Browsing Computational Mathematics (CM) by Title
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Goaloriented adaptivity using unconventional error representations for the multidimensional Helmholtz equation
(International Journal for Numerical Methods in Engineering, 20170627)In goal‐oriented adaptivity, the error in the quantity of interest is represented using the error functions of the direct and adjoint problems. This error representation is subsequently bounded above by element‐wise error ... 
GoalOriented pAdaptivity using Unconventional Error Representations for a 1D Steady State ConvectionDiffusion Problem
(Procedia Computer Science, 2017)This work proposes the use of an alternative error representation for GoalOriented Adaptivity (GOA) in context of steady state convection dominated diffusion problems. It introduces an arbitrary operator for the computation ... 
Grouplevel progressive alterations in brain connectivity patterns revealed by diffusiontensor brain networks across severity stages in Alzheimer's disease
(Frontiers in Aging Neuroscience, 20170701)Alzheimer’s disease (AD) is a chronically progressive neurodegenerative disease highly correlated to aging. Whether AD originates by targeting a localized brain area and propagates to the rest of the brain across ... 
High order discontinuous finitevolume/finiteelement method for CFD applications
(11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014, 20141231)The proposed method naturally merges the desirable conservative properties and intuitive physical formulation of the widely used finitevolume (FV) technique, with the capability of local arbitrary highorder accuracy and ... 
Highaccuracy adaptive modeling of the energy distribution of a meniscusshaped cell culture in a Petri dish
(Journal of Computational Science, 20151231)Cylindrical Petri dishes embedded in a rectangular waveguide and exposed to a polarized electromagnetic wave are often used to grow cell cultures. To guarantee the success of these cultures, it is necessary to enforce that ... 
Highfrequency analysis of the efficiency of a local approximate DtN2 boundary condition for prolate spheroidalshaped boundaries
(Wave Motion, 20101231)The performance of the secondorder local approximate DtN boundary condition suggested in [4] is investigated analytically when employed for solving highfrequency exterior Helmholtz problems with elongated scatterers. ... 
Highorder mixed weighted compact and noncompact scheme for shock and small length scale interaction
(International Journal of Computer Mathematics, 20131231)It is critical for a numerical scheme to obtain numerical results as accurate as possible with limited computational resources. Turbulent processes are very sensitive to numerical dissipation, which may dissipate the small ... 
Highlyaccurate 5axis flank CNC machining with conical tools
(The International Journal of Advanced Manufacturing Technology, 201804)A new method for $5$axis flank computer numerically controlled (CNC) machining using a predefined set of tappered ballendmill tools (aka conical) cutters is proposed. The space of lines that admit tangential motion of ... 
$hp$Adaptive Simulation and Inversion of Magnetotelluric Measurements
(20151218)The magnetotelluric (MT) method is a passive exploration technique that aims at esti mating the resistivity distribution of the Earth’s subsurface, and therefore at providing an image of it. This process is divided into ... 
Hypersingular integral equations over a disc: Convergence of a spectral method and connection with Tranter's method
(Journal of Computational and Applied Mathematics, 20141231)Twodimensional hypersingular equations over a disc are considered. A spectral method is developed, using Fourier series in the azimuthal direction and orthogonal polynomials in the radial direction. The method is proved ... 
ICCS 2017 Workshop on AgentBased Simulations, Adaptive Algorithms and Solvers
(Procedia Computer Science, 2017)This workshop seeks to integrate results from different domains of computer science, computational science, and mathematics. We welcome simulation papers, either hard simulations using finite element or finite difference ... 
Identification of defects originated during the filling of cast pieces through particles modelling
(11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014, 20141231)In casting processes, strong recirculation zones may trap air, gases and strip particles of sand off the mold affecting seriously the quality of the cast pieces. Especially during the filling of molten pieces with large ... 
International energy agency ocean energy systems task 10 wave energy converter modeling verification and validation
(Proceedings of European Wave and Tidal Energy Conference, 2017)This is the first joint reference paper for the Ocean Energy Systems (OES) Task 10 Wave Energy Converter modeling verification and validation group. The group is established under the OES Energy Technology Network program ... 
Intersecting invariant manifolds in spatial restricted threebody problems: Design and optimization of Earthtohalo transfers in the SunEarthMoon scenario
(Communications in Nonlinear Science and Numerical Simulation, 20121231)This work deals with the design of transfers connecting LEOs with halo orbits around libration points of the EarthMoon CRTBP using impulsive maneuvers. Exploiting the coupled circular restricted threebody problem ... 
Introduction to the special issue on high performance computing solutions for complex problems
(Scalable Computing, 20160101)[No abstract available] 
Lagged and instantaneous dynamical influences related to brain structural connectivity
(Frontiers in Psychology, 20151231)Contemporary neuroimaging methods can shed light on the basis of human neural and cognitive specializations, with important implications for neuroscience and medicine. Indeed, different MRI acquisitions provide different ... 
Layout Optimisation of Wave Energy Converter Arrays
(Energies, 20170824)This paper proposes an optimisation strategy for the layout design of wave energy converter (WEC) arrays. Optimal layouts are sought so as to maximise the absorbed power given a minimum qfactor, the minimum distance between ... 
LBMHPC  An opensource tool for fluid simulations. Case study: Unified parallel C (UPCPGAS)
(Proceedings  IEEE International Conference on Cluster Computing, ICCC, 20151231)The main motivation of this work is the evaluation of the Unified Parallel C (UPC) model, for Boltzmannfluid simulations. UPC is one of the current models in the socalled Partitioned Global Address Space paradigm. This ... 
Leveraging the Performance of LBMHPC for Large Sizes on GPUs using Ghost Cells
(ICA3PP: 15th International Conference on Algorithms and Architectures for Parallel Processing, 20161110)Today, we are living a growing demand of larger and more efficient computational resources from the scienti c community. On the other hand, the appearance of GPUs for general purpose computing supposed an important advance ... 
Leveraging the performance of LBMHPC for large sizes on GPUs using ghost cells
(Algorithms and Architectures for Parallel Processing, 20161125)Today, we are living a growing demand of larger and more efficient computational resources from the scientific community. On the other hand, the appearance of GPUs for general purpose computing supposed an important advance ...