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117501 |
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|a Lizarraga-Garcia, Enrique
|e author
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|a Massachusetts Institute of Technology. Department of Mechanical Engineering
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|a Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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|a Buongiorno
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|a Lizarraga-Garcia, Enrique
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|a Buongiorno, Jacopo
|e contributor
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|a Bucci, Mattia
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|a Buongiorno, Jacopo
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|a Bucci, Mattia
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|a An analytical film drainage model and breakup criterion for Taylor bubbles in slug flow in inclined round pipes
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|b Elsevier,
|c 2018-08-24T14:34:36Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/117501
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|a The velocity of Taylor bubbles in inclined pipes is reduced if a lubricating liquid film between the bubble and the pipe wall is not present. An analytical model predicting the gravity-driven drainage of the lubricating film is presented in this article. The model is then used to establish a criterion for film breakup: if the thin film would not break up, where tbubble is the bubble's passage time, and τ is the characteristic film drainage time based on the fluid properties, pipe geometry, and critical film thickness. The model is validated experimentally with Taylor bubbles in inclined pipes (5° to 90°, the latter being vertical) with stagnant liquids (ethanol, methanol, and mixtures of deionized water and methanol). Keywords: Taylor bubble; Slug flow; Film drainage; Film breakup criterion
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|a en_US
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|a Article
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|t International Journal of Multiphase Flow
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