Search results for "Multi-block"

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A multi-domain approach for smoothed particle hydrodynamics simulations of highly complex flows

2018

Abstract An efficient and accurate method is proposed to solve the incompressible flow momentum and continuity equations in computational domains partitioned into subdomains in the framework of the smoothed particle hydrodynamics method. The procedure does not require any overlap of the subdomains, which would result in the increase of the computational effort. Perfectly matching solutions are obtained at the surfaces separating neighboring blocks. The block interfaces can be both planar and curved surfaces allowing to easily decompose even geometrically complex domains. The smoothing length of the kernel function is maintained constant in each subdomain, while changing between blocks where…

Computer scienceComputational MechanicsGeneral Physics and AstronomyBoundary condition010103 numerical & computational mathematics01 natural sciencesSettore ICAR/01 - IdraulicaMomentumSmoothed-particle hydrodynamicsPhysics and Astronomy (all)Smoothed particle hydrodynamicIncompressible flowComputational mechanicsMechanics of MaterialDomain decomposition0101 mathematicsMirror particleComputational MechanicConservation of massISPHBlock (data storage)Mechanical EngineeringComputer Science Applications1707 Computer Vision and Pattern RecognitionDomain decomposition methodsComputer Science Applications010101 applied mathematicsMechanics of MaterialsMulti-blockAlgorithmSmoothingComputer Methods in Applied Mechanics and Engineering
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SPH modeling of blood flow in cerebral aneurysms

Gli aneurismi cerebrali sono dilatazioni patologiche di arterie cerebrali. Queste patologie hanno un intrinseco rischio di rottura con conseguenti emorragie intracraniche. Sebbene i meccanismi di formazione, crescita e rottura degli aneurismi cerebrali non sono ancora del tutto compresi, è comunemente riconosciuto che in questi processi i fattori emodinamici giocano un ruolo molto importante. Le simulazioni numeriche possono fornire utili informazioni sull'emodinamica e possono essere usate per applicazioni cliniche. Nei tradizionali metodi numerici basati su una griglia di calcolo il processo di discretizzazione dei vasi cerebrali sui quali insiste un aneurisma è molto complesso. D’altra p…

mechanical platelet activationSmoothed particle hydrodynamics (SPH)parallel computingHemodynamicsMulti-blockOpen-boundariescerebral aneurysmsPressure Poisson EquationSettore ICAR/01 - Idraulica
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