Browsing Computational Mathematics (CM) by Title
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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 ... 
Local nonobtuse tetrahedral refinements around an edge
(Applied Mathematics and Computation, 20131231)In this note we show how to generate and conformly refine nonobtuse tetrahedral meshes locally around and towards an edge so that all dihedral angles of all resulting tetrahedra remain nonobtuse. The proposed technique can ... 
Low cost a posteriori error estimators for an augmented mixed FEM in linear elasticity. Dedicated to Professor Rodolfo Rodríguez on the occasion of his 60th birthday.
(Applied Numerical Mathematics, 20141231)We consider an augmented mixed finite element method applied to the linear elasticity problem and derive a posteriori error estimators that are simpler and easier to implement than the ones available in the literature. In ... 
Magnetotelluric characterization of the alhama de murcia fault (Eastern Betics)  Preliminary results
(22nd European Meeting of Environmental and Engineering Geophysics, Near Surface Geoscience 2016, 20161231)The Lorca Earthquake (11/5/2011, Mw 5.2) stands as the most destructive in Spain over the last 50 years. It was interpreted as having occurred in an intersegment zone of the strikeslip Alhama de Murcia Fault (AMF). Within ... 
Manytask computing on manycore architectures
(Scalable Computing, 20160101)ManyTask Computing (MTC) is a common scenario for multiple parallel systems, such as cluster, grids, cloud and supercomputers, but it is not so popular in shared memory parallel processors. In this sense and given the ... 
Modeling of bone conduction of sound in the human head using hpfinite elements: Code design and verification
(Computer Methods in Applied Mechanics and Engineering, 20111231)We focus on the development of a reliable numerical model for investigating the boneconduction of sound in the human head. The main challenge of the problem is the lack of fundamental knowledge regarding the transmission ... 
A multidomain decompositionbased Fourier finite element method for the simulation of 3D marine CSEM measurements
(Computational Geosciences, 20170101)We introduce a multidomain decomposition Fourier finite element (MDDFFE) method for the simulation of threedimensional (3D) marine controlled source electromagnetic measurement (CSEM). The method combines a 2D finite ... 
Multidomain grid refinement for latticeBoltzmann simulations on heterogeneous platforms
(Proceedings  IEEE 18th International Conference on Computational Science and Engineering, CSE 2015, 20160101)The main contribution of the present work consists of several parallel approaches for grid refinement based on a multidomain decomposition for latticeBoltzmann simulations. The proposed method for discretizing the fluid ... 
Multiobjective hierarchic memetic solver for inverse parametric problems
(Procedia Computer Science, 20151231)We propose a multiobjective approach for solving challenging inverse parametric problems. The objectives are misfits for several physical descriptions of a phenomenon under consideration, whereas their domain is a common ... 
A multiobjective memetic inverse solver reinforced by local optimization methods
(Journal of Computational Science, 20160901)We propose a new memetic strategy that can solve the multiphysics, complex inverse problems, formulated as the multiobjective optimization ones, in which objectives are misfits between the measured and simulated states ... 
Multipreconditioned GMRES for Shifted Systems
(SIAM Journal on Scientific Computing, 20170101)An implementation of GMRES with multiple preconditioners (MPGMRES) is proposed for solving shifted linear systems with shiftandinvert preconditioners. With this type of preconditioner, the Krylov subspace can be built ... 
Necking in 2D incompressible polyconvex materials: theoretical framework and numerical simulations
(Quarterly Journal of Mechanics and Applied Mathematics, 20170615)We show examples of 2D incompressible isotropic homogeneous hyperelastic materials with a polyconvex storedenergy function that present necking. The construction of the storedenergy function of amaterial satisfying all ... 
New Simplified Algorithm for the Multiple Rotating Frame Approach in Computational Fluid Dynamics
(Journal of Fluids Engineering, 20170602)This paper deals with rotating effects simulation of steady flows in turbomachinery. To take into account the rotating nature of the flow, the frozen rotor approach is one of the widely used approaches. This technique, ... 
New Theory of Flight
(Journal of Mathematical Fluid Mechanics, 20160101)We present a new mathematical theory explaining the fluid mechanics of subsonic flight, which is fundamentally different from the existing boundary layercirculation theory by Prandtl–Kutta–Zhukovsky formed 100 year ago. ... 
Nonconforming curved finite element schemes for timedependent elasticacoustic coupled problems
(Journal of Computational Physics, 20160101)Highorder numerical methods for solving timedependent acousticelastic coupled problems are introduced. These methods, based on Finite Element techniques, allow for a flexible coupling between the fluid and the solid ... 
Nonlinear computations of heave motions for a generic Wave Energy Converter
(In Vittorio Bucci Alberto Marinò (Eds.), Technology and Science for the Ships of the Future, Proceedings of NAV 2018: 19th International Conference on Ship and Maritime Research, IOS Press BV, 2018)A benchmarking activity of numerical methods for analysis of Wave Energy Converters (WEC) was proposed under the Ocean Energy Systems (OES) International Energy Agency (IEA) Task 10 in 2015. The purpose of the benchmark ...