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Accelerating a Coupled SPH-FEM Solver through Heterogeneous Computing for use in Fluid-Structure Interaction Problems

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dc.contributor.authorGilbert, John Nicholasen
dc.contributor.committeechairMcCue-Weil, Leigh S.en
dc.contributor.committeememberXiao, Hengen
dc.contributor.committeememberHughes, Owen F.en
dc.contributor.committeememberPatil, Mayuresh J.en
dc.contributor.departmentAerospace and Ocean Engineeringen
dc.date.accessioned2015-06-09T08:00:08Zen
dc.date.available2015-06-09T08:00:08Zen
dc.date.issued2015-06-08en
dc.description.abstractThis work presents a partitioned approach to simulating free-surface flow interaction with hyper-elastic structures in which a smoothed particle hydrodynamics (SPH) solver is coupled with a finite-element (FEM) solver. SPH is a mesh-free, Lagrangian numerical technique frequently employed to study physical phenomena involving large deformations, such as fragmentation or breaking waves. As a mesh-free Lagrangian method, SPH makes an attractive alternative to traditional grid-based methods for modeling free-surface flows and/or problems with rapid deformations where frequent re-meshing and additional free-surface tracking algorithms are non-trivial. This work continues and extends the earlier coupled 2D SPH-FEM approach of Yang et al. [1,2] by linking a double-precision GPU implementation of a 3D weakly compressible SPH formulation [3] with the open source finite element software Code_Aster [4]. Using this approach, the fluid domain is evolved on the GPU, while the CPU updates the structural domain. Finally, the partitioned solutions are coupled using a traditional staggered algorithm.en
dc.description.degreePh. D.en
dc.format.mediumETDen
dc.identifier.othervt_gsexam:5214en
dc.identifier.urihttp://hdl.handle.net/10919/52924en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectsmoothed particle hydrodynamicsen
dc.subjectmeshfree CFDen
dc.subjectfluid-structure interactionen
dc.subjectGPU computingen
dc.titleAccelerating a Coupled SPH-FEM Solver through Heterogeneous Computing for use in Fluid-Structure Interaction Problemsen
dc.typeDissertationen
thesis.degree.disciplineAerospace Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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