Presented are reduced-order models of one-dimensional transient two-phase gas–liquid flow in pipelines. The proposed model is comprised of a steady-state multiphase flow mechanistic model in series with a transient single-phase flow model in transmission lines. The steady-state model used in our formulation is a multiphase flow mechanistic model. This model captures the steady-state pressure drop and liquid holdup estimation for all pipe inclinations. Our implementation of this model will be validated against the Stanford University multiphase flow database. The transient portion of our model is based on a transmission line modal model. The model parameters are realized by developing equivalent fluid properties that are a function of the steady-state pressure gradient and liquid holdup identified through the mechanistic model. The model ability to reproduce the dynamics of multiphase flow in pipes is evaluated upon comparison to olga, a commercial multiphase flow dynamic code, using different gas volume fractions (GVF). The two models show a good agreement of the steady-state response and the frequency of oscillation indicating a similar estimation of the transmission line natural frequency. However, they present a discrepancy in the overshoot values and the settling time due to a difference in the calculated damping ratio. The utility of the developed low-dimensional model is the reduced computational burden of estimating transient multiphase flow in transmission lines, thereby enabling real-time estimation of pressure and flow rate.
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October 2016
Research-Article
Low-Dimensional Modeling of Transient Two-Phase Flow in Pipelines
Amine Meziou,
Amine Meziou
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
N285 Engineering Building 1,
Houston, TX 77204
e-mail: ameziou@uh.edu
University of Houston,
4726 Calhoun Road,
N285 Engineering Building 1,
Houston, TX 77204
e-mail: ameziou@uh.edu
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Majdi Chaari,
Majdi Chaari
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
N285 Engineering Building 1,
Houston, TX 77204
e-mail: mchaari@u.edu
University of Houston,
4726 Calhoun Road,
N285 Engineering Building 1,
Houston, TX 77204
e-mail: mchaari@u.edu
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Matthew Franchek,
Matthew Franchek
Professor
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
W214 Engineering Building 2,
Houston, TX 77204
e-mail: mfranchek@central.uh.edu
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
W214 Engineering Building 2,
Houston, TX 77204
e-mail: mfranchek@central.uh.edu
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Rafik Borji,
Rafik Borji
FMC Technologies,
10600 Southdown Trace Trail,
Apt. #408,
Houston, TX 77034
e-mail: rafik.borji@fmcti.com
10600 Southdown Trace Trail,
Apt. #408,
Houston, TX 77034
e-mail: rafik.borji@fmcti.com
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Karolos Grigoriadis,
Karolos Grigoriadis
Professor
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
W212 Engineering Building 2,
Houston, TX 77204
e-mail: karolos@uh.edu
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
W212 Engineering Building 2,
Houston, TX 77204
e-mail: karolos@uh.edu
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Reza Tafreshi
Reza Tafreshi
Associate Professor
Department of Mechanical Engineering,
Texas A&M University at Qatar,
P.O. Box 23874,
Doha, Qatar
e-mail: reza.tafreshi@qatar.tamu.edu
Department of Mechanical Engineering,
Texas A&M University at Qatar,
P.O. Box 23874,
Doha, Qatar
e-mail: reza.tafreshi@qatar.tamu.edu
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Amine Meziou
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
N285 Engineering Building 1,
Houston, TX 77204
e-mail: ameziou@uh.edu
University of Houston,
4726 Calhoun Road,
N285 Engineering Building 1,
Houston, TX 77204
e-mail: ameziou@uh.edu
Majdi Chaari
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
N285 Engineering Building 1,
Houston, TX 77204
e-mail: mchaari@u.edu
University of Houston,
4726 Calhoun Road,
N285 Engineering Building 1,
Houston, TX 77204
e-mail: mchaari@u.edu
Matthew Franchek
Professor
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
W214 Engineering Building 2,
Houston, TX 77204
e-mail: mfranchek@central.uh.edu
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
W214 Engineering Building 2,
Houston, TX 77204
e-mail: mfranchek@central.uh.edu
Rafik Borji
FMC Technologies,
10600 Southdown Trace Trail,
Apt. #408,
Houston, TX 77034
e-mail: rafik.borji@fmcti.com
10600 Southdown Trace Trail,
Apt. #408,
Houston, TX 77034
e-mail: rafik.borji@fmcti.com
Karolos Grigoriadis
Professor
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
W212 Engineering Building 2,
Houston, TX 77204
e-mail: karolos@uh.edu
Department of Mechanical Engineering,
University of Houston,
4726 Calhoun Road,
W212 Engineering Building 2,
Houston, TX 77204
e-mail: karolos@uh.edu
Reza Tafreshi
Associate Professor
Department of Mechanical Engineering,
Texas A&M University at Qatar,
P.O. Box 23874,
Doha, Qatar
e-mail: reza.tafreshi@qatar.tamu.edu
Department of Mechanical Engineering,
Texas A&M University at Qatar,
P.O. Box 23874,
Doha, Qatar
e-mail: reza.tafreshi@qatar.tamu.edu
1Corresponding author.
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received September 15, 2015; final manuscript received June 2, 2016; published online July 14, 2016. Assoc. Editor: Shankar Coimbatore Subramanian.
J. Dyn. Sys., Meas., Control. Oct 2016, 138(10): 101008 (17 pages)
Published Online: July 14, 2016
Article history
Received:
September 15, 2015
Revised:
June 2, 2016
Citation
Meziou, A., Chaari, M., Franchek, M., Borji, R., Grigoriadis, K., and Tafreshi, R. (July 14, 2016). "Low-Dimensional Modeling of Transient Two-Phase Flow in Pipelines." ASME. J. Dyn. Sys., Meas., Control. October 2016; 138(10): 101008. https://doi.org/10.1115/1.4033865
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