Results 211 to 220 of about 71,283 (262)
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Studies in bubble formation - IV: bubble formation at porous discs
Chemical Engineering Science, 1970Abstract Bubble formation from porous discs submerged in liquids of different physical properties has been investigated. It is found the number of sites effective for bubble formation is much smaller than the total potentially available sites. The number of effective sites is found to be a function of the surface tension, viscosity, and density of ...
Bowonder, B, Kumar, R
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Bubble Formation on Inclined Surfaces
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2001AbstractGas purging is used in metal casting processes to increase the product quality. We studied the influence of the surface inclination and the surface roughness on the bubble formation in experiments using water, air and teflon surfaces.
Teppner, R., Schaflinger, U.
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Controlled Bubble Formation From a Microelectrode Single Bubble Generator
Journal of Fluids Engineering, 2023Abstract In this work, a new micro-electrode bubble generator is presented that employs a micro-electrode installed inside a small nozzle enabling the production of bubbles with controllable size and frequency. This bubble generator can be employed as a simple and potentially cheap method for the generation of single bubbles in a liquid,
Bo Yang +3 more
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Frequency of Bubble Formation in Modified Bubble Electrospinning
Advanced Materials Research, 2013Bubble-electrospinning is one of the most straightforward ways to fabricate polymer solution into nanofibers. The key point of the technology is to control bubble size and formation frequency. A modified bubble electrospinning set-up is designed to control the size of polymer bubbles and frequency of bubble formation in the spinning process.
Hai Yan Kong, Ji Huan He
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The Formation of Financial Bubbles in Defaultable Markets
SIAM Journal on Financial Mathematics, 2015Summary: In this paper we study the formation of financial bubbles in the valuation of defaultable claims in a reduced-form setting. The birth of a bubble is caused by the impact of trading activity of investors, who consider the claim to be a safe investment under some circumstances.
Francesca Biagini, Sorin Nedelcu
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Laser induced bubble formation in the retina
Lasers in Surgery and Medicine, 1995The immediate thermodynamic effects of absorption of a laser pulse in the retina are theoretically studied to understand underlying physical damage mechanisms at threshold fluences. Damage is most likely to occur at threshold levels in the retinal pigment epithelium due to the strong absorption by the melanosomes.The retinal pigment epithelium is ...
B S, Gerstman +3 more
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Asymmetric Bubble Formation at Rectangular Orifices
Langmuir, 2021Bubble formation in liquids is frequently observed in nature and applied in various industrial processes. These include pool and flow boiling for thermal management systems, where bubbles may form asymmetrically at narrow slits and in convective flows. While previous studies have focused on symmetric bubble formation at circular orifices, the dynamics ...
Yujia Zhou +5 more
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Journal of Applied Physics, 1944
Extreme values for the negative pressures and the degrees of superheat which water will withstand without forming bubbles are contrasted with the ease of forming bubbles by vibration or by the turbulent flow of liquids. The subject of bubble nuclei is briefly reviewed, and it is pointed out that such nuclei usually function by virtue of sorbed or ...
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Extreme values for the negative pressures and the degrees of superheat which water will withstand without forming bubbles are contrasted with the ease of forming bubbles by vibration or by the turbulent flow of liquids. The subject of bubble nuclei is briefly reviewed, and it is pointed out that such nuclei usually function by virtue of sorbed or ...
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Formation and evolution of bubbly screens in confined oscillating bubbly liquids
Physical Review E, 2010We consider the dynamics of dilute monodisperse bubbly liquid confined by two plane solid walls and subject to small-amplitude high-frequency oscillations normal to the walls. The initial state corresponds to the uniform distribution of bubbles and motionless liquid.
Shklyaev, Sergey, Straube, Arthur V.
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Bubble Formation in the Roller Infusion Pump
Archives of Pediatrics & Adolescent Medicine, 1973A systematic study of a roller infusion pump, designed for slow intra-arterial fluid infusion to newborn infants, has shown that air bubbles infiltrate the fluid in sufficient amounts to present a danger of embolism. The air source was the elastic pumping element fabricated from silicone rubber, a material well known for its high permeability to air ...
R E, Hannemann, R G, Barile
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