Spectral Analysis of Pressure, Noise and Vibration Velocity Measurement in Cavitation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F17%3A10236355" target="_blank" >RIV/61989100:27230/17:10236355 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.degruyter.com/downloadpdf/j/msr.2017.17.issue-6/msr-2017-0030/msr-2017-0030.pdf" target="_blank" >https://www.degruyter.com/downloadpdf/j/msr.2017.17.issue-6/msr-2017-0030/msr-2017-0030.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/msr-2017-0030" target="_blank" >10.1515/msr-2017-0030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spectral Analysis of Pressure, Noise and Vibration Velocity Measurement in Cavitation

Popis výsledku v původním jazyce

The article deals with experimental investigation of water cavitation in the convergent-divergent nozzle of rectangular cross-section. In practice, a quick and simple determination of cavitation is essential, especially if it is basic cavitation or cavitation generated additionally by the air being sucked. Air influences the formation, development and size of the cavity area in hydraulic elements. Removal or reduction of the cavity area is possible by structural changes of the element. In case of the cavitation with the suction air, it is necessary to find the source of the air and seal it. The pressure gradient, the flow, the oxygen content in the tank, and hence the air dissolved in the water, the air flow rate, the noise intensity and the vibration velocity on the nozzle wall were measured on laboratory equipment. From the selected measurements the frequency spectrum of the variation of the water flow of the cavity with cavitation without air saturation and with air saturation was compared and evaluated.

Název v anglickém jazyce

Spectral Analysis of Pressure, Noise and Vibration Velocity Measurement in Cavitation

Popis výsledku anglicky

The article deals with experimental investigation of water cavitation in the convergent-divergent nozzle of rectangular cross-section. In practice, a quick and simple determination of cavitation is essential, especially if it is basic cavitation or cavitation generated additionally by the air being sucked. Air influences the formation, development and size of the cavity area in hydraulic elements. Removal or reduction of the cavity area is possible by structural changes of the element. In case of the cavitation with the suction air, it is necessary to find the source of the air and seal it. The pressure gradient, the flow, the oxygen content in the tank, and hence the air dissolved in the water, the air flow rate, the noise intensity and the vibration velocity on the nozzle wall were measured on laboratory equipment. From the selected measurements the frequency spectrum of the variation of the water flow of the cavity with cavitation without air saturation and with air saturation was compared and evaluated.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/LM2015070" target="_blank" >LM2015070: IT4Innovations národní superpočítačové centrum</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Measurement Science Review

ISSN

1335-8871

e-ISSN

—

Svazek periodika

17

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

7

Strana od-do

250-256

Kód UT WoS článku

000416033300001

EID výsledku v databázi Scopus

2-s2.0-85035361540