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<p>The temperature and density effects for the cavitation behavior around the NACA66 hydrofoil are numerically investigated. It is modeled as a 3D unsteady multiphase flow where the Schnerr-Sauer cavitation model is used for the phase change with the LES turbulence model. The effects of hydrofoil surface temperature and fluid density on the cavitation behavior are studied under different conditions. For the different temperatures, the low temperature [0 °C], standard temperature [20 °C], and high temperature [60 °C] are considered. For the density effects, only two fluids are considered (water and saltwater). The interactions between the surface and the fluid temperature are investigated using the energy equation during the cavitation flow. In numerical results, the cavity length increases as the surface temperature increases. The cavity formation plays an important role in the heat transfer between the hydrofoil surface and the liquid temperature. For the density effects, the cavity growth in saltwater is more restricted because the saltwater is denser and has a lower vapor pressure than that of water.</p>

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Parametric study of cavitation flow around NACA66 hydrofoil: Temperature and density effects

  • 期刊论文

  • 发表日期：

    2025年12月6日

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  • Vadivelu Karthik,
  • Jang-Chang Lee

摘要

The temperature and density effects for the cavitation behavior around the NACA66 hydrofoil are numerically investigated. It is modeled as a 3D unsteady multiphase flow where the Schnerr-Sauer cavitation model is used for the phase change with the LES turbulence model. The effects of hydrofoil surface temperature and fluid density on the cavitation behavior are studied under different conditions. For the different temperatures, the low temperature [0 °C], standard temperature [20 °C], and high temperature [60 °C] are considered. For the density effects, only two fluids are considered (water and saltwater). The interactions between the surface and the fluid temperature are investigated using the energy equation during the cavitation flow. In numerical results, the cavity length increases as the surface temperature increases. The cavity formation plays an important role in the heat transfer between the hydrofoil surface and the liquid temperature. For the density effects, the cavity growth in saltwater is more restricted because the saltwater is denser and has a lower vapor pressure than that of water.