期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：240
期号：6
页码：1-6
DOI：10.1088/1755-1315/240/6/062018
出版社：IOP Publishing
摘要：The present study deals with the numerical study of the cavitation micro–jet velocity and erosion on a plane–convex hydrofoil with semicylindrical obstacle, which induces a big cluster of cavities with a strong erosive power. The proposed model predicts micro-jet velocities based on energy conservation by assuming potential and kinetic energies at the start and the end of the cavity collapses. Homogeneous mixture flow, implicit LES and Zwart-Gerber-Belamri cavitation model have been used for the numerical simulation of the unsteady cavitating flow using OpenFOAM, whilst for the micro-jet estimation, Python language coupled with OpenFOAM's calculator have been used. Results clearly show that the implemented model captures adequately the phenomenon and enables to identify attacked areas. Outcomes agree reasonably with the experimental results obtained by Escaler at the High Speed Cavitation Tunnel of the École Polytechnique Fédérale de Lausanne (EPFL). Furthermore, the proposed model has been compared with Li's and Peters' ones for a better understating of the improvements.
