Hilly-terrain pipelines consist of interconnected horizontal, uphill and downhill sections. Slug flow experiences a transition from one state to another as the pipe inclination angle changes. Normally, slugs dissipate if the upward inclination becomes smaller or the downward inclination becomes larger, and slug generation occurs vice versa. Appropriate prediction of the slug characteristics is crucial for the design of pipeline and downstream facilities. In this study, slug dissipation and generation in a valley pipeline configuration (horizontal-downhill-uphill-horizontal) were modeled by use of the method proposed by Zhang et al. The method was developed from the unsteady continuity and momentum equations for two-phase slug flow by considering the entire film zone as the control volume. Computed results are compared with experimental measurements at different air-mineral oil flow rate combinations. Good agreement is observed for the change of slug body length to slug unit length ratio.
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September 2003
Technical Papers
Modeling of Slug Dissipation and Generation in Gas-Liquid Hilly-Terrain Pipe Flow
Hong-Quan Zhang,
Hong-Quan Zhang
TUFF, The University of Tulsa, 600 S. College Ave., Tulsa, OK 74104
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Eissa M. Al-Safran,
Eissa M. Al-Safran
TUFF, The University of Tulsa, 600 S. College Ave., Tulsa, OK 74104
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Subash S. Jayawardena,
Subash S. Jayawardena
Shell Global Solutions US Inc., 3333 Highway 6 S., Houston, TX 77082
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Clifford L. Redus,
Clifford L. Redus
Redus Engineering, 612 Ingram Rd., Devine, TX 78016
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Cem Sarica,
Cem Sarica
TUFFP, The University of Tulsa, 600 S. College Ave., Tulsa, OK 74104
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James P. Brill
James P. Brill
TUFFP, The University of Tulsa, 600 S. College Ave., Tulsa, OK 74104
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Hong-Quan Zhang
TUFF, The University of Tulsa, 600 S. College Ave., Tulsa, OK 74104
Eissa M. Al-Safran
TUFF, The University of Tulsa, 600 S. College Ave., Tulsa, OK 74104
Subash S. Jayawardena
Shell Global Solutions US Inc., 3333 Highway 6 S., Houston, TX 77082
Clifford L. Redus
Redus Engineering, 612 Ingram Rd., Devine, TX 78016
Cem Sarica
TUFFP, The University of Tulsa, 600 S. College Ave., Tulsa, OK 74104
James P. Brill
TUFFP, The University of Tulsa, 600 S. College Ave., Tulsa, OK 74104
Contributed by the Petroleum Division for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received by the Petroleum Division; revised manuscript received Mar. 2003. Associate Editor: A. K. Wojtanowicz.
J. Energy Resour. Technol. Sep 2003, 125(3): 161-168 (8 pages)
Published Online: August 29, 2003
Article history
Revised:
March 1, 2003
Online:
August 29, 2003
Citation
Zhang , H., Al-Safran, E. M., Jayawardena, S. S., Redus, C. L., Sarica , C., and Brill, J. P. (August 29, 2003). "Modeling of Slug Dissipation and Generation in Gas-Liquid Hilly-Terrain Pipe Flow ." ASME. J. Energy Resour. Technol. September 2003; 125(3): 161–168. https://doi.org/10.1115/1.1580847
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