Turbulent Hydrofoil Cavitation Simulations : Applications of RANS with Eddy Viscosity and Interfacial Turbulence Damping and LES
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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28
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Journal of Marine Science and Engineering, Volume 13, issue 12
Abstract
The performance of various turbulence modelling methods for simulating cavitating flow over a hydrofoil was investigated. VOF mixture modelling was applied for the multiphase flow, along with a standard two-equation turbulence model, a hybrid RANS-LES method, and a wall-modeled LES approach. The simulations were conducted in a numerical cavitation tank with experimental data available for a range of Reynolds numbers and cavitation conditions. A Reboud damping for eddy viscosity was applied (hereafter referred to as SST-R). A less common approach, incorporating interfacial turbulence damping based on physical arguments regarding the wall-like behavior of phase interfaces, was also applied (referred to here as SST-D). Our results indicate that the standard RANS method fails to predict the breakdown of lift with decreasing cavitation numbers, a phenomenon observed in the experiments and in earlier studies. Incorporating turbulence damping at the cavity interface or directly on the eddy viscosity improves predictions for both URANS and hybrid RANS-LES methods. Both the SST-D and SST-R agreed well with available experimental data, and the LES method consistently provided accurate results across all numerical grids.Description
Publisher Copyright: © 2025 by the authors.
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Viitanen, V, Peltonen, P, Nuutinen, M, Hallander, J & Siikonen, T 2025, 'Turbulent Hydrofoil Cavitation Simulations : Applications of RANS with Eddy Viscosity and Interfacial Turbulence Damping and LES', Journal of Marine Science and Engineering, vol. 13, no. 12, 2311. https://doi.org/10.3390/jmse13122311