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Ara es mostren els items 82-101 de 116

    • Nuevo modelo discreto multiescala (DM) para análisis no-lineales de materiales compuestos 

      Zaghi, Stefano; Martínez García, Javier; Rossi, Riccardo (2018-10-15)
      Article
      Accés obert
      En los últimos años el estudio del comportamiento de los materiales a nivel microscópico ha aumentado significativamente en términos de diseño de materiales de altas prestaciones. A pesar de los recientes avances de ...

    • Numerical and experimental analysis of the structural performance of AM components built by fused filament fabrication 

      Dialamishabankareh, Narges; Chiumenti, Michele; Cervera Ruiz, Miguel; Rossi, Riccardo; Chasco, Uxue; Domingo, Miquel (Springer, 2021-03)
      Article
      Accés restringit per política de l'editorial
      This work analyses the performance of parts built by Additive Manufacturing (AM) using Fused Filament Fabrication (FFF) demonstrating the correlation between the printing orientation and structural performance. FFF components ...

    • Numerical and experimental study of overtopping and failure of rockfill dams 

      Larese De Tetto, Antonia; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio; Toledo Municio, Miguel Ángel; Morán Moya, Rafael; Campos, Hibber (2015-08)
      Article
      Accés restringit per política de l'editorial
      This paper aims to present and validate a numerical technique for the simulation of the overtopping and onset of failure in rockfill dams due to mass sliding. This goal is achieved by coupling a fluid dynamic model for the ...

    • Numerical modeling of the hydraulic performance of Oliana dam spillway using Kratos 

      Salazar, Fernando; Morán Moya, Rafael; Rossi, Riccardo; Larese De Tetto, Antonia (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Head-discharge curves in gated spillways are commonly obtained by means of the application of empirical formulations. The most popular one, recommended by SPANCOLD [1], was developed by the U.S. Army Corps of Engineers ...

    • Numerical wind tunnel for aerodynamic and aeroelastic characterization of bridge deck sections 

      Scotta, Roberto; Lazzari, Massimiliano; Stecca, Enrico; Cotela Dalmau, Jordi; Rossi, Riccardo (2016-04)
      Article
      Accés restringit per política de l'editorial
      The aim of the present study is to propose a reliable engineering procedure to analyze bridges subjected to wind loads by-passing the expensive wind tunnel tests thanks to numerical simulations. These exploit Kratos, a ...

    • On the application of two-fluid flows solver to the casting problem 

      Kamran, Kazem; Rossi, Riccardo; Dadvand, Pooyan; Idelsohn Barg, Sergio Rodolfo (Springer, 2014)
      Capítol de llibre
      Accés restringit per política de l'editorial
      This book presents and discusses mathematical models, numerical methods and computational techniques used for solving coupled problems in science and engineering. It takes a step forward in the formulation and solution of ...

    • On the use of ensemble averaging techniques to accelerate the Uncertainty Quantification of CFD predictions in wind engineering 

      Tosi, Riccardo; Núñez Corbacho, Marc; Pons Prats, Jordi; Principe, Ricardo Javier; Rossi, Riccardo (2022-09)
      Article
      Accés obert
      In this work we focus on reducing the wall clock time required to compute statistical estimators of highly chaotic incompressible flows on high performance computing systems. Our approach consists of replacing a single ...

    • On the validation of the particle finite element method (PFEM) for complex engineering fluid flow problems 

      Larese De Tetto, Antonia; Rossi, Riccardo; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (TU Delft, 2006)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Several comparisons between experiments and computational models are presented in the following pages. The objective is to verify the ability of Particle Finite Elements Methods (PFEM) [1] [2] to reproduce hydraulic phenomena ...

    • Optimization-based level-set re-initialization: a robust interface preserving approach in multiphase problems 

      Hashemi, Alireza; Hashemi, Mohammad Reza; Ryzhakov, Pavel; Rossi, Riccardo (Elsevier, 2024-02)
      Article
      Accés obert
      In spite of its overall efficiency and robustness for capturing the interface in multiphase fluid dynamics simulations, the well-known shortcoming of the level-set method is associated with the lack of a systematic approach ...

    • Parallel adaptive mesh refinement for incompressible flow problems 

      Rossi, Riccardo; Cotela Dalmau, Jordi; Lafontaine, Nelson Maireni; Dadvand, Pooyan; Idelsohn Barg, Sergio Rodolfo (Elsevier, 2013-07)
      Article
      Accés obert
      The present article describes a simple element-driven strategy for the conforming refinement of simplicial finite element meshes in a distributed environment. The proposed algorithm is effective both for local adaptive ...

    • Parallel adaptive mesh refinement for incompressible flow problems 

      Cotela Dalmau, Jordi; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio; Lafontaine, Nelson Maireni; Idelsohn Barg, Sergio Rodolfo (2011)
      Text en actes de congrés
      Accés obert
      We present an algorithm for the solution of the incompressible Navier- Stokes equations combined with local refinement of the mesh based on an error estimation. Our solution strategy is based on well-established CFD ...

    • Physical and numerical modelization of the behavior of rockfi ll dams during overtopping scenarios 

      Larese De Tetto, Antonia; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio; Toledo Municio, Miguel Ángel (CRC Press, 2011)
      Text en actes de congrés
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      In recent years the technology on embankments dams has developed sensibly due to the advances in soil mechanic, and in all related sciences. Nevertheless their vulnerability to overtopping is still an open theme of discussion. ...

    • Physical and numerical modelization of the behaviour of rockfill dams during overtopping scenarios 

      Larese De Tetto, Antonia; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio; Toledo Municio, Miguel Ángel (CRC Press. Taylor & Francis Group, 2010)
      Capítol de llibre
      Accés restringit per política de l'editorial

    • Possibilities of the particle finite element method in computational mechanics 

      Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Celigueta Jordana, Miguel Ángel; Rossi, Riccardo; Latorre, Salvador (2010)
      Report de recerca
      Accés obert
      We present some developments in the formulation of the Particle Finite Element Method (PFEM) for analysis of complex coupled problems in fluid and solid mechanics accounting for fluid-structure interaction and coupled ...

    • Procedimiento de diseño de protecciones tipo repié para evitar la rotura por deslizamiento en masa de presas de escollera sometidas a percolaciones extremas 

      Morán, Rafael; Alves, Ricardo; Toledo, Miguel Ángel; Larese De Tetto, Antonia; Salazar, Fernando; Rossi, Riccardo (Marcombo, 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      La demanda de seguridad en infraestructuras críticas ha aumentado en los últimos años, especialmente en los países con mayor nivel de desarrollo económico y social. En estos países, el control del estado de la seguridad ...

    • Realization of CAD-integrated shell simulation based on isogeometric B-Rep analysis 

      Teschemacher, Tobias; Bauer, Anna; Oberbichler, Thomas; Breitenberger, Micheal; Rossi, Riccardo; Wüchner, Roland; Bletzinger, Kai Uwe (Springer, 2018-12)
      Article
      Accés obert
      An entire design-through-analysis workflow solution for isogeometric B-Rep analysis (IBRA), including both the interface to existing CADs and the analysis procedure, is presented. Possible approaches are elaborated for the ...

    • Regularization of first order computational homogenization for multiscale analysis of masonry structures 

      Petracca, Massimo; Pelà, Luca; Rossi, Riccardo; Oller Martínez, Sergio Horacio; Camata, Guido; Spacone, Enrico (2016-02)
      Article
      Accés obert
      This paper investigates the possibility of using classical first order computational homogenization together with a simple regularization procedure based on the fracture energy of the micro-scale-constituents. A generalized ...

    • Safety analysis of rockfill dams during overspill phenomena 

      Larese De Tetto, Antonia; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (Bulgarian Committee on Large Dams, 2008)
      Text en actes de congrés
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      An increasing interest is rising on the study of rockfill embankment dams during overspilling. Design criteria of earth dams are being reviewed in many countries to guarantee an increasing safety level in front of an ...

    • Scalable system for large unstructured mesh simulation 

      Pasenau, Miguel; Dadvand, Pooyan; Rossi, Riccardo; Cotela Dalmau, Jordi; Coll, Abel; Oñate Ibáñez de Navarra, Eugenio (Barcelona Supercomputing Center, 2011)
      Text en actes de congrés
      Accés obert
      Dealing with large simulation is a growing challenge. Ideally for the wellparallelized software prepared for high performance, the problem solving capability depends on the available hardware resources. But in practice ...

    • Simulating complex problems in civil engineering: the particle finite element method and beyond 

      Rossi, Riccardo; Larese De Tetto, Antonia; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial