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dc.contributor.author Storti, Mario Alberto
dc.contributor.author Paz, Rodrigo Rafael
dc.contributor.author Dalcin, Lisandro Daniel
dc.contributor.author Costarelli, Santiago Daniel
dc.contributor.author Idelsohn, Sergio Rodolfo
dc.date.available 2016-12-06T13:56:15Z
dc.date.issued 2013-03
dc.identifier.citation Storti, Mario Alberto; Paz, Rodrigo Rafael; Dalcin, Lisandro Daniel; Costarelli, Santiago Daniel; Idelsohn, Sergio Rodolfo; A FFT preconditioning technique for the solution of incompressible flow on GPUs; Pergamon-elsevier Science Ltd; Computers & Fluids; 74; 3-2013; 44-57
dc.identifier.issn 0045-7930
dc.identifier.uri http://hdl.handle.net/11336/8879
dc.description.abstract Graphic processing units have received much attention in last years. Compute-intensive algorithms operating on multidimensional arrays that have nearest neighbor dependency and/or exploit data locality can achieve massive speedups. Simulation of problems modeled by time-dependent Partial Differential Equations by using explicit time-stepping methods on structured grids is an instance of such GPU-friendly algorithms. Solvers for transient incompressible fluid flow cannot be developed in a fully explicit manner due to the incompressibility constraint. Segregated algorithms like the fractional step method require the solution of a Poisson problem for the pressure field at each time level. This stage is usually the most time-consuming one. This work discuss a solver for the pressure problem in applications using immersed boundary techniques in order to account for moving solid bodies. This solver is based on standard Conjugate Gradients iterations and depends on the availability of a fast Poisson solver on the whole domain to define a preconditioner. We provide a theoretical and numerical evidence on the advantages of our approach versus classical techniques based on fixed point iterations such as the Iterated Orthogonal Projection method.
dc.format application/pdf
dc.language.iso eng
dc.publisher Pergamon-elsevier Science Ltd
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject Graphics processing units
dc.subject Incompressible Navier–Stokes
dc.subject Poisson equation
dc.subject.classification Ciencias de la Computación
dc.subject.classification Ciencias de la Computación e Información
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title A FFT preconditioning technique for the solution of incompressible flow on GPUs
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-12-02T15:58:37Z
dc.journal.volume 74
dc.journal.pagination 44-57
dc.journal.pais Estados Unidos
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Storti, Mario Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico. Centro de Investigación de Métodos Computacionales; Argentina
dc.description.fil Fil: Paz, Rodrigo Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico. Centro de Investigación de Métodos Computacionales; Argentina
dc.description.fil Fil: Dalcin, Lisandro Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico. Centro de Investigación de Métodos Computacionales; Argentina
dc.description.fil Fil: Costarelli, Santiago Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico. Centro de Investigación de Métodos Computacionales; Argentina
dc.description.fil Fil: Idelsohn, Sergio Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico. Centro de Investigación de Métodos Computacionales; Argentina. Institució Catalana de Recerca i Estudis Avancats; España. Universidad Politecnica de Catalunya; España
dc.journal.title Computers & Fluids
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.compfluid.2012.12.019
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S004579301300008X


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)