Dynamics of liquid slug using particle image velocimetry technique

M. I. Siddiqui, A. Rashid A. Aziz, M. R. Heikal

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBN

Abstract

Two phase liquid-gas slug flow is a source of vibration and fatigue on pipe walls and downstream equipment. This paper examines the effect of inlet conditions on the stream-wise velocity profiles and on the shear stresses induced by the liquid phase on the pipe wall during the slug flow. Instantaneous velocity vector fields of the liquid-gas (water-air) slug flow regime were obtained using particle image velocimetry (PIV) technique at various inlet conditions. A 6-m long Plexiglas pipe having an internal diameter 74-mm with a slight inclination of about 1.16�was considered for the visualization of the flow pattern. Test section was employed at a point 3.5m from the inlet, mounted with optical correction box filled with water to minimize the curvature effect of pipe on the PIV snapshots. Stream-wise velocity profiles are obtained at the wake of the liquid slug and the effect of inlet conditions were analyzed. A direct relationship was observed in between superficial gas velocity and the liquid stream-wise velocity at wake section of the slug flow. Further, the lower wall shear stresses were obtained using PIV velocity profiles at liquid film and the slug wake sections in a unit slug. The wall shear stress remained higher in the liquid slugy body as compared to the liquid film. Moreover, an increase in the wall shear stress was observed by increasing the gas superficial velocities.

Original languageEnglish
Title of host publication4th International Conference on Fundamental and Applied Sciences, ICFAS 2016
PublisherAmerican Institute of Physics Inc.
Volume1787
ISBN (Electronic)9780735414518
DOIs
Publication statusPublished - 28 Nov 2016
Event4th International Conference on Fundamental and Applied Sciences, ICFAS 2016 - Kuala Lumpur, Malaysia
Duration: 15 Aug 201617 Aug 2016

Conference

Conference4th International Conference on Fundamental and Applied Sciences, ICFAS 2016
CountryMalaysia
CityKuala Lumpur
Period15/08/1617/08/16

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    Siddiqui, M. I., Aziz, A. R. A., & Heikal, M. R. (2016). Dynamics of liquid slug using particle image velocimetry technique. In 4th International Conference on Fundamental and Applied Sciences, ICFAS 2016 (Vol. 1787). [060003] American Institute of Physics Inc.. https://doi.org/10.1063/1.4968130