Comparison of material erosion under air and submerged conditions using a high-energy self-excited modulated water jet

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F26%3A00645503" target="_blank" >RIV/68081723:_____/26:00645503 - isvavai.cz</a>

Alternative codes found

RIV/68145535:_____/26:00645503

Result on the web

<a href="https://doi.org/10.1016/j.wear.2025.206491" target="_blank" >https://doi.org/10.1016/j.wear.2025.206491</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.wear.2025.206491" target="_blank" >10.1016/j.wear.2025.206491</a>

Result language

angličtina

Original language name

Comparison of material erosion under air and submerged conditions using a high-energy self-excited modulated water jet

Original language description

This study examines the effect of the frequency of modulated water jet on material erosion in both air and submerged environments. Two prototypes of nozzles with the ability to self-excite flow oscillations, each featuring an identical outlet orifice (1 × 1 mm), were developed to modulate water jets at distinct oscillating frequency levels (from 6 to 45 kHz). Jet oscillation characteristics were predicted via computational fluid dynamics (CFD) and validated experimentally using direct pressure-sensor measurements and indirect optical frequency-monitoring techniques. Optimal standoff distance (SOD) between the selected nozzle and the target surface was found (from 10 to 15 mm). Erosion tests were conducted on pure copper samples in both air and underwater conditions. During erosion testing, flow rates (19 and 24 l/min) and pressures (80 and 140 MPa) were continuously recorded by diagnostic sensors to maintain constant hydraulic power (26 kW and 55 kW). The resulting erosion grooves formed on copper samples under air and submerged conditions by moving the nozzle above the target surface (1 mm/s) were characterized by optical profilometry and scanning electron microscopy (SEM). Quantitative analysis of removed volume, groove geometry, and surface defects was conducted to elucidate the relationship between the frequency of the modulated water jet and erosion performance. The results confirmed that an increase in the frequency of the modulated high-speed water jet significantly enhances erosion efficiency in both tested environments. However, in submerged conditions, a pronounced attenuation of the jet occurs, reflected in a lower volume of material removal. Further details are discussed in the subsequent sections of the manuscript.

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

—

OECD FORD branch

20301 - Mechanical engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2026

Confidentiality

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

Name of the periodical

Wear

ISSN

0043-1648

e-ISSN

1873-2577

Volume of the periodical

590

Issue of the periodical within the volume

April

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

22

Pages from-to

206491

UT code for WoS article

001683214200001

EID of the result in the Scopus database

2-s2.0-105028991188