Detail publikačního výsledku

ANALYSIS OF PRESSURE PULSATIONS OF CAVITATING FLOW IN CONVERGING-DIVERGING NOZZLE

KOZÁK, J.; RUDOLF, P.; ŠTEFAN, D.; HUDEC, M.; GRÍGER, M.

Originální název

ANALYSIS OF PRESSURE PULSATIONS OF CAVITATING FLOW IN CONVERGING-DIVERGING NOZZLE

Anglický název

ANALYSIS OF PRESSURE PULSATIONS OF CAVITATING FLOW IN CONVERGING-DIVERGING NOZZLE

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

Cavitation; CFD; OpenFoam; Venturi tube; Vortex ring; FFT

Klíčová slova v angličtině

Cavitation; CFD; OpenFoam; Venturi tube; Vortex ring; FFT

Autoři

KOZÁK, J.; RUDOLF, P.; ŠTEFAN, D.; HUDEC, M.; GRÍGER, M.

Rok RIV

2016

Vydáno

09.09.2015

ISBN

978-961-6770-31-6

Kniha

Cavitation and dynamic problems - IAHRWG 2015 - Proceedings

Edice

1

Strany od

10

Strany do

19

Strany počet

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"
}