SPECIAL ISSUE: Proceedings of the Third International Symposium on Physics of Fluids (ISPF3), 15–18 June, 2009, Jiuzhaigou, China — Applications of Fluid MechanicsNo Access

NUMERICAL ANALYSIS OF HYDROFOIL NACA0015'S CAVITATION CHARACTERISTICS BASED ON THE THERMODYNAMIC EFFECTS

DEMIN LIU

State Key Laboratory of Hydro Science & Hydraulic Engineering, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

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SHUHONG LIU

State Key Laboratory of Hydro Science & Hydraulic Engineering, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

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YULIN WU

State Key Laboratory of Hydro Science & Hydraulic Engineering, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

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, and

HONGYUAN XU

State Key Laboratory of Hydro Science & Hydraulic Engineering, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

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https://doi.org/10.1142/S0217984910023967Cited by:1 (Source: Crossref)

Abstract

The present paper studies the cavitation characteristics in thermodynamic condition. The present work modifies thermodynamic cavitation mass transfer expression based on the Rayleigh-Plesset equation. The pressure difference, surface tension and thermodynamic effects are considered in new mass transfer expression on the basics of the evaporation and condensation mechanics according to the micro-kinetic theory. The hydrofoil NACA0015's thermal cavitation characteristic is calculated at 25°C, 50°C, 70°C with the improved model. The shear stress transport model is adopted as turbulence kinetic energy transport equation. The pressure coefficient is compared with experiment data at different temperatures to validate the model. The temperature difference between local temperature and ambient temperature is obtained and the cavitation volume fraction is calculated.

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