Please use this identifier to cite or link to this item: https://doi.org/10.1002/fld.2245
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dc.titleA local domain-free discretization method for simulation of incompressible flows over moving bodies
dc.contributor.authorZhou, C.H.
dc.contributor.authorShu, C.
dc.date.accessioned2014-06-16T09:29:48Z
dc.date.available2014-06-16T09:29:48Z
dc.date.issued2011-05-20
dc.identifier.citationZhou, C.H., Shu, C. (2011-05-20). A local domain-free discretization method for simulation of incompressible flows over moving bodies. International Journal for Numerical Methods in Fluids 66 (2) : 162-182. ScholarBank@NUS Repository. https://doi.org/10.1002/fld.2245
dc.identifier.issn02712091
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/54311
dc.description.abstractThis paper presents a local domain-free discretization (DFD) method for the simulation of unsteady flows over moving bodies governed by the incompressible Navier-Stokes equations. The discretization strategy of DFD is that the discrete form of partial differential equations at an interior point may involve some points outside the solution domain. All the mesh points are classified as interior points, exterior dependent points and exterior independent points. The functional values at the exterior dependent points are updated at each time step by the approximate form of solution near the boundary. When the body is moving, only the status of points is changed and the mesh can stay fixed. The issue of 'freshly cleared nodes/cells' encountered in usual sharp interface methods does not pose any particular difficulty in the presented method. The Galerkin finite-element approximation is used for spatial discretization, and the discrete equations are integrated in time via a dual-time-stepping scheme based on artificial compressibility. In order to validate the present method for moving-boundary flow problems, two groups of flow phenomena have been simulated: (1) flows over a fixed circular cylinder, a harmonic in-line oscillating cylinder in fluid at rest and a transversely oscillating cylinder in uniform flow; (2) flows over a pure pitching airfoil, a heaving-pitching airfoil and a deforming airfoil. The predictions show good agreement with the published numerical results or experimental data. © 2010 John Wiley & Sons, Ltd.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1002/fld.2245
dc.sourceScopus
dc.subjectDomain-free discretization
dc.subjectIncompressible flows
dc.subjectMoving boundaries
dc.subjectNon-boundary conforming method
dc.subjectOscillating airfoil
dc.subjectOscillating cylinder
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1002/fld.2245
dc.description.sourcetitleInternational Journal for Numerical Methods in Fluids
dc.description.volume66
dc.description.issue2
dc.description.page162-182
dc.description.codenIJNFD
dc.identifier.isiut000289865900002
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