A Micropolar Material Model for Turbulent SPH Fluids

dc.contributor.authorBender, Janen_US
dc.contributor.authorKoschier, Danen_US
dc.contributor.authorKugelstadt, Tassiloen_US
dc.contributor.authorWeiler, Marcelen_US
dc.contributor.editorBernhard Thomaszewski and KangKang Yin and Rahul Narainen_US
dc.date.accessioned2017-12-31T10:44:39Z
dc.date.available2017-12-31T10:44:39Z
dc.date.issued2017
dc.description.abstractIn this paper we introduce a novel micropolar material model for the simulation of turbulent inviscid fluids. The governing equations are solved by using the concept of Smoothed Particle Hydrodynamics (SPH). As already investigated in previous works, SPH fluid simulations su er from numerical di usion which leads to a lower vorticity, a loss in turbulent details and finally in less realistic results. To solve this problem we propose a micropolar fluid model. The micropolar fluid model is a generalization of the classical Navier- Stokes equations, which are typically used in computer graphics to simulate fluids. In contrast to the classical Navier-Stokes model, micropolar fluids have a microstructure and therefore consider the rotational motion of fluid particles. In addition to the linear velocity field these fluids also have a field of microrotation which represents existing vortices and provides a source for new ones. However, classical micropolar materials are viscous and the translational and the rotational motion are coupled in a dissipative way. Since our goal is to simulate turbulent fluids, we introduce a novel modi ed micropolar material for inviscid fluids with a non-dissipative coupling Our model can generate realistic turbulences, is linear and angular momentum conserving, can be easily integrated in existing SPH simulation methods and its computational overhead is negligible.en_US
dc.description.sectionheadersPapers I: SPH Fluids
dc.description.seriesinformationEurographics/ ACM SIGGRAPH Symposium on Computer Animation
dc.identifier.doi10.1145/3099564.3099578
dc.identifier.isbn978-1-4503-5091-4
dc.identifier.issn1727-5288
dc.identifier.pagesJan Bender, Dan Koschier, Tassilo Kugelstadt, and Marcel Weiler-Computing methodologies Physical simulation; Smoothed Particle Hydrodynamics, micropolar fluids, turbulence, incompressible fluids
dc.identifier.urihttps://doi.org/10.1145/3099564.3099578
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1145/3099564-3099578
dc.publisherACMen_US
dc.subjectComputing methodologies Physical simulation
dc.subjectSmoothed Particle Hydrodynamics
dc.subjectmicropolar fluids
dc.subjectturbulence
dc.subjectincompressible fluids
dc.titleA Micropolar Material Model for Turbulent SPH Fluidsen_US
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