Experimental study of multiphase flow occurrence caused by cavitation during mineral oil flow

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F24%3A10256014" target="_blank" >RIV/61989100:27230/24:10256014 - isvavai.cz</a>

Result on the web

<a href="https://pubs.aip.org/aip/pof/article/36/11/113377/3322476/Experimental-study-of-multiphase-flow-occurrence" target="_blank" >https://pubs.aip.org/aip/pof/article/36/11/113377/3322476/Experimental-study-of-multiphase-flow-occurrence</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0237338" target="_blank" >10.1063/5.0237338</a>

Result language

angličtina

Original language name

Experimental study of multiphase flow occurrence caused by cavitation during mineral oil flow

Original language description

The article focuses on the experimental determination of the amount of released gas due to cavitation using an optical evaluation method. Cavitation is induced by the mineral oil flow through a throttle valve which characterizes commonly used valves in oil hydraulic systems. Cavitation zones are influenced by the defined experimental conditions. The influence of flow velocity, downstream pressure, and valve displacement on the development of gas phase due to cavitation is evaluated. Depending on the defined experimental conditions and the throttle valve displacement, a specific amount of released gas phase is monitored in the assembled observation window. The results give an overview of the amount of gas phase in the form of the bubble size distributions, volume and mass fractions that are released from the mineral oil when cavitation occurs under the defined experimental conditions. With respect to empirically acquired data, it can be said that the volume and mass fraction evolution of released gas phase, depending on the cavitation number, can be suitably described by a power law with an appropriate order of scaling. At the same time, a change in the determined curves during the initial phase of cavitation is found. Based on measured data, it can also be said that depending on the experimental conditions, up to 1 vol. % of air is present in the assembled observation window. It is also determined that up to 8% of air is released from the dissolved state depending on the achieved experimental conditions.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20300 - Mechanical engineering

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physics of Fluids

ISSN

1070-6631

e-ISSN

1089-7666

Volume of the periodical

36

Issue of the periodical within the volume

11

Country of publishing house

US - UNITED STATES

Number of pages

19

Pages from-to

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UT code for WoS article

001364205000006

EID of the result in the Scopus database

2-s2.0-85210314719