New gas-liquid two-phase flow pattern maps based on the energy ratio of pressure fluctuation through a Venturi tube

• Autorzy: Sun Zhiqiang , Chen Luyang , Yao Fengyan

Identyfikatory

DOI

10.24425/mms.2019.128352

• Języki publikacji: EN

Abstrakty

EN

To find effective and practical methods to distinguish gas-liquid two-phase flow patterns, new flow pattern maps are established using the differential pressure through a classical Venturi tube. The differential pressure signal was first decomposed adaptively into a series of intrinsic mode functions (IMFs) by the ensemble empirical mode decomposition. Hilbert marginal spectra of the IMFs showed that the flow patterns are related to the amplitude of the pressure fluctuation. The cross-correlation method was employed to sift the characteristic IMF, and then the energy ratio of the characteristic IMF to the raw signal was proposed to construct flow pattern maps with the volumetric void fraction and with the two-phase Reynolds number, respectively. The identification rates of these two maps are verified to be 91.18% and 92.65%. This approach provides a cost-effective solution to the difficult problem of identifying gas-liquid flow patterns in the industrial field.

Słowa kluczowe

EN

gas-liquid two-phase flow; flow pattern map; Venturi tube; pressure fluctuation; energy ratio; ensemble empirical mode decomposition

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2019
• Tom: Vol. 26, nr 2
• Strony: 241--252
• Opis fizyczny: Bibliogr. 27 poz., rys., tab., wykr., wzory

Twórcy

autor

Sun Zhiqiang

• Central South University, School of Energy Science and Engineering, Changsha 410083, China

autor

Chen Luyang

• Central South University, School of Energy Science and Engineering, Changsha 410083, China

autor

Yao Fengyan

• Central South University, School of Energy Science and Engineering, Changsha 410083, China

Bibliografia

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Uwagi

1. We are grateful for the financial support from the National Natural Science Foundation of China (51576213), the Hunan Provincial Natural Science Foundation of China (2017JJ1031), the Changsha Scientific Program (KQ1706066), the Fundamental Research Funds for the Central Universities of Central South University (2018zzts024) and the Open-End Fund for the Valuable and Precision Instruments of Central South University (CSUZC201822).

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).