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KOZÁK, J. RUDOLF, P. ŠTEFAN, D. HUDEC, M. GRÍGER, M.
Original Title
ANALYSIS OF PRESSURE PULSATIONS OF CAVITATING FLOW IN CONVERGING-DIVERGING NOZZLE
Type
conference paper
Language
English
Original Abstract
Cavitating flow in converging-diverging nozzle (axisymmetric Venturi tube) is investigated. Characterization of the cavitating flow was done with high speed camera and the basic flow patterns were determined: incipient cavitation, partial cavitation, fully developed cavitation and supercavitation. Pressure transducers of tenzometric and piezoelectric types were used to determine amplitude-frequency characteristics of the pressure pulsations in particular regimes. Results were correlated with spectral properties obtained from high-speed camera video sequences and image processing analysis. Finally, attempt of unsteady cavitating flow CFD simulation is presented.
Keywords
Cavitation; CFD; OpenFoam; Venturi tube; Vortex ring; FFT
Authors
KOZÁK, J.; RUDOLF, P.; ŠTEFAN, D.; HUDEC, M.; GRÍGER, M.
RIV year
2015
Released
9. 9. 2015
ISBN
978-961-6770-31-6
Book
Cavitation and dynamic problems - IAHRWG 2015 - Proceedings
Edition
1
Pages from
10
Pages to
19
Pages count
9
BibTex
@inproceedings{BUT117617, author="Jiří {Kozák} and Pavel {Rudolf} and David {Štefan} and Martin {Hudec} and Milan {Gríger}", title="ANALYSIS OF PRESSURE PULSATIONS OF CAVITATING FLOW IN CONVERGING-DIVERGING NOZZLE", booktitle="Cavitation and dynamic problems - IAHRWG 2015 - Proceedings", year="2015", series="1", pages="10--19", isbn="978-961-6770-31-6" }