Numerical and Experimental Study of Oscillating Water Jets Injected in Submerged Conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F25%3A00601145" target="_blank" >RIV/68145535:_____/25:00601145 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/chapter/10.1007/978-3-031-72778-8_8" target="_blank" >https://link.springer.com/chapter/10.1007/978-3-031-72778-8_8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-031-72778-8_8" target="_blank" >10.1007/978-3-031-72778-8_8</a>

Result language

angličtina

Original language name

Numerical and Experimental Study of Oscillating Water Jets Injected in Submerged Conditions

Original language description

This paper studies the bulk effects generated during the underwater injection of self-excited oscillating water jets using a designed and manufactured in-house fluidic nozzle. As a first step to predict and analyze the process, transient tridimensional turbulent flows simulations were carried out, wherein two classic turbulent models (RANS and LES), with mesh refinement, were compared regarding their detailed description of the jets-induced vorticity and velocity fields. The submerged jet oscillation frequency was computed through CFD post-processing tools and it was found to be in a good match with the frequency value experimentally estimated by means of a pressure sensor at the desired input pressure level. A liquid-vapor phase change model allowed also the numerical computation of the cavitation field evolution during the jet injection, results of which correlated qualitatively well with the cavitation clouds footage recorded through the stroboscopic shadowgraph technique. Numerical and experimental results evidenced the important presence of cavitation and vorticity as constant effects of the studied process. Furthermore, submerged jet impingement to a soft plastic surface was performed to capture the added destructive potential of these effects and the final volumetric imprints were analyzed using digital microscope and computed tomography.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/GA23-05235S" target="_blank" >GA23-05235S: Study of mechanism of formation stable high-frequency oscillations generated in a liquid under high pressures</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

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

Article name in the collection

Advances in Water Jetting II

ISBN

978-3-031-72777-1

ISSN

2195-4356

e-ISSN

2195-4364

Number of pages

17

Pages from-to

93-109

Publisher name

Springer Nature Schwitzerland AG

Place of publication

Cham

Event location

Kutná Hora

Event date

Oct 17, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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