TY - JOUR

T1 - Effect of a textured surface on the occurrence and development of cavitation on the hydrofoil

AU - Skripkin, Sergey G.

AU - Starinskiy, Sergey V.

AU - Tsoy, Mikhail A.

AU - Vasiliev, Mikhail M.

AU - Kravtsova, Aleksandra Yu.

N1 - ACKNOWLEDGMENTS: The experimental study and the frequency analysis of integral characteristics as well as the analysis of the roughness influence on cavitation were funded by the grant from the Russian Science Foundation (Project No. 19-79-10217); the laser processing of materials, search for treatment conditions, and surface analysis were financially supported by the Russian Science Foundation (Project No. 18-79-10119).

PY - 2023/2/1

Y1 - 2023/2/1

N2 - An experimental study of the cavitation flow around the National Advisory Committee for Aeronautics 0012 hydrofoil with different surface morphology was carried out in this work. The surface morphology was set by modern laser ablation technology. The average values and intensity of vapor-gas cavities were determined. It has been revealed that laser texturing delays the emerging cavitation and somewhat decreases its intensity at higher cavitation numbers. A decrease in the cavitation number leads to an increase in its intensity for a smooth hydrofoil in comparison with a rough one, which is also expressed in an increase in the frequency of cavities. The paper presents a comparison of the flow regime with equal cavitation numbers, which clearly describes the features of the development of a vapor-gas cavity on the suction side of the foil with different surface morphologies. The paper provides an explanation of the reasons for the influence of surface morphology on the development of cavities.

AB - An experimental study of the cavitation flow around the National Advisory Committee for Aeronautics 0012 hydrofoil with different surface morphology was carried out in this work. The surface morphology was set by modern laser ablation technology. The average values and intensity of vapor-gas cavities were determined. It has been revealed that laser texturing delays the emerging cavitation and somewhat decreases its intensity at higher cavitation numbers. A decrease in the cavitation number leads to an increase in its intensity for a smooth hydrofoil in comparison with a rough one, which is also expressed in an increase in the frequency of cavities. The paper presents a comparison of the flow regime with equal cavitation numbers, which clearly describes the features of the development of a vapor-gas cavity on the suction side of the foil with different surface morphologies. The paper provides an explanation of the reasons for the influence of surface morphology on the development of cavities.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85149401463&origin=inward&txGid=d1975a2ac8bbf3b7daf1ff944776631b

U2 - 10.1063/5.0136468

DO - 10.1063/5.0136468

M3 - Article

VL - 35

JO - Physics of Fluids

JF - Physics of Fluids

SN - 1070-6631

IS - 2

M1 - 025109

ER -