Application of an improved semi-Lagrangian procedure to fully-nonlinear simulation of sloshing in non-wall-sided tanks |
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| Institution: | 1. Research and Innovation Centre, Indian Register of Shipping, Mumbai, India;2. Department of Ocean Engineering and Naval Architecture, Indian Institute of Technology, Kharagpur, India;1. Structural Engineering Research Center, International Institute of Earthquake Engineering and Seismology (IIEES), No. 21, Arghavan St., North Dibajee, Farmanieh, Tehran, Iran;2. International Institute of Earthquake Engineering and Seismology, Tehran, Iran |
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| Abstract: | The semi-Lagrangian procedure is widely used for updating the fully-nonlinear free surface in the time domain. However, this procedure is only available to cases when the body surface is vertical near the waterline. Present study introduces an improved semi-Lagrangian procedure which removes this ‘vertical-wall’ limitation. Coupling with the boundary element method, the improved semi-Lagrangian procedure is applied to the simulation of fully-nonlinear sloshing waves in non-wall-sided tanks. From the result comparison with the open source CFD software OpenFOAM, it is confirmed that this numerical scheme could guarantee a sufficient accuracy. Further series studies on 2D and 3D fully-nonlinear sloshing waves in wedged tanks are performed. Featured phenomena are observed which are distinct from those in wall-sided tanks. |
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| Keywords: | Sloshing Non-wall-sided tanks Semi-Lagrangian Mixed-Euler–Lagrangian Boundary element method Free surface waves |
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