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Gas-liquid Two-Phase Flow Pattern Analysis Based on Multilayer Weighted Complex Network |
ZHANG Li-feng,WANG Zhi,ZHANG Qi-liang |
Department of Automation, North China Electric Power University, Baoding, Hebei 071003, China |
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Abstract A flow pattern analysis method based on multi-layer weighted complex networks is presented.Firstly,the electrical resistance tomography system is used to obtain the flow information of gas-liquid two-phase flow in vertical rising pipeline,and the measured data are compressed to simplify the data analysis.Then the multi-scale decomposition is carried out by using the multi-dimensional empirical mode decomposition algorithm, so the flow system can be mapped to the multi-layer weighted network. The network structure is described quantitatively by calculating the average weighted aggregation coefficient and spectral radius. The final results show that the network model can effectively reveal the evolution process from bubble flow to slug flow, from bubble aggregation to gas slug gradual breaking, and from pseudo periodicity to decline can be reflected by the changes of network parameters.
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Received: 22 March 2022
Published: 18 May 2023
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