An accurate SPH modeling of viscous flows around bodies at low and moderate Reynolds numbers

Simulação Numérica De Escoamentos Com Superfícies Livres Empregando O Método Weakly Compressible Smoothed Particle Hydrodynamics (Wcsph) E O Processamento Em Paralelo Com Unidades De Processamento Gráfico E a Api Cuda

“…No que diz respeito aos métodos livres de malhas, o método lagrangiano conhecido como Smoothed Particle Hydrodynamics (SPH) vem sendo largamente aplicado a problemas físicos de diversas áreas, principalmente por ter se mostrado promissor na resolução de problemas apresentando grandes deformações, explosões, materiais com interfaces móveis, fronteiras deformáveis e superfícies livres (Antuono et al, 2010Federico et al, 2012;Marrone et al, 2013). No método SPH, a discretização do domínio do problema dá-se através do emprego de partículas e as equações são discretizadas a partir da Representação Integral das funções e da Aproximação por Partículas, que representa a forma discreta da primeira representação (Liu, 2003).…”

Numerical modeling of dam-break flow impacting on flexible structures using an improved SPH–EBG method

“…It was first invented to solve astrophysical problems (Gingold and Monaghan, 1977;Lucy, 1977), and later extended to solve many other problems, especially fluid simulations (Breinlinger et al, 2013;Hu and Adams, 2007;Marrone et al, 2013;Morris et al, 1997). In SPH, a fluid is represented by a set of particles which move according to the governing equations of the fluid.…”

A novel generalized diffusive SPH model: Theoretical analysis and 3D HPC implementation

“…This boundary condition has demonstrated to be very robust and reliable (Bouscasse et al, 2013;Marrone et al, 2013Marrone et al, , 2011b. However, some drawbacks should be considered that may lead to the usage of a different boundary condition:…”

“…To this end, the expressions described in Marrone et al (2013) and Bouscasse et al (2013), to compute the force of the fluid over the boundary, are considered. Such expressions result from the momentum conservation imposition, similarly to the procedure discussed in the previous subsection, 4.3.2.…”

“…Later, Marrone et al (2011a) revisited the problem in order to provide a more robust model to perform the mirroring. Such new model was applied to a flow around a rectangular body in Marrone et al (2013). Herein a simpler approach is used, based on duplicating the Ghost particles close to the corner, halving their mass.…”