicomponent gas-vapordroplet media in a large group of technologies [1,2]. This fact is primarily due to that such an approach promotes higher ecological, energy, technical and economic indicators of equipment operation.…”

Section: Introductionmentioning

confidence: 99%

Ways to increase the evaporation surface area of liquid droplets: an experimental study

Bellettre¹,

Кузнецов²,

Piskunov³

et al. 2019

Proceedings of the 4th World Congress on Momentum, Heat and Mass Transfer

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This study presents the experimental findings on the outcomes of homogeneous water droplets collision in an aerosol cloud and heterogeneous water droplet breakup in the counter gas flow, e.g., airflow. The temperature of such a flow varied from 20 °С to 500 °С. The initial size, namely radius, of the heterogeneous droplets was 1-1.5 mm. The outcomes of collision and breakup of droplets were recognized by high-speed cameras and tracking algorithms of Tema Automotive and Mathematica software. For the first time, we offered the criterion characterizing a change in the liquid surface area due to the enhancement of droplets collision in a gas environment and heterogeneous droplet breakup.

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“…In this paper, we perform both a theoretical and numerical discussion of fiber spinning under the assumption that the forces governing the formation of the fiber are caused by viscous friction in the fiber and by tangential (shear) stresses acting on the fiber. The assumption of dominant viscous forces is appropriate for highly viscous fluids, while shear forces are present, e.g., when air drag is large [15] or electrical forcing is imposed [10]. The influence of shear forces on flow stability has recently been addressed in [14] in combination with other factors.…”

Section: Introductionmentioning

confidence: 99%

“…(1.2) is a dimensionless shear coefficient which in principle is a function of z and t. However, for our theoretical discussion we assume that the shear coefficient S is constant. This is the same assumption as the one made in [14], while in [10] the imposed shear stress is assumed to be a linear function of z. We also note that, in contrast to [14], we allow the shear coefficient to be positive or negative, depending on the direction of the imposed shear stress.…”

Section: Introductionmentioning

confidence: 99%

The effect of shear in fiber spinning

Ceci

Frost

Hagen³

et al. 2009

Z Angew Math Mech

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We study the equations of isothermal fiber spinning under the assumption that viscous friction in the fiber is balanced by shear stresses. Our discussion gives a rather complete picture of the existence and nonexistence of stationary solutions. The linearization about steady state of the governing equations is analyzed by semigroup methods and shown to have the spectrally determined growth property. Both linear and nonlinear stability of stationary solutions is investigated numerically.

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Splitting of a Liquid Jet

Cited by 44 publications

References 15 publications

Developing porous fibers by electrocentrifuge spinning system

Developing porous fibers by electrocentrifuge spinning system

Ways to increase the evaporation surface area of liquid droplets: an experimental study

The effect of shear in fiber spinning

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