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.

Amine Meziou

Majdi Chaari

Matthew Franchek

Rafik Borji

Karolos Grigoriadis

Reza Tafreshi

Journal of Dynamic Systems Measurement and Control

The Journal of Dynamic Systems, Measurement, and Control publishes theoretical and applied original papers in the traditional areas implied by its name, as well as papers in interdisciplinary areas. Theoretical papers should present new theoretical developments and knowledge for controls of dynamical systems together with clear engineering motivation for the new theory. New theory or results that are only of mathematical interest without a clear engineering motivation or have a cursory relevance only are discouraged. "Application" is understood to include modeling, simulation of realistic systems, and corroboration of theory with emphasis on demonstrated practicality.

The Journal of Dynamic Systems, Measurement, and Control publishes original theoretical and applied papers in the traditional areas implied by its name, as well as in interdisciplinary fields. Theoretical papers should present new theoretical developments and knowledge for the control of dynamical systems, accompanied by clear engineering motivation for the new theory. New theories or results that are solely of mathematical interest, or that have only cursory relevance without clear engineering motivation, are discouraged. 'Application' is understood to include modeling, simulation of realistic systems, and corroboration of theory, with an emphasis on demonstrated practicality.

《Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME》期刊发表与其名称相关的理论和应用原创论文，同时也欢迎跨学科领域的研究。理论论文应展示新的理论发展和动态系统控制的知识，并提供明确的工程动机。仅具数学兴趣的新理论或结果，或与工程应用关系不大的研究，均不被鼓励。这里的“应用”包括对现实系统的建模、仿真，以及理论的验证，强调实际应用的可行性。

Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME

Low-Dimensional Modeling of Transient Two-Phase Flow in Pipelines

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.

Category	Quartile
计算机科学	4
计算机科学, 自动化与控制系统	4
计算机科学, 仪器仪表	4

Low-Dimensional Modeling of Transient Two-Phase Flow in Pipelines

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Journal Info

Category	Quartile
INSTRUMENTS & INSTRUMENTATION	3