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- W2308481648 abstract "This contribution presents new numerical simulation techniques using a Finite Element approach coupled with the Fictitious Boundary Method (FEM-FBM) for non-stationary multiphase flow configurations in 3D. The fluid solution is computed by a Finite Element multigrid solver, which has been realized in the open source CFD package FEATFLOW, while complex dynamic or static geometrical features (Figure 1) of the flow domain as well as solid particles, which interact with the surrounding fluid, are treated by the Fictitious Boundary Method [1]. This approach allows for the use of structured and unstructured computational meshes which can be static or adaptively aligned by dynamic grid deformation methods. We explain the details of how we can use the FBM to simulate flows with complex geometries that are hard to describe analytically. Stationary and time-dependent numerical examples, demonstrating the use of such geometries are provided. Numerical results for benchmark cases involving a well-known settling sphere benchmark [2, ?] are shown for validation purposes. The results show that the presented method can accurately handle the 3D particulate flow situations, reproduce the experimentally determined values and resolve the associated flow features. We show how our approach can be applied to the numerical simulation of complex particulate flows like fluidized beds (Figure 2) where a large number of particles is immersed in the fluid domain. In applications involving multiple solid particles contact forces between the particles have to be considered. We demonstrate how these contact forces can be determined in a FBM framework and how their calculation can be accelerated using GPU hardware. Figure 1: Complex geometry example Figure 2: Large-scale fluidized bed simulation" @default.
- W2308481648 created "2016-06-24" @default.
- W2308481648 creator A5059837563 @default.
- W2308481648 date "2014-08-21" @default.
- W2308481648 modified "2023-09-23" @default.
- W2308481648 title "Finite element-fictitious boundary methods for the numerical simulation of complex particulate flows" @default.
- W2308481648 cites W2160500740 @default.
- W2308481648 cites W2169702087 @default.
- W2308481648 doi "https://doi.org/10.14288/1.0044494" @default.
- W2308481648 hasPublicationYear "2014" @default.
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