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      A Consistent Spatially Adaptive Smoothed Particle Hydrodynamics Method for Fluid-Structure Interactions

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          Abstract

          A new consistent, spatially adaptive, smoothed particle hydrodynamics (SPH) method for Fluid-Structure Interactions (FSI) is presented. The method combines several attributes that have not been simultaneously satisfied by other SPH methods. Specifically, it is second-order convergent; it allows for resolutions spatially adapted with moving (translating and rotating) boundaries of arbitrary geometries; and, it accelerates the FSI solution as the adaptive approach leads to fewer degrees of freedom without sacrificing accuracy. The key ingredients in the method are a consistent discretization of differential operators, a \textit{posteriori} error estimator/distance-based criterion of adaptivity, and a particle-shifting technique. The method is applied in simulating six different flows or FSI problems. The new method's convergence, accuracy, and efficiency attributes are assessed by comparing the results it produces with analytical, finite element, and consistent SPH uniform high-resolution solutions as well as experimental data.

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          Most cited references48

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          von Neumann stability analysis of smoothed particle hydrodynamics—suggestions for optimal algorithms

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            Simulating Free Surface Flows with SPH

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              Modeling Low Reynolds Number Incompressible Flows Using SPH

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                Author and article information

                Journal
                08 March 2018
                Article
                1803.03374
                782fd661-82ff-4afc-a06a-e40e15a1d00a

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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                Custom metadata
                27 pages, 17figures
                physics.flu-dyn physics.comp-ph

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