Application of an improved semi-Lagrangian procedure to fully-nonlinear simulation of sloshing in non-wall-sided tanks. (June 2015)

• Record Type: Journal Article
• Authors: Zhang, Chongwei
• Is Part Of: Applied ocean research. Volume 51(2015:Jun.)
• Page Start: 74
• Page End: 92
• Publication Date: 2015-06
• Subjects: Sloshing -- Non-wall-sided tanks -- Semi-Lagrangian -- Mixed-Euler–Lagrangian -- Boundary element method -- Free surface waves; Ocean engineering -- Periodicals; 620.416205
• DOI: 10.1016/j.apor.2015.03.001
• Languages: English
• ISSNs: 0141-1187

Abstract

Highlights: An improved semi-Lagrangian procedure is introduced for updating fully-nonlinear free surface. The improved procedure removes 'vertical-wall' limitation of standard semi-Lagrangian procedure. Coupling with BEM, the improved procedure is applied to simulating fully-nonlinear sloshing waves in non-wall-sided tanks. Featured phenomena of 2D and 3D sloshing waves in wedged tanks are observed. 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.