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Two- and Three-Phase Flow Through a 90 Degree Bend

Spedding, P. L. and Bénard, Emmanuel and Mcnally, G. M. Two- and Three-Phase Flow Through a 90 Degree Bend. (2008) Developments in Chemical Engineering and Mineral Processing, 13 (5-6). 719-730. ISSN 0969-1855

(Document in English)

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Official URL: http://dx.doi.org/10.1002/apj.5500130521


Data are presented for two-phase air/water pipeflow and three-phase air/oil/water in a 0.026 m i.d. pipe and elbow bend (R/d = 0.654) for vertical to horizontal flow. The two-phase results were shown to be dependant on the flow regimes present in the system. The elbow bend acted either to smooth the transition from vertical to horizontal flow when the liquid rate was below the bubble rise velocity in the inlet leg (when negative bend pressure losses were achieved), or to generate droplets and increase the bend pressure drop substantially at higher fluid rates.Three-phase data also showed significant but not such dramatic differences, depending on the combined liquid rate being above or below the bubble rise velocity in the inlet leg. Again the variation of pressure drop for the system could be qualitatively explained by the observed flow regimes.For both two-phase and three-phase systems, the observed bend pressure drop could be correlated using a Lockhart-Martinelli approach based on the single-phase flow data for the bend.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Queen's University Belfast - QUB (UNITED KINGDOM)
Deposited On:02 Aug 2018 14:57

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