Nitrogen Bubble Dynamics in Sunflower Oil at Atmospheric Pressure

Tsiadi, A.V.; Stavrides, E.; Handa-Corrigan, A.

doi:10.1205/096030899532565

Cited by 2 publications

(3 citation statements)

References 31 publications

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“…Peebles and Garber6 measured the terminal velocities of single air bubbles in cotton seed oil (at a temperature not stated). Kojima et al7 reported the terminal velocities of single air bubbles in castor oil at 31.8°C and Tsiadi et al2 studied sizes and shapes of multi‐N 2 bubbles in sunflower oil at 18–70°C at and 101 kPa using sintered disc.…”

Section: Rise Of Gas Bubble In Vegetable Oilmentioning

confidence: 99%

Structural development of HDPE in injection molding

Sousa

Reis

Cunha

et al. 2003

J of Applied Polymer Sci

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This study investigated some relevant structure/properties relationships in shear-controlled orientation in injection molding (SCORIM) of high-density polyethylene (HDPE). SCORIM was used to deliberately induce a strong anisotropic character in the HDPE microstructure. Three grades with different molecular weight characteristics were molded into tensile test bars, which were subsequently characterized in terms of the mechanical behavior by tensile tests and microhardness measurements. The structure developed upon processing was also characterized by polarized light microscopy (PLM), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and wide-angle Xray diffraction (WAXD). SCORIM allows the production of very stiff molded parts, exhibiting a very well-defined laminated morphology. This morphology is associated with both an M-shaped microhardness profile and a pronounced mechanical anisotropy. These characteristics are supported by an analogous variation in the crystallinity and a high level of molecular orientation, as indicated, respectively, by calorimetric measurements and X-ray diffraction results.

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Section: Rise Of Gas Bubble In Vegetable Oilmentioning

confidence: 99%

Structural development of HDPE in injection molding

Sousa

Reis

Cunha

et al. 2003

J of Applied Polymer Sci

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“…The present experimental investigation aims to observe shapes, rises velocities and drag coefficients of single air bubbles, methanol drops, and ethanol drops rising in sunflower oil at various temperatures. In addition, the results obtained from this study can also provide basic information for other processes in which bubble and vegetable oil are involved, such as refining of vegetable oils using gas bubbles (e.g., Tsiadi et al 2 ).…”

Section: Introductionmentioning

confidence: 78%

“…Arnold 5 reported the measured terminal velocities of small air bubbles in olive oil at 22 C. Peebles and Garber 6 measured the terminal velocities of single air bubbles in cotton seed oil (at a temperature not stated). Kojima et al 7 reported the terminal velocities of single air bubbles in castor oil at 31.8 C and Tsiadi et al 2 studied sizes and shapes of multi-N 2 bubbles in sunflower oil at 18-70 C at and 101 kPa using sintered disc. A large amount of literature about the rises of gas bubbles in liquids has been published and reviewed for over a century.…”

Section: Rise Of Gas Bubble In Vegetable Oilmentioning

confidence: 99%

The dynamics of single air bubbles and alcohol drops in sunflower oil at various temperatures

2011

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Steady rises of a single air bubble, a methanol drop, and an ethanol drop in a vertical glass column of refined sunflower oil at temperatures of 25, 30, 40, and 50 C are investigated experimentally using photography. The Reynolds numbers obtained are 0.07-16, 0.02-13.43, and 0.017-11.18 for the air bubbles, methanol drops, and ethanol drops, respectively. Results for terminal velocity and drag coefficient are compared with the selected existing correlations for bubble and drop motions in immiscible liquids. Correlations by Rodrigue show good agreement for various bubble sizes and system temperatures. Experimental drag coefficients of methanol and ethanol drops show a systematic deviation from the Oliver and Chung and the Darton and Harrison correlations, respectively. Considering the effect of dissolution of alcohol in vegetable oil, which varies with temperature, on the drop dynamics, semiempirical correction factors are applied to the last two correlations to fit the experimental results. V V C 2010 American Institute of Chemical Engineers AIChE J, 57: 897-910, 2011

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Nitrogen Bubble Dynamics in Sunflower Oil at Atmospheric Pressure

Cited by 2 publications

References 31 publications

Structural development of HDPE in injection molding

Structural development of HDPE in injection molding

The dynamics of single air bubbles and alcohol drops in sunflower oil at various temperatures

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