A numerical study of steady 2D flow around NACA 0015 and NACA 0012 hydrofoil with free surface using VOF method
1 Laboratory of Aero-Hydrodynamics Naval, University of Sciences and Technology of Oran-Mohamed Boudiaf, P. O. 1505 El-Mnaouar Oran, Algeria
2 Laboratory of Aeronautics and Propulsive Systems, University of Sciences and Technology of Oran-Mohamed Boudiaf, P.O. 1505 El-Mnaouar Oran, Algeria
a Corresponding author: firstname.lastname@example.org
Published online: 6 May 2015
Accurate simulation of turbulent free surface flows around surface ships has a central role in the optimal design of such naval vessels. The flow problem to be simulated is rich in complexity and poses many modeling challenges because of the existence of breaking waves around the ship hull, and because of the interaction of the two-phase flow with the turbulent boundary layer. In this paper, our goal is to estimate the lift and drag coefficients for NACA 0012 of hydrofoil advancing in calm water under steady conditions with free surface and emerged NACA 0015. The commercial CFD software FLUENT version 14 is used for the computations in the present study. The calculated grid is established using the code computer GAMBIT 2.3.26.The shear stress k-ωSST model is used for turbulence modeling and the volume of fluid technique is employed to simulate the free-surface motion. In this computation, the second order upwind scheme is used for discretizing the convection terms in the momentum transport equations, the Modified HRIC scheme for VOF discretisation. The results obtained compare well with the experimental data.
© Owned by the authors, published by EDP Sciences, 2015
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