The Determination of Surface Tension (Free Surface Energy), and the Weight of Falling Drops: The Surface Tension of Water and Benzene by the Capillary Height Method.

Harkins, William D.; Brown, F. E.

doi:10.1021/ja01461a003

Cited by 802 publications

(371 citation statements)

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“…Harkins and Brown [53] proposed a similar functional relationship as that of Eq. (18) though for the volume of detached water droplets.…”

Section: Effect Of Orifice Diametermentioning

confidence: 96%

“…In this way, the weight of the liquid drop could be expressed as a relation such as mg = pd o r f(d o /L c ). In [53], the function f(d o /L c ) was termed a correction that should be used for translating drop weight data into surface tension measurements. It should be noted that Harkins and Brown [53] used the Capillary Number, a, to represent a linear dimension of the bubble related to its shape which is related to the Capillary Length used here through a 2 ¼ 2L 2 c .…”

Section: Effect Of Orifice Diametermentioning

confidence: 99%

“…19 shows a comparison between the predictions of Eq. (18) of this work with the drop weight data tabulated by Harkins and Brown [53] for their drop weight measurements which included data from previous researchers for low d o /L c . The data is only plotted for the approximate range of d o /L c associated with the data in Fig.…”

Section: Effect Of Orifice Diametermentioning

confidence: 99%

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Experimental study of gas injected bubble growth from submerged orifices

Bari

Robinson

2013

Experimental Thermal and Fluid Science

129

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a b s t r a c tThis work investigates the mechanism of adiabatic gas bubble growth from submerged orifices with the view of elucidating the interdependence of the bubble shape and the pressure field during growth and departure. Air injection flow rates between 10 mlph and 100 mlph have been tested for orifices of diameters 0.58 mm, 1.05 mm and 1.6 mm. The force field around single isolated bubbles during growth and detachment has been investigated experimentally with the aid of high speed photography and detailed image processing and measurement of the internal bubble pressure. Different flow rates have been compared in order to elucidate dynamic effects. Combining measurements of the instantaneous gas pressure, measurements of the local curvature and the Young-Laplace equation has allowed the estimation of the liquid pressure field acting on the gas-liquid interface over the entire bubble surface. These have subsequently been decomposed into constitutive components such as buoyancy, contact pressure, capillary and the dynamic pressure forces.

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“…Harkins and Brown [53] proposed a similar functional relationship as that of Eq. (18) though for the volume of detached water droplets.…”

Section: Effect Of Orifice Diametermentioning

confidence: 96%

Section: Effect Of Orifice Diametermentioning

confidence: 99%

Section: Effect Of Orifice Diametermentioning

confidence: 99%

See 1 more Smart Citation

Experimental study of gas injected bubble growth from submerged orifices

Bari

Robinson

2013

Experimental Thermal and Fluid Science

129

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“…There occurs a bridge between it and the germ, which decreases over time until the moment the drop is torn. This current is by gravity, that is, the shape of the bridge retains its shape -it remains the same as in the earlier point in time, only at a different spatial scale, which was established in many experiments [13][14][15].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Analysis of kinetics pattern in the formation and separation of a drop of fluid in the form of a capsule

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Pyvovarov

2017

EEJET

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Представлено кінетичну модель процесу формоутворення крапель капсульованих рідин, починаючи від етапу формування зародка кра-плі до моменту її відриву під дією фізичних сил та технологічних параметрів. Одержані рів-няння являються теоретичним описом проце-су капсулоутворення та обґрунтовують три-валість процесу, розмірні характеристики кінцевого продукту та потужність конструк-тивних машин для одержання капсул Ключові слова: ліпіди, капсулювання, кіне-тика відриву краплі, оболонка альгінат каль-цію, відрив краплі, перемичка краплі, зародок краплі Представлена кинетическая модель процес-са формообразования капель капсулированных жидкостей, начиная от этапа формирования зародыша капли до момента ее отрыва под дей-ствием различных физических сил и техноло-гических параметров. Полученные уравнения являются теоретическим описанием процесса капсулообразования и обосновывают продол-жительность процесса, размерные характе-ристики конечного продукта и мощность кон-структивных машин для получения капсул Ключевые слова: липиды, капсулирование, кинетика отрыва капли, оболочка альгинат кальция, отрыв капли, перемычка капли, заро-дыш капли UDC 544.2

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“…is the detached drop diameter. is the Harkins Brown correction factor 23 : it accounts for the fraction of liquid volume which stays attached to the nozzle after drop detachment. We use the factor of Mori.…”

Section: Experimental Protocolmentioning

confidence: 99%

Drop generation from a vibrating nozzle in an immiscible liquid-liquid system

et al. 2016

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Drop generation from an axially vibrating nozzle exhibits a transition in drop diameter when varying the vibration amplitude. Below a threshold amplitude, forcing has essentially no effect on drop size and drops form in dripping mode. Above the threshold, drop size is controlled by forcing: drops detach at resonance, i.e., when the first eigenfrequency of the growing drop coincides with the forcing frequency. We experimentally study the impact of the nozzle inner diameter, dispersed phase flow rate, interfacial tension, and dispersed phase viscosity on this transition. Drop diameter is well correlated to the mode 1 eigenfrequency of Strani and Sabetta for a drop in partial contact with a spherical bowl. We propose a transient model to describe drop dynamics until detachment. The drop is modelled as a linearly forced harmonic oscillator, with the eigenfrequency of Strani and Sabetta. Since the dispersed phase does not wet the nozzle tip, an additional damping coefficient is introduced to account for the viscous dissipation in the film of continuous phase between the drop and nozzle surface. The model adequately reproduces the effect of the different parameters on the threshold amplitude.

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The Determination of Surface Tension (Free Surface Energy), and the Weight of Falling Drops: The Surface Tension of Water and Benzene by the Capillary Height Method.

Cited by 802 publications

References 0 publications

Experimental study of gas injected bubble growth from submerged orifices

Experimental study of gas injected bubble growth from submerged orifices

Analysis of kinetics pattern in the formation and separation of a drop of fluid in the form of a capsule

Drop generation from a vibrating nozzle in an immiscible liquid-liquid system

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