A New Method for the Online Voidage Measurement of the Gas–Oil Two-Phase Flow

2009 ◽  
Vol 58 (5) ◽  
pp. 1571-1577 ◽  
Author(s):  
Xia Li ◽  
Zhiyao Huang ◽  
Baoliang Wang ◽  
Haiqing Li
Keyword(s):  
Two Phase Flow ◽  
New Method ◽  
Phase Flow ◽  
Gas Oil ◽  
Two Phase

scholarly journals Clustering-Based Component Fraction Estimation in Solid–Liquid Two-Phase Flow in Dredging Engineering

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5697
Author(s):  
Chang Sun ◽  
Shihong Yue ◽  
Qi Li ◽  
Huaxiang Wang
Keyword(s):  
Clustering Algorithm ◽  
Two Phase Flow ◽  
Low Cost ◽  
Fast Response ◽  
New Method ◽  
Phase Flow ◽  
Reference Distribution ◽  
Two Phase ◽  
Long Time ◽  
Solid Liquid

Component fraction (CF) is one of the most important parameters in multiple-phase flow. Due to the complexity of the solid–liquid two-phase flow, the CF estimation remains unsolved both in scientific research and industrial application for a long time. Electrical resistance tomography (ERT) is an advanced type of conductivity detection technique due to its low-cost, fast-response, non-invasive, and non-radiation characteristics. However, when the existing ERT method is used to measure the CF value in solid–liquid two-phase flow in dredging engineering, there are at least three problems: (1) the dependence of reference distribution whose CF value is zero; (2) the size of the detected objects may be too small to be found by ERT; and (3) there is no efficient way to estimate the effect of artifacts in ERT. In this paper, we proposed a method based on the clustering technique, where a fast-fuzzy clustering algorithm is used to partition the ERT image to three clusters that respond to liquid, solid phases, and their mixtures and artifacts, respectively. The clustering algorithm does not need any reference distribution in the CF estimation. In the case of small solid objects or artifacts, the CF value remains effectively computed by prior information. To validate the new method, a group of typical CF estimations in dredging engineering were implemented. Results show that the new method can effectively overcome the limitations of the existing method, and can provide a practical and more accurate way for CF estimation.

scholarly journals Fluid structure behaviour in gas-oil two-phase flow in a moderately large diameter vertical pipe

2018 ◽  
Vol 187 ◽  
pp. 377-390 ◽  
Author(s):  
Rajab Omar ◽  
Buddhika Hewakandamby ◽  
Abdelwahid Azzi ◽  
Barry Azzopardi
Keyword(s):  
Two Phase Flow ◽  
Large Diameter ◽  
Phase Flow ◽  
Gas Oil ◽  
Vertical Pipe ◽  
Two Phase ◽  
Fluid Structure

Distinguish the Pattern of Two-Phase Flow with the Technology of Acoustic Emission

2013 ◽  
Vol 816-817 ◽  
pp. 502-505
Author(s):  
Li De Fang ◽  
Yao Zhang ◽  
Wan Ling Zhang ◽  
Qing He ◽  
Yu Jiao Liang
Keyword(s):  
Acoustic Emission ◽  
Two Phase Flow ◽  
New Technology ◽  
Bubbly Flow ◽  
Flow Patterns ◽  
New Method ◽  
Good Effect ◽  
Phase Flow ◽  
Two Phase ◽  
Horizontal Pipe

This paper has propose a new method (acoustic emission) to distinguish the pattern of gas-liquid two-phase flow in the horizontal pipe. The signals which got from the probe when multiphase flow pattern changes in the pipe and the four probe installed on the different position. Through the analysis of time domination, energy of wavelet, collected the signal features and shows there has a significant differences among the three typical flow patterns (bubbly flow, stratified flow, annular flow). Energy of wavelet can clearly represents the signal strength. This paper found that the acoustic emission as a new method to distinguish flow patterns have good effect can as a new technology for the study of gas-liquid two-phase.

High-resolution gas–oil two-phase flow visualization with a capacitance wire-mesh sensor

2010 ◽  
Vol 21 (3) ◽  
pp. 191-197 ◽  
Author(s):  
M.J. Da Silva ◽  
S. Thiele ◽  
L. Abdulkareem ◽  
B.J. Azzopardi ◽  
U. Hampel
Keyword(s):  
High Resolution ◽  
Flow Visualization ◽  
Two Phase Flow ◽  
Wire Mesh ◽  
Phase Flow ◽  
Gas Oil ◽  
Two Phase

Flow behavior and film thickness of gas-oil two-phase flow in the single screw expander

2022 ◽  
Vol 216 ◽  
pp. 106971
Author(s):  
Xianfei Liu ◽  
Hao Jiang ◽  
Fang Wang ◽  
Guodong Xia ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Film Thickness ◽  
Two Phase Flow ◽  
Flow Behavior ◽  
Phase Flow ◽  
Gas Oil ◽  
Two Phase ◽  
Single Screw

Air System Correlations: Part 1 — Labyrinth Seals

1998 ◽  
Author(s):  
H. Zimmermann ◽  
K. H. Wolff
Keyword(s):  
Two Phase Flow ◽  
New Method ◽  
Phase Flow ◽  
Labyrinth Seals ◽  
Two Phase ◽  
Air System

Three important subjects of the physics of air systems have been chosen, Part 1: Labyrinth Seals Part 2: Rotating Holes and Two Phase Flow as in these fields many new papers, partly controversial, are available. A new method of correlating the throughflow for labyrinth seals is generated, it covers the most important parameters and is based on several sources out of the literature. Recommendations for the necessary further research are added. It is concluded that much more effort is required in order to achieve progress against the literature partly consisting of more than 40-year-old books and not comprehensive enough for computerized engineering.

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