Simulation of the transient motion of pigs through liquid and gas pipelines is presented. The differential form of the mass and linear momentum equations for compressible liquid and gas flows were solved by a finite difference numerical technique. The fluid flow equations were combined with a linear momentum equation for the pig and a model for bypass flow through the pig. The pig/wall contact forces were simulated by a stick/slip model. The contact forces developed by disk pigs and the pipe wall were predicted by a postbuckling finite element analysis of the discs. Test cases representing typical pigging operations were studied using the numerical model developed. The fluid flow and pig behavior predicted by the model presented a reasonable behavior, and contributed for a better understanding of the pig dynamics through gas and liquid pipelines.
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e-mail: lfaa@mec.puc-rio.br
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December 2001
Technical Papers
Transient Pig Motion Through Gas and Liquid Pipelines
A. O. Nieckele,
A. O. Nieckele
Department of Mechanical Engineering, Pontifı´cia Universidade Cato´lica, 22453-900 Rio de Janeiro, Brazil
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A. M. B. Braga,
A. M. B. Braga
Department of Mechanical Engineering, Pontifı´cia Universidade Cato´lica, 22453-900 Rio de Janeiro, Brazil
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L. F. A. Azevedo
e-mail: lfaa@mec.puc-rio.br
L. F. A. Azevedo
Department of Mechanical Engineering, Pontifı´cia Universidade Cato´lica, 22453-900 Rio de Janeiro, Brazil
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A. O. Nieckele
Department of Mechanical Engineering, Pontifı´cia Universidade Cato´lica, 22453-900 Rio de Janeiro, Brazil
A. M. B. Braga
Department of Mechanical Engineering, Pontifı´cia Universidade Cato´lica, 22453-900 Rio de Janeiro, Brazil
L. F. A. Azevedo
Department of Mechanical Engineering, Pontifı´cia Universidade Cato´lica, 22453-900 Rio de Janeiro, Brazil
e-mail: lfaa@mec.puc-rio.br
Contributed by the Petroleum Division and presented at the ETCE/OMAE2000, New Orleans, Louisiana, February 14–17, 2000, of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the Petroleum Division, November 3, 2000; revised manuscript received June 7, 2001. Associate Editor: C. Sarica.
J. Energy Resour. Technol. Dec 2001, 123(4): 260-269 (10 pages)
Published Online: June 7, 2001
Article history
Received:
November 3, 2000
Revised:
June 7, 2001
Citation
Nieckele , A. O., Braga , A. M. B., and Azevedo, L. F. A. (June 7, 2001). "Transient Pig Motion Through Gas and Liquid Pipelines ." ASME. J. Energy Resour. Technol. December 2001; 123(4): 260–269. https://doi.org/10.1115/1.1413466
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