Exploració per tema "Mesh generation"

Ara es mostren els items 1-20 de 23

    • A level set-based actuator disc model for turbine realignment in wind farm simulation: meshing, convergence and applications 

      Gargallo Peiró, Abel; Revilla Mut, Gonzalo; Avila Salinas, Matías Oscar; Houzeaux, Guillaume (2022-11-24)
      Article
      Accés obert
      We present a novel meshing and simulation approach for wind farms, featuring realignment and mesh adaptation. The turbines are modeled with actuator discs, which are discretized by means of an adaptation process to represent ...

    • A new least-squares approximation of affine mappings for sweep algorithms 

      Roca Navarro, Francisco Javier; Sarrate Ramos, Josep; Huerta, Antonio (2010-06)
      Article
      Accés obert
      This paper presents a new algorithm to generate hexahedral meshes in extrusion geometries. Several algorithms have been devised to generate hexahedral meshes by projecting the cap surfaces along a sweep path. In all of ...

    • A set of algorithms to correct a geometry in order to be meshed 

      Ribo Rodriguez, Ramon; Bugeda Castelltort, Gabriel; Oñate Ibáñez de Navarra, Eugenio (2000)
      Text en actes de congrés
      Accés obert
      One of the major difficulties in meshing 3D complex geometries is to deal with non proper geometrical definitions coming from CAD systems. Typically, CAD systems don’t take care of the proper definition of the geometries ...

    • A static benchmarking for grid scheduling problems 

      Xhafa Xhafa, Fatos; Barolli, Leonard; Gonzalez S, Juan Antonio; Jura, Pawel (Institute of Electrical and Electronics Engineers (IEEE), 2009)
      Text en actes de congrés
      Accés obert
      Analysis of algorithms for Grid computing systems before deployment in real Grid infrastructures is an important issue in Grid computing domain. Due to the complexity of real Grid systems, assessing performance analysis ...

    • Active mesh coding and rate-distortion theory 

      Salembier Clairon, Philippe Jean; Martí Navarro, Eva; Pardàs Feliu, Montse (Institute of Electrical and Electronics Engineers (IEEE), 1996)
      Comunicació de congrés
      Accés obert
      This paper presents a video coding scheme for very low bit rate applications. The coding approach relies on active meshes and can be viewed as a particular case of region-based coding. The active mesh is used to efficiently ...

    • An improved algorithm to smooth graded quadrilateral meshes preserving the prescribed element size 

      Sarrate Ramos, Josep; Huerta, Antonio (2001-02)
      Article
      Accés obert
      In the generation of quadrilateral unstructured meshes, special attention is focussed to the shape of the elements. This is because it is well known that the distortion of the elements and the accuracy of the analysis are ...

    • Demonstration of a library prototype to build LoRa mesh networks for the IoT 

      Miquel Solé, Joan; Miralles Nogués, Sergi; Pueyo Centelles, Roger; Freitag, Fèlix (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés obert
      LoRa has become popular in the Internet of Things (IoT) domain as a Low Power, Wide Area Network (LPWAN) radio technology providing low-power and long-range communication. In a typical IoT application, the LoRaWAN architecture ...

    • Designing a double LoRa connectivity for the Arduino Portenta H7 

      López Pino, Daniel; Freitag, Fèlix; Selimi, Mennan (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés obert
      Machine learning is moving to the smallest computing devices. Today machine learning is applied even in tiny IoT microcontroller boards. In the IoT, LoRa is a popular communication technology to connect remote devices with ...

    • Efficient unstructured quadrilateral mesh generation 

      Sarrate Ramos, Josep; Huerta, Antonio (Wiley and Sons, 2000-09)
      Article
      Accés obert
      This work is devoted to the description of an algorithm for automatic quadrilateral mesh generation. The technique is based on a recursive decomposition of the domain into quadrilateral elements. This automatically generates ...

    • Extending LoRa networks: dynamic routing protocols and sub-GHz radio technology for very long range mesh networks: student research abstract 

      Pueyo Centelles, Roger (Association for Computing Machinery (ACM), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Sub-GHz radio technologies operating in ISM bands, such as LoRa 1 , have become very popular as the wireless data transmission mechanism for IoT applications. Their great link budget allows nodes to reach several km while ...

    • Generation of curved high-order meshes from linear meshes using the subdivision method 

      Serrano Borja, Manel (Universitat Politècnica de Catalunya, 2017-07)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat
      Realitzat a/amb:   Barcelona Supercomputing Center

    • Improving performance guarantees in wormhole mesh NoC designs 

      Panic, Milos; Hernández, Carles; Abella Ferrer, Jaume; Quiñones, Eduardo; Cazorla Almeida, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés obert
      Wormhole-based mesh Networks-on-Chip (wNoC) are deployed in high-performance many-core processors due to their physical scalability and low-cost. Delivering tight and time composable Worst-Case Execution Time (WCET) estimates ...

    • Management, design and developement of a mesh generation environment using open source software 

      Roca Navarro, Francisco Javier; Ruiz Gironès, Eloi; Sarrate Ramos, Josep (2009-06-08T08:15:56Z)
      Text en actes de congrés
      Accés obert
      In this paper we present an object oriented implementation of a general-purpose mesh generation environment for geometry-based simulations. The aim of this application is to unify available legacy code and new research ...

    • Mesh adaptation for turbine alignment in wind farm simulation 

      Revilla Mut, Gonzalo (Universitat Politècnica de Catalunya, 2022-10)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Barcelona Supercomputing Center
      An alternative approach for the mesh generation process in wind farm modeling is explained, based on metric-driven mesh adaptation to the actuator disc models of the turbines. Unlike the standard approach based treating ...

    • Mesh generation, sizing and convergence for onshore and offshore wind farm Atmospheric Boundary Layer flow simulation with actuator discs 

      Gargallo Peiró, Abel; Avila, Matias; Owen, Herbert; Prieto-Godino, Luis; Folch, Arnau (Elsevier, 2018-12)
      Article
      Accés obert
      A new mesh generation process for wind farm modeling is presented together with a mesh convergence and sizing analysis for wind farm flow simulations. The generated meshes are tailored to simulate Atmospheric Boundary Layer ...

    • On the solution of the full three-dimensional Taylor bubble problem by using a coupled Conservative Level Set - Moving Mesh method 

      Gutiérrez Álvarez, Enrique; Balcázar Arciniega, Néstor; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (Institute of Physics (IOP), 2016)
      Text en actes de congrés
      Accés obert
      The challenging problem of the full three-dimensional Taylor bubble has been addressed by using a Conservative Level Set method in order to deal with the multiphase flow. A moving mesh is used, aiming to optimize the ...

    • ShieldTester: cell-to-cell visibility test for surface occluders 

      Navazo Álvaro, Isabel; Rossignac, Jarek; Jou, J; Shariff, R (North Holland, 2003-09)
      Article
      Accés restringit per política de l'editorial
      We present a novel Cell-To-Cell Visibility (C2CV) algorithm, which given two polyhedra,A and B and a connected and oriented manifold triangle mesh, S offers a simple, fast, and conservative test for detecting when A and B ...

    • Simultaneous untangling and smoothing of quadrilateral and hexahedral meshes using an object-oriented framework 

      Ruiz-Gironés, Eloi; Roca Navarro, Francisco Javier; Sarrate Ramos, Josep; Montenegro Armas, Rafael; Escobar Sánchez, José M. (2015-02-01)
      Article
      Accés obert
      In this work, we present a simultaneous untangling and smoothing technique for quadrilateral and hexahedral meshes. The algorithm iteratively improves a quadrilateral or hexahedral mesh by minimizing an objective function ...

    • SkinningNet: two-stream graph convolutional neural network for skinning prediction of synthetic characters 

      Mosella Montoro, Albert; Ruiz Hidalgo, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés obert
      This work presents SkinningNet, an end-to-end Two-Stream Graph Neural Network architecture that computes skinning weights from an input mesh and its associated skeleton, without making any assumptions on shape class and ...

    • The receding front method applied to hexahedral mesh generation of exterior domains 

      Ruiz-Gironés, Eloi; Roca Navarro, Francisco Javier; Sarrate Ramos, Josep (2011-11-30)
      Article
      Accés obert
      Two of the most successful methods to generate unstructured hexahedral meshes are the grid-based methods and the advancing front methods. On the one hand, the grid-based methods generate high-quality hexahedra in the inner ...