Representing Urban Geometries for Unstructured Mesh Generation
10.1016/j.proeng.2016.11.044
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/97528
Tipus de documentArticle
Data publicació2016
EditorElsevier
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
ProjecteHiPerMeGaFlowS - High-Performance Curved Meshing and Unstructured High-Order Galerkin Solvers for High-Fidelity Flow Simulation (EC-H2020-658853)
GrowSmarter - GrowSmarter (EC-H2020-646456)
GrowSmarter - GrowSmarter (EC-H2020-646456)
Abstract
We 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.
CitacióGargallo-Peiró, Abel; Folch, Arnau; Roca, Xevi. Representing Urban Geometries for Unstructured Mesh Generation. "Procedia Engineering", 2016, vol. 163, p. 175-185.
ISSN1877-7058
Versió de l'editorhttp://www.sciencedirect.com/science/article/pii/S1877705816333495
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Representing ur ... ctured mesh generation.pdf | 14,61Mb | Visualitza/Obre |