Documents published in Scipedia

• Scipedia: Your Digital Publishing Platform for Open Science

  J. García-Espinosa

  Collection of Articles on Social Sciences (2017).

  
  

  Abstract

  Some of the most relevant facts that are affecting the scientific publication and its impact are the transformations that have begun to happen in relation to what has been called Open Science. This represents a new approach to the scientific process, which is based on cooperative work and is inevitably linked to Open Access publishing. And although the latter term is linked to immediate and free access to research articles, it has evolved towards a much more complete concept involving the transformation of scientific practice to "share knowledge as soon as possible". The transformation towards Open Science has been assumed by the European Commission, which carrying out different measures in this regard. But, despite the obvious advantages of Open Access publishing, it will not be an easy task to make search results universally accessible without restriction. This objective faces the inertia of custom practices and a market dominated by a few large publishers. The idea of ​​developing a platform to answer many of the questions raised about the future of scientific publication is the outcome of many reflections and discussions on the presented scenario. Scipedia (see http://www.scipedia.com) is essentially a web platform that integrates a digital scientific publishing platform with the concept of social network. Scipedia aims to improve communication between researchers and professionals in science and technology, facilitating the exchange of knowledge and dissemination of their work. The ambition of this project is to be able to offer free publication services in Open Access to the entire scientific community. To this end, Scipedia integrates tools that allow the publication of journals and the management of their publication cycle, including support for blind and collaborative peer review.   But probably one of the most innovative aspects of this initiative is that it uses wikitext, a standard format for web pages, as a native format of publications. This definitely allows going beyond the paper support and its digital versions (such as the PDF format); the scientific communication can take full advantage of the publication on the Internet. This way, scientific journals and books, conference proceedings and any other document published in Scipedia can integrate text, multimedia information, data files, models, etc. in a natural way. In addition, Scipedia has an advanced online editor that allows for collaborative work and facilitates self-publishing. The capacity of self-publishing is not a trivial matter, since it virtually reduces production and publication costs to zero, and is basic to fulfilling the project's main ambition: to offer free publishing services for the author and open access without restrictions. The online editing tool is completed with utilities for importing files in LaTeX and Word formats, and exporting to PDF and ePub. Another relevant aspect of the initiative is that various strategies have been designed that allow articles to reach the maximum impact. For this, it is not enough to comply with certain standards and procedures that facilitate their indexation in the main search engines and aggregators. Here, the integration of the platform into a social network can play a fundamental role. Scipedia social network offers the standard tools of this type of platforms, creation of a user profile, creation of a network of contacts, presentation of the register of personal activities and of the contacts, creation and management of groups, etc. The basic information of the profile can be imported and synchronized with the data available in Google Scholar, which provides a first reference of the impact of the scientific activity of the user. This information is enriched with that generated by the personal activity in the network, which is dynamized using gamification techniques. This way, the actions of the user are rewarded and allow to evaluate the activity that generates in the network. In addition, records of visits and ratings of readers of an article are kept, which together with more traditional techniques such as citation counting, allows you to evaluate the impact of any document. In addition, each published document has a discussion page attached, and a history of all its revisions is maintained, even beyond the date of its publication.

  Abstract
  Some of the most relevant facts that are affecting the scientific publication and its impact are the transformations that have begun to happen in relation to what has been [...]

  • 86
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• Time domain simulation of coupled sloshing-seakeeping problems by coupling PFEM-2 and SeaFEM

  J. Colom Cobb, B. Servan Camas, P. Becker, J. García-Espinosa, S. Idelsohn

  Presentations to the VII International Conference on Computational Methods in Marine Engineering (Marine 2017).

  
  

  Abstract

  The aim of this work is to be able to cope with complex sloshing-seakeeping problems in an effective manner. For this purpose, two different solvers will be integrated into one coupled tool to take advantage of their characteristics. The Particle Finite Element Method is a versatile framework for the analysis of fluid-structure interaction problems. The latest development within the framework of the PFEM is the X-IVAS (eXplicit Integration along the Velocity and Acceleration Streamlines) scheme. It is a semi-implicit scheme built over a Semi-Lagrangian (SL) formulation. This new scheme was named PFEM-2 and will be used in this work to solve the fluid dynamics (sloshing) inside the tanks. The PFEM-2 will be coupled in the time domain with SeaFEM, a solver developed for seakeeping problems. SeaFEM solves the second-order diffraction-radiation equations by using the Finite Element Method (FEM) and will be used in this work to simulate the interaction between waves and a floating body. The coupling of the two tools will be accomplished by using an effective coupling algorithm and a communication technique that allows simulations to be computed without affecting the global compute time and the accuracy of the solvers. This new tool has been validated against experimental benchmarks carried out in a model basin at model scale.

  Abstract
  The aim of this work is to be able to cope with complex sloshing-seakeeping problems in an effective manner. For this purpose, two different solvers will be integrated into [...]

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• Hydrodynamic analysis of fishing farms.

  J. Gutiérrez Romero, J. García-Espinosa, B. Zamora-Parra, J. Pérez

  Presentations to the VII International Conference on Computational Methods in Marine Engineering (Marine 2017).

  
  

  Abstract

  There is no question about the relevancy of the blue growth concept, as a long term strategy to support sustainable growth in the marine sector. One of the sectors that has a higher potential for sustainable growth in this field is the aquaculture. This work is focused on the development of a time domain hydrodynamic solver for analysis and assessment of floating fishing farms. The paper also presents a demonstration case based on typical configuration of fishing farms used in the Mediterranean Sea. It is composed by a set of individual circular fishing cages. Several arrangements of fishing cages are also analysed subject to wind waves and currents. Different fishing cages are used in the performed simulations: circular, square and hexagonal. The influence of several configurations on fishing farm mooring behaviour in different sea states is studied. The analysis is focused in the dynamic behaviour of fishing cages. In particular mean drift and slow drift motions, including the second order-effects, will be studied, since they have important role on the behaviour of fishing farm in seaway. The results lead to final discussion about the best performance in fishing farm layout.

  Abstract
  There is no question about the relevancy of the blue growth concept, as a long term strategy to support sustainable growth in the marine sector. One of the sectors that has [...]

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• Hydrodynamic analysis of a Semisubmersible Floating Wind Turbine. Numerical validation of a second order coupled analysis

  B. Servan Camas, J. García-Espinosa, J. Gutiérrez Romero

  Presentations to the VII International Conference on Computational Methods in Marine Engineering (Marine 2017).

  
  

  Abstract

  A finite element method for the solution of the up-to-second-order wave diffraction-radiation problem in the time-domain is proposed. The solver has been validated against experimental data available for the HiPRWind semisubmersible platform (designed for floating wind turbines). To perform the validation, the wave diffraction-radiation solver is coupled to a body dynamics and mooring solvers in the time-domain. The HiPRWind movements and mooring forces have been compared for a large number of test cases, including decay tests, bichromatic, and irregular waves. Good agreement has been found for both, body movements and mooring forces.

  Abstract
  A finite element method for the solution of the up-to-second-order wave diffraction-radiation problem in the time-domain is proposed. The solver has been validated against [...]

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• Accelerated 3D multi-body seakeeping simulations using unstructured finite elements

  B. Servan Camas, J. García-Espinosa

  Journal of Computational Physics (2013). 252:382-403 (preprint)

  
  

  Abstract

  Being capable of predicting seakeeping capabilities in the time domain is of great interest for the marine and offshore industry. However, most computer programs used in the industry work in the frequency domain, with the subsequent limitation in the accuracy of their model predictions. The main objective of this work is the development of a time domain solver based on the finite element method capable of solving multi-body seakeeping problems on unstructured meshes. In order to achieve such an objective, several techniques are combined: the use of an efficient algorithm for the free surface boundary conditions, the use of deflated conjugate gradients, and the use of a graphic processing unit for speeding up the linear solver. The results obtained results by the developed model showed good agreement with analytical solutions, experimental data for an actual offshore structure model, as well as numerical solutions obtained by other numerical method. Also, a simulation with sixteen floating bodies was carried out in a affordable CPU time, showing the potential of this approach for multi-body simulation.

  Abstract
  Being capable of predicting seakeeping capabilities in the time domain is of great interest for the marine and offshore industry. However, most computer programs used in the [...]

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  • 5/5
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• Scipedia.com: Your Open Science Digital Publisher

  J. García-Espinosa, R. Ribó

  Collection of Articles on Social Sciences (2020).

  
  

  Abstract

  Some of the most relevant facts that are affecting the scientific publication and its impact are the transformations that have begun to happen in relation to what has been called Open Science. This represents a new approach to the scientific process, which is based on cooperative work and is inevitably linked to Open Access publishing. And although the latter term is linked to immediate and free access to research articles, it has evolved towards a much more complete concept involving the transformation of scientific practice to "share knowledge as soon as possible". The transformation towards Open Science has been assumed by the European Commission, which carrying out different measures in this regard. But, despite the obvious advantages of Open Access publishing, it will not be an easy task to make search results universally accessible without restriction. This objective faces the inertia of custom practices and a market dominated by a few large publishers. The idea of ​​developing a platform to answer many of the questions raised about the future of scientific publication is the outcome of many reflections and discussions on the presented scenario. Scipedia (see http://www.scipedia.com) is essentially a web platform that integrates a digital scientific publishing platform with the concept of social network. Scipedia aims to improve communication between researchers and professionals in science and technology, facilitating the exchange of knowledge and dissemination of their work. The ambition of this project is to be able to offer free publication services in Open Access to the entire scientific community. To this end, Scipedia integrates tools that allow the publication of journals and the management of their publication cycle, including support for blind and collaborative peer review.   But probably one of the most innovative aspects of this initiative is that it uses wikitext, a standard format for web pages, as a native format of publications. This definitely allows going beyond the paper support and its digital versions (such as the PDF format); the scientific communication can take full advantage of the publication on the Internet. This way, scientific journals and books, conference proceedings and any other document published in Scipedia can integrate text, multimedia information, data files, models, etc. in a natural way. In addition, Scipedia has an advanced online editor that allows for collaborative work and facilitates self-publishing. The capacity of self-publishing is not a trivial matter, since it virtually reduces production and publication costs to zero, and is basic to fulfilling the project's main ambition: to offer free publishing services for the author and open access without restrictions. The online editing tool is completed with utilities for importing files in LaTeX and Word formats, and exporting to PDF and ePub. Another relevant aspect of the initiative is that various strategies have been designed that allow articles to reach the maximum impact. For this, it is not enough to comply with certain standards and procedures that facilitate their indexation in the main search engines and aggregators. Here, the integration of the platform into a social network can play a fundamental role. Scipedia social network offers the standard tools of this type of platforms, creation of a user profile, creation of a network of contacts, presentation of the register of personal activities and of the contacts, creation and management of groups, etc. The basic information of the profile can be imported and synchronized with the data available in Google Scholar, which provides a first reference of the impact of the scientific activity of the user. This information is enriched with that generated by the personal activity in the network, which is dynamized using gamification techniques. This way, the actions of the user are rewarded and allow to evaluate the activity that generates in the network. In addition, records of visits and ratings of readers of an article are kept, which together with more traditional techniques such as citation counting, allows you to evaluate the impact of any document. In addition, each published document has a discussion page attached, and a history of all its revisions is maintained, even beyond the date of its publication.

  Abstract
  Some of the most relevant facts that are affecting the scientific publication and its impact are the transformations that have begun to happen in relation to what has been [...]

  • 170
  •  read

• Non-linear dynamic analysis of the response of moored floating structures

  J. Gutiérrez Romero, J. García-Espinosa, B. Servan Camas, B. Zamora-Parra

  Marine Structures (2016). Vol. 49 pp. 116-137 49, 116-137 (preprint)

  
  

  Abstract

  The complexity of the dynamic behaviour of offshore marine structures requires advanced simulations tools for the accurate assessment of the seakeeping behaviour of these devices. The aim of this work is to present a time-domain model for solving the dynamics of floating marine devices, subjected to non-linear environmental loads and paying special attention on the mooring dynamics. First, the formulation of the hydrodynamic approach for solving the wave-floater interaction is introduced. Second, the solver of the mooring dynamics, based on a non-linear Finite Element Method approach, is presented. Third, a procedure for coupling the hydrodynamic along with other external loads, with the floating structure and mooring dynamics is described. Fourth, some validation examples and comparisons among different mooring approaches are presented. Fifth, an analysis of the OC3 floating wind turbine concept is performed to study the influence of different mooring models, the effects of non-linear waves on the platform, and the tension in the mooring system. The dynamic mooring model along with the second-order wave model produce realistic simulations of the floating wind turbine performance.

  Abstract
  The complexity of the dynamic behaviour of offshore marine structures requires advanced simulations tools for the accurate assessment of the seakeeping behaviour of these [...]

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• Time domain simulation of coupled sloshing–seakeeping problems by SPH–FEM coupling

  B. Servan Camas, J. Cercós-Pita, J. Colom Cobb, J. García-Espinosa, A. Souto-Iglesias

  Ocean Engineering (2016). 123, 383-396 (preprint)

  
  

  Abstract

  The aim of this work is to carry out numerical simulations in the time domain of seakeeping problems taking into account internal flow in tanks, including sloshing. To this aim, a Smooth Particle Hydrodynamics (SPH) solver for simulating internal flows in tanks is coupled in the time domain to a Finite Element Method (FEM) diffraction-radiation solver developed for seakeeping problems. Validations are carried out comparing against available experimental data. Good agreement between obtained numerical results and experimental data is found.

  Abstract
  The aim of this work is to carry out numerical simulations in the time domain of seakeeping problems taking into account internal flow in tanks, including sloshing. To this [...]

  • 444
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• FIBRESHIP objectives and concept

  J. García-Espinosa, R. Salinas

  Open Access Repository of the FIBRESHIP project (2016).

  
  

  Abstract

  This document presents the objectives, concept and methodology of the projec "Engineering, production and life-cycle management for the complete construction of large-length FIBRE-based SHIPs" (FIBRESHIP).

  Abstract
  This document presents the objectives, concept and methodology of the projec "Engineering, production and life-cycle management for the complete construction of large-length [...]

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• A computational model for the evaluation of the spray generation of a Wave Adaptive Modular Vessel

  J. García-Espinosa, E. Oñate, B. Servan Camas, P. Nadukandi, P. Becker

  Collection of Papers on Computational Methods in Naval Architecture and Offshore Engineering (2020).

  
  

  Abstract

  This paper presents part of the work done within the project 'Advanced Numerical Simulation and Performance Evaluation of WAM-V® in Spray Generating Conditions' developed by the International Center for Numerical Methods in Engineering (CIMNE) under Navy Grant N62909-12-1-7101 issued by the Office of Naval Research Global. One of the primary goals of that project was the development of a computational model for simulation of the Wave Adaptive Modular Vessel (WAM-V®) under spray generating conditions. For this purpose, a Semi-Lagrangian Particle Finite Element Method (SL-PFEM) has been applied. This is the latest development within the framework of the so-called Particle Finite Element Method (PFEM), using the X-IVAS (eXplicit Integration along the Velocity and Acceleration Streamlines) scheme. In this paper we demonstrate the applicability of the SL-PFEM using the X-IVAS scheme for the simulation of the Wave Adaptive Modular Vehicle under spray generating conditions.

  Abstract
  This paper presents part of the work done within the project 'Advanced Numerical Simulation and Performance Evaluation of WAM-V® in Spray Generating Conditions' [...]

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Articles (Documents not available in Scipedia)

• Estudio dinámico de líneas de fondeo en plataformas flotantes de aerogeneradores marinos

  J. García-Espinosa

  Ingeniería naval, 66-72, 2014

• Avances en el desarrollo de un modelo de elementos finitos para evaluación de un buque de efecto superficie

  J. García-Espinosa, B. Serván, D. Di Capua, P.A. Ubach, E. Oñate

  Ingeniería naval, 922: 68-73

• Estudio del Comportamiento Dinámico Acoplado en Estructuras Offshore

  JEG Romero, BZ Parra, JG Espinosa, JAE Pérez

  Anuario de Jóvenes Investigadores, 39-41, 2014

• Prediction of total resistance coefficients using neural networks

  I Ortigosa, R López, J García

  Journal of Maritime Research 6 (3), 15-26

• Dynamic modelling of mooring for floating offshore structures

  JE Gutiérrez Romero, B Zamora Parra, J García Espinosa, J Esteve

  Computational Methods in Marine Engineering V-Proceedings of the 5th ..., 2013

• Desarrollo de un conjunto de herramientas para el análisis acoplado de aerogeneradores en alta mar

  JE Gutiérrez Romero, B Zamora, J García Espinosa, J Esteve Pérez

  Ingeniería naval, 62-75, 2013

• Stabilized finite element methods for convection-diffusion-reaction, Helmholtz and Stokes problems

  P Nadukandi

  Universitat Politècnica de Catalunya, 2011

• A family of residual‐based stabilized finite element methods for Stokes flows

  E Oñate, P Nadukandi, SR Idelsohn, J García, C Felippa

  International Journal for Numerical Methods in Fluids 65 (1‐3), 106-134, 2011

• Experiencias en el desarrollo y aplicación de herramientas de cálculo y verificación de estructuras marinas para generación de energía

  J García Espinosa, B Serván Camas, D Sá

  49º Congreso de Ingeniería Naval e Industria Marítima, 1-16, 2010

• Análisis estructural del efecto de explosiones a bordo de buques de pasaje

  J García-Espinosa, D Di Capua, D Sá, S Honrubia, F Viejo, E Oñate, R Marí, ...

  Ingeniería naval, 105-114, 2007

• ODD Level Set: A new method for simulation of free surface problems

  JG Espinosa, AV Tomás

  Journal of maritime research 3 (1), 27-40, 2006

• Análisis CFD del movimiento de balance de un portacontenedores

  J García-Espinosa, E Oñate, JB Helmers, MR Chakkor

  Ingeniería Naval, abril, 2004

• Ship hydrodynamics

  E Onate, J García, SR Idelsohn

  Encyclopedia of computational mechanics, 2004

• A methodology for analysis of fluid-structure interaction accounting for free surface waves

  E Oñate, J García, S Idelsohn

  European Conference on Computational Mechanics (ECCM99), 1999

• A stabilized numerical method for analysis of ship hydrodynamics

  J García, E Oñate, H Sierra, C Sacco, S Idelsohn

  Computational fluid dynamics'98, 664-669, 1998

• An alpha-adaptive approach for stabilized finite element solution of advective-diffusive problems with sharp gradients

  E Onate, J García-Espinosa, S Idelsohn

  Computational fluid dynamics'98, 748-753, 1998

• On the stabilization of numerical solution for advective-diffusive transport and fluid flow problems

  E Oñate, J García, S Idelsohn

  Centro Internacional de Métodos Numéricos en Ingeniería, 1996

Books, book chapters and edited books (Documents not available in Scipedia)

• MARINE 2011, IV International Conferencn Marine Engineering: Selected Papers

  L. Eca, E. Oñate, J. García-Espinosa, T. Kvamsdal, P. Bergan

  Springer

• Fluid-Structure interaction applied to blood flow simulations

  E. Soudah, E. Oñate, J. García-Espinosa, J. S. Pérez, A. Mena, E. Heindenreich, J. F. Rodríguez, M. A. Martínez, M. Doblaré

  Advances in Computational Vision and Medical Image Processing, Springer

• Computational Methods in Marine Engineering III (MARINE 2009)

  P. Bergan, B. Pettersen, T. Kvamsdal, E. Oñate, J. García-Espinosa

  CIMNE

• Computational Methods in Marine Engineering II (MARINE 2007)

  P. Bergan, J. García-Espinosa, P. Kvamsdal, T. Kvamsdal, E. Oñate

  CIMNE

• LES turbulence models. Relation with stabilized numerical methods

  A. Valls, J. Garcia-Espinosa, E. Oñate

  Models, Experiments and Computation in Turbulence, CIMNE

• Computational Methods in Marine Engineering (MARINE 2005)

  P. Bergan, J. García-Espinosa, E. Oñate, T. Kvamsdal

  CIMNE

• A general stabilized formulation for incompressible fluid flow using finite calculus and the finite element method

  E. Onate, J. Garcia-Espinosa, G. Bugeda, S.R. Idelsohn

  Fluid dynamics and aeronautics new challenges: a book dedicated to Pierre Perrier. J. Periaux, D. Chamption, O. Pironneau, P.H. Thomas, eds.

Conference papers and presentations (Documents not available in Scipedia)

• A finite element method for fluid-structure interaction with surface waves

  J. Garcia-Espinosa and E. Oñate

  Proceedings of the European Conference on Computational Mechanics (ECCM 2001)

• Finite element analysis of incompressible flows with free surface waves using a finite calculus formulation

  E. Oñate, J. García-Espinosa

  Proceedings of the VI European Congress in Computational Methods in Applied Sciences and Engineering (ECCOMAS 2001)

Technical reports, thesis and other (Documents not available in Scipedia)

• Desarrollo de herramientas de autoaprendizaje multimedia para cálculo de estructuras por ordenador en ingeniería

  J. García-Espinosa, J. Martínez, D. Yebra, M. Cervera Ruiz, E. Oñate, S. Oller, B. Suárez

  Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013