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http://dx.doi.org/10.5574/JAROE.2016.2.2.048

Numerical Investigation of Anti-Diffusion Source Term for Free-Surface Wave Flow  

Park, Sunho (Dept. of Ocean Engineering, Korea Maritime and Ocean University)
Lee, Heebum (Research Institute of Marine Systems Engineering, Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
Rhee, Shin Hyung (Research Institute of Marine Systems Engineering, Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
Publication Information
Journal of Advanced Research in Ocean Engineering / v.2, no.2, 2016 , pp. 48-60 More about this Journal
Abstract
Accurate simulation of free-surface wave flows around a ship is very important for better hull-form design. In this paper, a computational fluid dynamics (CFD) code which is based on the open source libraries, OpenFOAM, was developed to predict the wave patterns around a ship. Additional anti-diffusion source term for minimizing a numerical diffusion, which was caused by convection differencing scheme, was considered in the volume-fraction transport equation. The influence of the anti-diffusion source term was tested by applying it to free-surface wave flow around the Wigley and KCS model ships. In results, the wave patterns and hull wave profiles of the Wigley and KCS model ships for various anti-diffusion coefficients showed quite close patterns. While, the band width of the water volume-fraction values between 0.1 to 0.9 at the Wigley and KCS model hull surfaces was narrowed by considering the anti-diffusion term. From the results, anti-diffusion source term decreased free-surface smearing.
Keywords
Free-surface Smearing; Free-surface Wave Flow; Anti-diffusion Source Term; Computational Fluid Dynamics;
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Times Cited By KSCI : 3  (Citation Analysis)
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