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dc.contributor.authorGargallo-Peiró, Abel
dc.contributor.authorFolch, Arnau
dc.contributor.authorRoca, Xevi
dc.contributor.otherBarcelona Supercomputing Center
dc.identifier.citationGargallo-Peiró, Abel; Folch, Arnau; Roca, Xevi. Representing Urban Geometries for Unstructured Mesh Generation. "Procedia Engineering", 2016, vol. 163, p. 175-185.
dc.description.abstractWe present a robust and automatic method to generate an idealized surface geometry of a city landscape ready to be meshed for computer simulations. The city geometry is idealized for non viscous flow simulations and targets two main geometrical features: the topography and the city blocks. The procedure is fully automatic and demands no human interaction given the following source data: the city cadastre, a Digital Elevation Model (DEM) of all the target domain, and Light Detection And Ranging (LiDAR) data of the domain region covered by the cadastre. The geometry representation takes three main steps. First, a 2D mesh of the cadastre is generated, where the elements are marked according to street and block regions. Second, using a DEM of the city landscape the topography surface mesh is generated by finding the best surface mesh in the least-squares sense obtained by deforming the previous 2D mesh. Third, we extrude the block facades and we compute a planar ceiling taking into account all the buildings belonging to that city block. We describe the applicability of the geometry representation by presenting the work-flow required to generate an unstructured mesh valid for non-viscous flow or transport simulations. Finally, we illustrate the main application by obtaining a surface and tetrahedral mesh for the city of Barcelona in Spain.
dc.description.sponsorshipThis work has been developed in the context of the EU H2020 GrowSmarter project which has Barcelona as one of the three lighthouse cities. The work of the last author was supported by the European Commission through the Marie Sklodowska-Curie Actions (HiPerMeGaFlows project).
dc.format.extent11 p.
dc.rightsAttribution-NonCommercial-NoDerivs 4.0 International License
dc.subjectÀrees temàtiques de la UPC::Enginyeria biomèdica
dc.subject.lcshGeometry--Data processing
dc.subject.lcshComputer simulation
dc.subject.otherSurface mesh generation
dc.subject.otherUnstructured mesh generation
dc.subject.otherMesh for simulation
dc.subject.otherUrban area mesh
dc.subject.otherMicroscale CFD
dc.titleRepresenting Urban Geometries for Unstructured Mesh Generation
dc.subject.lemacGeometria computacional
dc.subject.lemacSimulació per ordinador
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/658853/EU/High-Performance Curved Meshing and Unstructured High-Order Galerkin Solvers for High-Fidelity Flow Simulation/HiPerMeGaFlowS
upcommons.citation.publicationNameProcedia Engineering

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