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- W2020089999 abstract "Sharp interface Eulerian methods are used to develop a technique for handling high speed material dynamics leading to collapse and fragmentation. Two problems are of primary interest, viz. void collapse in energetic materials and fragmentation of solids under impact; in the first case the sharp interface reconnects to itself, while in the second the sharp interface is torn apart. The challenge is to simulate using a sharp interface Eulerian approach through these topological changes and to apply boundary conditions on the immersed interfaces. Level set interface representations are combined with a modified Ghost Fluid Method to solve sharp interface dynamics in the presence of elasto-plastically deforming solid materials. A unified method of populating ghost field is developed using an adaptive least squares approach and demonstrated to be robust for severe interface deformations, including changes in topology. A parallel algorithm is used to enable solutions of large scale problems. The embedded material interfaces undergoing severe deformation while moving at a very high speed are handled efficiently and accurately in a multi-processor setting. Validation exercises, examples and benchmark calculations are presented to demonstrate the accuracy of the approach." @default.
- W2020089999 created "2016-06-24" @default.
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- W2020089999 date "2013-10-01" @default.
- W2020089999 modified "2023-10-14" @default.
- W2020089999 title "Simulation of collapse and fragmentation phenomena in a sharp interface Eulerian setting" @default.
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- W2020089999 doi "https://doi.org/10.1016/j.compfluid.2012.09.007" @default.
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