Journal ArticleDOI
Characteristics of counter-current gas-liquid two-phase flow and its limitations in vertical annuli
TLDR
In this paper, the complex flow behavior of counter-current gas-liquid flows in concentric vertical annuli over a wide range of gas and liquid flow rates was characterized by applying fast Fourier transform (FFT) on the associated pressure fluctuation signals.About:
This article is published in Experimental Thermal and Fluid Science.The article was published on 2019-12-01. It has received 23 citations till now. The article focuses on the topics: Two-phase flow & Slug flow.read more
Citations
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Journal ArticleDOI
Comparison of flow dynamics of air-water flows with foam flows in vertical pipes
TL;DR: In this paper, the authors investigated the dynamic behavior of foam flows, including flow regimes, their transitions and pressure profiles in relation to foam characteristics (foam holdup and wetness) at different surfactant concentrations.
Journal ArticleDOI
Use of pressure signal analysis to characterise counter-current two-phase flow regimes in annuli
TL;DR: In this paper, the authors applied four signal process techniques (autocorrelation, power spectral density (PSD), Shannon entropy, and permutation entropy) on pressure signals of counter-current two-phase flows in a 170mm × 70mm concentric vertical annulus.
Journal ArticleDOI
Experimental investigation on the thermo-hydraulic performance of air–water two-phase flow inside a horizontal circumferentially corrugated tube
TL;DR: In this paper , the flow visualization, pressure drop and thermal characteristics of corrugated tube with non-boiling air-water two-phase flow were experimentally studied, and the results revealed that the corrugations significantly affect the flow patterns which results in earlier transition.
Proceedings ArticleDOI
Prediction of the flowing bottom-hole pressure using advanced data analytics
TL;DR: In this article, the authors used linear regression and neural network-based approaches to predict the flowing bottom-hole pressure in coal seam gas wells by taking advantage of the temporal data and advanced analytics, which resulted in the best predictions with the root mean squared error within 198-450 kPa for the five wells.
Journal ArticleDOI
A machine learning-based predictive model for real-time monitoring of flowing bottom-hole pressure of gas wells
TL;DR: In this article , the authors present predictive models for real-time and reliable prediction of bottom hole pressure (FBHP) using surface and subsurface data, acquired from 91 coal seam gas (CSG) wells in Australia over 5-19 month production periods.
References
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Journal ArticleDOI
Modelling flow pattern transitions for steady upward gas-liquid flow in vertical tubes
TL;DR: In this paper, the authors developed models for predicting flow pattern transitions during steady gas-liquid flow in vertical tubes based on physical mechanisms suggested for each transition, incorporating the effect of fluid properties and pipe size.
Journal ArticleDOI
Design parameters estimations for bubble column reactors
TL;DR: In this article, the present state-of-the-art for the estimation of nonadjustable parameters in bubble column reactors is evaluated and a discussion is followed by relevant recommendations for their predictions.
Journal ArticleDOI
One-dimensional drift-flux model and constitutive equations for relative motion between phases in various two-phase flow regimes
Takashi Hibiki,Mamoru Ishii +1 more
TL;DR: In this article, the kinematic constitutive equation for the drift velocity has been studied for various two-phase flow regimes, and a comparison of the model with various experimental data over various flow regimes and a wide range of flow parameters shows a satisfactory agreement.
Journal ArticleDOI
Flow regime transition criteria for upward two-phase flow in vertical tubes
Mishima Kaichiro,Mamoru Ishii +1 more
TL;DR: In this paper, new flow-regime transition criteria for upward gas-liquid flow in vertical tubes have been developed considering the mechanisms of flowregime transitions, which can be compared to existing criteria and experimental data under steady-state and fully developed flow conditions by using relative velocity correlations.