An experimental investigation and statistical analysis of turbulent swirl flow in a straight pipe
Author(s) -
Milan Lečić,
Aleksandar Ćoćić,
Jela Burazer
Publication year - 2016
Publication title -
thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci160201191l
Subject(s) - turbulence , mechanics , laminar sublayer , chézy formula , flow (mathematics) , vector field , field (mathematics) , basis (linear algebra) , physics , statistical physics , open channel flow , flow separation , mathematics , geometry , pure mathematics
This paper presents results of our own velocity field measurements in a straight pipe swirl flow. These studies were conducted using an originally designed hot wire probe. Due to the specially tailored shape of the probe, it was possible to get four measurement points in the viscous sublayer. The time-averaged velocity field and the statistical moments of the second and third order are calculated based on the measured velocity components. Mathematical and physical interpretations of statistical characteristics and structures of turbulent swirl flow in the time domain are presented. On the basis of these results, deeper insight into turbulent transport processes can be obtained, as well as useful conclusions necessary for turbulent swirl flows modeling.
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