- Tytuł:
- 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 - Powiązania:
- https://bibliotekanauki.pl/articles/220955.pdf
- Data publikacji:
- 2019
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
gas-liquid two-phase flow
flow pattern map
Venturi tube
pressure fluctuation
energy ratio
ensemble empirical mode decomposition - Opis:
- 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.
- Źródło:
-
Metrology and Measurement Systems; 2019, 26, 2; 241-252
0860-8229 - Pojawia się w:
- Metrology and Measurement Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł