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• W1791363693 abstract "Summary The accuracy of numerical simulations of free‐surface flows depends strongly on the computation of geometric quantities like normal vectors and curvatures. This geometrical information is additional to the actual degrees of freedom and usually requires a much finer discretization of the computational domain than the flow solution itself. Therefore, the utilization of a numerical method, which uses standard functions to discretize the unknown function in combination with an enhanced geometry representation is a natural step to improve the simulation efficiency. An example of such method is the NURBS‐enhanced finite element method (NEFEM), recently proposed by Sevilla et al . The current paper discusses the extension of the spatial NEFEM to space‐time methods and investigates the application of space‐time NURBS‐enhanced elements to free‐surface flows. Derived is also a kinematic rule for the NURBS motion in time, which is able to preserve mass conservation over time. Numerical examples show the ability of the space‐time NEFEM to account for both pressure discontinuities and surface tension effects and compute smooth free‐surface forms. For these examples, the advantages of the NEFEM compared with the classical FEM are shown. Copyright © 2015 John Wiley & Sons, Ltd." @default.
• W1791363693 created "2016-06-24" @default.
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• W1791363693 date "2015-12-08" @default.
• W1791363693 modified "2023-10-14" @default.
• W1791363693 title "Space-time NURBS-enhanced finite elements for free-surface flows in 2D" @default.
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• W1791363693 doi "https://doi.org/10.1002/fld.4189" @default.
• W1791363693 hasPublicationYear "2015" @default.
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