Signals features extraction in radioisotope liquid-gas flow measurements using wavelet analysis - Publikacja - MOST Wiedzy

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Signals features extraction in radioisotope liquid-gas flow measurements using wavelet analysis

Abstrakt

Knowledge of the structure of a flow is significant for the proper conduct of a number of industrial processes. In this case, a description of a two-phase flow regimes is possible by use of the time-series analysis in time, frequency and state-space domain. In this article the Discrete Wavelet Transform (DWT) is applied for analysis of signals obtained for water-air flow using gamma ray absorption. The presented method was illustrated by use data collected in experiments carried out on the laboratory hydraulic installation with a horizontal pipe, equipped with two Am-241 radioactive sources and scintillation probes with NaI(Tl) crystals. Signals obtained from detectors for slug, plug, bubble, and transitional plug – bubble flows were considered in this work. The recorded raw signals were analyzed and wavelet energy was extracted using multiresolution analysis. It was found that energies of wavelet approximation at 1-5 levels are useful to recognize the structure of the flow.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach dostępnych w wersji elektronicznej [także online]
Opublikowano w:
EPJ Web of Conferences nr 213, strony 1 - 4,
ISSN: 2100-014X
Język:
angielski
Rok wydania:
2019
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1051/epjconf/201921302023
Weryfikacja:
Politechnika Gdańska

wyświetlono 12 razy

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