On closed loop transient response system identification [PDF]
Modeling, Identification and Control, 2016 Some methods for transient closed loop step response system identification presented in the literature are reviewed. Interestingly some errors in a method published in the early 80's where propagated into a recently published method.
Christer Dalen, David Di Ruscio
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Self-supervised learning-based two-phase flow regime identification using ultrasonic sensors in an S-shape riser [PDF]
, 2023 Two-phase flow regime identification is an essential transdisciplinary topic that spans digital signal processing, artificial intelligence, chemical engineering, and energy. Multiphase flow systems significantly impact pipeline safety, heat transfer, and
Whidborne, James F. +11 more
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A Fractional-Order Partially Non-Linear Model of a Laboratory Prototype of Hydraulic Canal System
Entropy, 2019 This article addresses the identification of the nonlinear dynamics of the main pool of a laboratory hydraulic canal installed in the University of Castilla La Mancha.
Saddam Gharab +2 more
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REGIME IDENTIFICATION OF SLURRY TRANSPORT IN PIPELINES - A NOVEL MODELING APPROACH USING ANN AND DIFFERENTIAL EVOLUTION [PDF]
Chemical Industry and Chemical Engineering Quarterly, 2010 Four distinct regimes were found existent (namely sliding bed, saltation, heterogeneous suspension and homogeneous suspension) in slurry flow in pipelines depending upon the average velocity of flow. In the literature, few correlations have been proposed
SANDIP KUMAR LAHIRI, K.C. GHANTA
doaj
Slug Velocity Measurement and Flow Regime Recognition Using Acoustic Emission Technology [PDF]
, 2013 Slug velocity measurement and flow regime recognition using acoustic emission technology are presented. Two non-intrusive and three intrusive methods were employed to detect the slug regime and measure its velocity using AE sensors. For the non-intrusive
Alssayh, Muammer Ali Ahmed
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The effect of tube diameter on vertical two-phase flow regimes in small tubes
, 2006 Flow boiling flow patterns in four circular tubes with internal diameters of 1.10, 2.01, 2.88 and 4.26 mm were investigated in the present project. The experiments were conducted in vertical upward two-phase flow using R134a as the working fluid.
Chen, L, Tian, YS, Karayiannis, TG
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Geofluids, 2020 The principle purpose of this work is to formulate an accurate mathematical model to evaluate the transient pressure behavior of a well intercepted by a partially penetrating vertical fracture (PPVF) with non-Darcy flow effect.
Shuheng Cui +4 more
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Gamma radiation methods for clamp-on multiphase flow metering [PDF]
, 2008 The development of a cost-effective multiphase flow meter to determine the individual phase flow rates of oil, water and gas was investigated through the exploitation of a single clamp-on gamma densitometer and signal processing techniques.
Blaney, S.
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Flow Regime Identification in Vertical Upward Gas–Liquid Flow Using an Optical Sensor With Linear and Quadratic Discriminant Analysis [PDF]
, 2020 The accurate identification of gas–liquid flow regimes in pipes remains a challenge for the chemical process industries. This paper proposes a method for flow regime identification that combines responses from a non-intrusive optical sensor with linear ...
Sarkodie, K, Fergusson-Rees, A.
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EnergiesConventional Diagnostic Fracture Injection Tests (DFITs) are widely used for formation pressure estimation, but in practice, they frequently require days, weeks, or even months of extended shut-in periods, a challenge particularly pronounced when large ...
Qiuyang Xu +9 more
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