An Immersed Boundary Method OpenFOAM Solver for Structure - Two-phase Flow Interaction
Main Article Content
Abstract
In this study, a numerical solver has been developed for simulating the interaction of solid bodies with two-phase flow. The simplified direct forcing method is adopted to describe the presence of structures in flow, combining with the Pressure-Implicit Split-Operator (PISO) algorithm to address the velocity-pressure coupling in Navier-Stokes equations. The fluid-fluid interface reconstruction is performed by an advanced free-surface capturing model based on the volume-of-fluid (VOF) model, thus higher interface resolution can be achieved without the need of other special treatment. The computational mesh is distributed more efficiently and economically at the interested regions, e.g. fluid-fluid interface/solid-fluid interfaces, through an adaptive mesh refinement process, which significantly reduces computation time, while maintains excellent accuracy, demonstrated by simulation results involving surface breakup, water impact, and bodies – free surface interaction.
Keywords
Immersed boundary method, Volume of Fluid, Adaptive mesh refinement, Two-phase flow
Article Details
References
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[3] OpenCFD Ltd., http://www.opencfd.co.uk.
[4] A. Benek, P.G. Burning, J.L. Steger, A 3D Chimera grid embedding technique; AIAA Paper, (1985) 85-1523.
[5] H.C. Chen, T. Liu, Turbulent flow induced by full-scale ship in harbor; J. Eng. Mech., 125 (1999) 827-835.
[6] P.M. Carrica, R.V. Wilson, F. Stern, An unsteady single-phase level set method for viscous free surface flows; Int. J. Numer. Methods Fluids, 53 (2007) 229-256.
[7] M. Uhlmann, An immersed boundary method with direct forcing for the simulation of particulate flows; J. Comput. Phys., 209 (2005) 448-476.
[8] E. Constant, C. Li, J. Favier, M. Melidi, P. Meliga, E. Serre, Implementation of a Discrete Immersed Boundary Method in Openfoam; arXiv:1609.04364.
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[11] M. Greenhow, S. Moyo, Water entry and exit of horizontal circular cylinders; Philos. Trans. Math. Phys. Eng. Sci., 355 (1997) 551-563.
[12] P. Lin, A fixed-grid model for simulation of a moving body in free surface flows; Comput. Fluids, 36 (2007) 549-561.
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[15] C.S. Peskin, Numerical Analysis of blood flow in the heart; J. Comput. Phys., 25 (220) 250-252, 1977.
[16] R. Lafaurie, B. Nardone, C. Scardovelli, R. Zaleski, S. Zanetti, Modelling merging and fragmentation in multiphase flows with SURFER; J. Comput. Phys., 113 (1994) 147-174.