Browsing by Author "Folch, Arnau"
Now showing items 1-20 of 25
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A CFD framework for offshore and onshore wind farm simulation
Avila, Matias; Gargallo-Peiró, Abel; Folch, Arnau (IOP Publishing, 2017)
Article
Open AccessWe present a wind simulation framework for offshore and onshore wind farms. The simulation framework involves an automatic hybrid high-quality mesh generation process, a pre-processing to impose initial and boundary ... -
A Novel approach to reconstruct the plinian and co-ignimbrite phases of large eruptions - Campanian Ignimbrite
Marti, Alejandro; Folch, Arnau; Costa, Antonio; Engwell, Samantha (Barcelona Supercomputing Center, 2015-05-05)
Conference report
Open AccessReconstructing the volume and tephra dispersal from volcanic super-eruptions is necessary to assess the widespread impact of these massive events on climate, ecosystems and humans. Recent studies have demonstrated that ... -
A Parallel CFD Model for Wind Farms
Avila, Matías; Folch, Arnau; Houzeaux, Guillaume; Eguzkitza, Beatriz; Prieto, Luis; Cabezón, Daniel (Elsevier, 2013-06-01)
Article
Open AccessWe present a Computational Fluid Dynamics (CFD) modeling strategy for onshore wind farms aimed at predicting and opti- mizing the production of farms using a CFD model that includes meteorological data assimilation, complex ... -
A simplified model for bottom trawl fishing gears
Folch, Arnau; Prat Farran, Joana d'Arc; Antonijuan Rull, Josefina (2007-05-12)
Article
Open AccessComputational modeling is a valuable complementary tool to assess behavior of bottom trawl fishing gears. A simplified model of the gear that mainly affects to the net is proposed. The model is constrained to steady towing ... -
A simplified model for bottom trawl fishing gears
Folch, Arnau; Prat Farran, Joana d'Arc; Antonijuan Rull, Josefina; Sala, A.; Sardà, Francesc; Manuel Lázaro, Antonio (SARTI (Technological Development Centre of Remote Acquisition and Data processing Systems), 2008-04-08T15:55:17Z)
Article
Open Access -
A wind field downscaling strategy based on domain segmentation and transfer functions
Barcons, Jordi; Avila, Matias; Folch, Arnau (Wiley, 2018-02-06)
Article
Open AccessThis paper presents a novel methodology for mesoscale‐to‐microscale downscaling of near‐surface wind fields. The model chain consists on the Weather Research and Forecast mesoscale model and the Alya‐CFDWind microscale ... -
Beyond eruptive scenarios: assessing tephra fallout hazard from Neapolitan volcanoes
Sandri, Laura; Costa, Antonio; Selva, Jacopo; Tonini, Roberto; Macedonio, Giovanni; Folch, Arnau; Sulpizio, Roberto (Nature Publishing Group, 2016-04-12)
Article
Open AccessAssessment of volcanic hazards is necessary for risk mitigation. Typically, hazard assessment is based on one or a few, subjectively chosen representative eruptive scenarios, which use a specific combination of eruptive ... -
DISPAR: a tool to model bottom trawl fishing gears
Antonijuan Rull, Josefina; Prat Farran, Joana d'Arc; Folch, Arnau; Gualdo Sesma, Olga; Sardà, Francesc; Manuel Lázaro, Antonio (SARTI (Technological Development Centre of Remote Acquisition and Data processing Systems), 2008-04-08T16:01:20Z)
Article
Open Access -
Diurnal cycle RANS simulations applied to wind resource assessment
Barcons, Jordi; Avila, Matias; Folch, Arnau (Wiley, 2019-02)
Article
Open AccessMicroscale computational fluid dynamics (CFD) models can be used for wind resource assessment on complex terrains. These models generally assume neutral atmospheric stratification, an assumption that can lead to inaccurate ... -
FALL3D-8.0: a computational model for atmospheric transport and deposition of particles, aerosols and radionuclides – Part 2: Model validation
Prata, Andrew T.; Mingari, Leonardo; Folch, Arnau; Macedonio, Giovanni; Costa, Antonio (Copernicus Publications, 2021-01)
Article
Open AccessThis paper presents model validation results for the latest version release of the FALL3D atmospheric transport model. The code has been redesigned from scratch to incorporate different categories of species and to overcome ... -
FPLUME-1.0: An integral volcanic plume model accounting for ash aggregation
Folch, Arnau; Costa, Antonio; Macedonio, Giovannin (EGU Journals, 2016-02-02)
Article
Open AccessEruption source parameters (ESP) characterizing volcanic eruption plumes are crucial inputs for atmospheric tephra dispersal models, used for hazard assessment and risk mitigation. We present FPLUME-1.0, a steady-state 1-D ... -
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
Open AccessA 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 ... -
Model validation and data insertion with FALL3D-8.0: exploiting geostationary satellite retrievals of volcanic ash and SO2
Prata, Andrew; Mingari, Leonardo; Folch, Arnau (Barcelona Supercomputing Center, 2020-05)
Conference report
Open AccessThe new version of FALL3D has recently been released with several new features and improvements in model physics, solving algorithms, code accuracy and performance [1]. Among the new features are a data insertion scheme ... -
Multimodal deep learning methods for person annotation in video sequences
Folch, Arnau (Universitat Politècnica de Catalunya, 2018-10)
Bachelor thesis
Open AccessThe purpose of this project is to focus in exploring deep learning methods for multimodal person recognition in video sequences. The project will be carried out in the context of unsupervised person annotation systems for ... -
Optimization of atmospheric transport models on HPC platforms
De la Cruz Martinez, Raul; Folch, Arnau; Farré, Pau; Cabezas, Javier; Navarro, Nacho; Cela Espín, José M. (2016-12)
Article
Open AccessThe performance and scalability of atmospheric transport models on high performance computing environments is often far from optimal for multiple reasons including, for example, sequential input and output, synchronous ... -
Optimization of atmospheric transport models on HPC platforms
de la Cruz, Raúl; Folch, Arnau; Farré, Pau; Cabezas, Javier; Navarro, Nacho; Cela, José M. (Elsevier, 2016-12)
Article
Open AccessThe performance and scalability of atmospheric transport models on high performance computing environments is often far from optimal for multiple reasons including, for example, sequential input and output, synchronous ... -
Potential ash impact from Antarctic volcanoes: Insights from Deception Island’s most recent eruption
Geyer, A.; Marti, Alejandro; Giralt, S.; Folch, Arnau (Nature Publishing Group, 2017-11-28)
Article
Open AccessAsh emitted during explosive volcanic eruptions may disperse over vast areas of the globe posing a threat to human health and infrastructures and causing significant disruption to air traffic. In Antarctica, at least five ... -
Reconstructing the plinian and co-ignimbrite sources of large volcanic eruptions: A novel approach for the Campanian Ignimbrite
Marti, Alejandro; Folch, Arnau; Costa, Antonio; Engwell, Samantha (Nature Publishing Group, 2016-02-17)
Article
Open AccessThe 39 ka Campanian Ignimbrite (CI) super-eruption was the largest volcanic eruption of the past 200 ka in Europe. Tephra deposits indicate two distinct plume forming phases, Plinian and co-ignimbrite, characteristic of ... -
Representing Urban Geometries for Unstructured Mesh Generation
Gargallo-Peiró, Abel; Folch, Arnau; Roca, Xevi (Elsevier, 2016)
Article
Open AccessWe 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 ... -
Results of the eruptive column model inter-comparison study
Costa, Antonio; Suzuki, Yujiro J.; Cerminara, Matteo; Devenish, Ben J.; Ongaro, Tomaso E.; Herzog, Michael; van Eaton, Alexa R.; Denby, L. C.; Bursik, Marcus I.; Vitturi, M. de' Michieli; Engwell, Samantha L.; Neri, Augusto; Barsotti, Sara; Folch, Arnau; Macedonio, Giovanni V.; Girault, Frédéric; Carazzo, Guillaume; Tait, Steve R.; Kaminski, Édouard; Mastin, Larry G.; Woodhouse, Mark J.; Phillips, Jeremy C.; Hogg, Andrew J. C.; Degruyter, Wim; Bonadonna, Constanza (Elsevier, 2016-02-06)
Article
Open AccessTo improve our understanding of the physics of volcanic plumes and their interaction with the atmosphere, increasingly sophisticated numerical models of eruptive columns have been developed by a growing number of research ...