9th International Symposium on Cavitation | |
Numerical 3D analysis of cloud cavitation shedding frequency on a circular leading edge hydrofoil with a barotropic cavitation model | |
Blume, M.^1 ; Skoda, R.^1 | |
Department of Hydraulic Fluid Machinery, Ruhr-Universität Bochum, Universitätsstr. 150, Bochum | |
44801, Germany^1 | |
关键词: Cavitation model; Cavitation number; Cloud cavitations; Cloud structure; Comparative simulation; Grid sensitivity; Low Mach numbers; Shedding frequencies; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012146/pdf DOI : 10.1088/1742-6596/656/1/012146 |
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来源: IOP | |
【 摘 要 】
A compressible density-based time-explicit low Mach number consistent viscous flow solver is utilised in combination with a barotropic cavitation model for the analysis of cloud cavitation on a circular leading edge (CLE) hydrofoil. For 5° angle of attack, cloud structure and shedding frequency for different cavitation numbers are compared to experimental data. A strong grid sensitivity is found in particular for high cavitation numbers. On a fine grid, a very good agreement with validation data is achieved even without explicit turbulence model. The neglect of viscous effects as well as a two-dimensional set-up lead to a less realistic prediction of cloud structures and frequencies. Comparative simulations with the Sauer-Schnerr cavitation model and modified pre-factors of the mass transfer terms underestimate the measured shedding frequency.
【 预 览 】
Files | Size | Format | View |
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Numerical 3D analysis of cloud cavitation shedding frequency on a circular leading edge hydrofoil with a barotropic cavitation model | 1069KB | download |