A numerical study of steady 2D flow around NACA 0015 and NACA 0012 hydrofoil with free surface using VOF method

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 beca...

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Bibliographic Details
Published in:EPJ Web of conferences 2015-01, Vol.92, p.02001-1-02001-6
Main Authors: Adjali, Saadia, Belkadi, Mustapha, Aounallah, Mohammed, Imine, Omar
Format: Article
Language:English
Subjects:
Boundary layer
Breaking waves
Computation
Computational fluid dynamics
Computer simulation
Convection
Drag coefficients
Fluid flow
Free surfaces
Hydrofoils
Mathematical models
Naval vessels
Shear stress
Surface motion
Turbulence
Turbulent boundary layer
Turbulent flow
Two dimensional flow
Two phase flow
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Summary: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- omega SST 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.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/20159202001