Experimental and Numerical Studies into the Cavitation Impact of the Hydrofoil Surface with Different Treatments

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28645413%3A_____%2F22%3AN0000006" target="_blank" >RIV/28645413:_____/22:N0000006 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1134/S0040601522060064" target="_blank" >https://link.springer.com/article/10.1134/S0040601522060064</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1134/S0040601522060064" target="_blank" >10.1134/S0040601522060064</a>

Result language

angličtina

Original language name

Experimental and Numerical Studies into the Cavitation Impact of the Hydrofoil Surface with Different Treatments

Original language description

The experimental and numerical investigation of unsteady cavitating flow around a NACA2412 hydrofoil with chemically treated surfaces is described. The study was focused on the influence of the surface wettability on the intensity of cavitation processes. Two steel hydrofoils whose surface is treated using different methods are compared with a hydrofoil having a nontreated surface. The first of the treated hydrofoils has a 50–70-µm thick wear-resistant hydrophobic coating of tungsten carbide applied by ion-plasma deposition in a vacuum chamber. The second hydrofoil has a coating of a surfactant, octodecyamine, applied by deposition while keeping the hydrofoil in an aqueous solution. The hydrofoil with the span/chord ratio of 1.25 was tested in the cavitation tunnel. The incidence angle of the hydrofoil to the incoming flow was 8°. Numerical results were obtained using the ANSYS CFX software package with the Zwart cavitation model and the SAS-SST turbulence model. The monitored pressure fluctuations and the level of noise generated by cavitation-induced unsteady processes are estimated. It is demonstrated that additional surface treatment can help prevent unwanted phenomena in the flow path caused by cavitation. This technique does not require expensive modernization of the flow path in hydraulic machines. Numerical simulations and experiments carried out by the authors suggest that surface treatment can considerably affect the cavitation processes, and the results of studies demonstrate the need for further in-depth investigation of cavitation processes in hydraulic machines, including with the use of modern application software tools.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

20302 - Applied mechanics

Project

<a href="/en/project/EF17_049%2F0008408" target="_blank" >EF17_049/0008408: Hydrodynamic design of pumps</a><br>

Continuities

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

Publication year

2022

Confidentiality

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

Name of the periodical

Thermal Engineering

ISSN

0040-6015

e-ISSN

—

Volume of the periodical

—

Issue of the periodical within the volume

69

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

—

UT code for WoS article

000809175000003

EID of the result in the Scopus database

—