A5037726937- Pulsars and Gravitational Waves Research
- Computational Fluid Dynamics and Aerodynamics
- Cosmology and Gravitation Theories
- Black Holes and Theoretical Physics
- Distributed and Parallel Computing Systems
- Micro and Nano Robotics
- Characterization and Applications of Magnetic Nanoparticles
- Fluid Dynamics and Turbulent Flows
- Astrophysical Phenomena and Observations
- Advanced Numerical Methods in Computational Mathematics
- Numerical methods for differential equations
- Coronary Interventions and Diagnostics
- Lattice Boltzmann Simulation Studies
- Scientific Computing and Data Management
- Numerical methods in engineering
- Cerebrovascular and Carotid Artery Diseases
- Geophysics and Gravity Measurements
- Advanced Numerical Analysis Techniques
- Cloud Computing and Resource Management
- Blood properties and coagulation
- Gas Dynamics and Kinetic Theory
- Physics of Superconductivity and Magnetism
- Electromagnetic Simulation and Numerical Methods
- Enhanced Oil Recovery Techniques
- Mathematics and Applications
Universitat de les Illes Balears
2007-2025
Institute of Applied Computing & Community Code
2019-2024
IAC (United States)
2008-2021
University of International Business
2019-2021
Institut d'Estudis Espacials de Catalunya
2018-2020
University of Amsterdam
2012-2015
Universidade da Coruña
2014-2015
Vrije Universiteit Amsterdam
2012
We present a new formulation of the Einstein equations based on conformal and traceless decomposition covariant form Z4 system. This combines advantages decomposition, such as one used in BSSNOK (i.e. well-tested hyperbolic gauges, no need for excision, robustness to imperfect boundary conditions) with constraint-damped formulation, generalized harmonic exponential decay constraint violations when these are produced). validate set through standard tests by evolving binary black hole systems....
Treatment of stenosed coronary arteries by balloon angioplasty and stenting results in arterial injury including severe damage to the endothelium at site treatment initiates a complex cascade inflammatory processes that may lead development in-stent restenosis (ISR). Many clinical biological factors involved progression restenotic lesions have been studied detail over past few years but mystery behind pathophysiological mechanisms this disease is still unresolved. In present work, effects...
Excessive migration and proliferation of smooth muscle cells (SMCs) has been observed as a major factor contributing to the development in-stent restenosis after coronary stenting. Building upon results from in vivo experiments, we formulated hypothesis that speed initial tissue re-growth response is determined by early SMCs injured intima. To test this hypothesis, cellular Potts model stented artery developed where stent struts were deployed at different depths into tissue. An extreme...
The tremendous challenge of comparing our theoretical models with the gravitational-wave observations in new era multimessenger astronomy requires accurate and fast numerical simulations complicated physical systems described by Einstein matter equations. These requirements can only be satisfied if parallelized efficiently on a large number processors advanced computational strategies are adopted. To achieve this goal we have developed Simflowny, an open platform for scientific dynamical...
We present a hybrid variational-collocation, immersed, and fully-implicit formulation for fluid-structure interaction (FSI) using unstructured T-splines. In our immersed methodology, we define an Eulerian mesh on the whole computational domain Lagrangian solid domain, which moves arbitrarily top of mesh. Mathematically, problem reduces to solving three equations, namely, linear momentum balance, mass conservation, condition kinematic compatibility between displacement velocity. use weighted...
Multiscale simulations model phenomena across natural scales using monolithic or component-based code, running on local distributed resources. In this work, we investigate the performance of multiscale computing models, guided by six applications with different characteristics and from several disciplines. Three modes are identified: supplementing dependencies large-scale resources, load distribution over multiple balancing small- We find that first mode has apparent benefit increasing...
Re-establishing a functional endothelium following endovascular treatment is an important factor in arresting neointimal proliferation. In this study, both histology (in vivo) and computational simulations silico) are used to evaluate growth patterns within coronary arteries along the axial direction of stent. Comparison configurations vivo silico was undertaken identify candidate mechanisms for endothelial repair. Stent, lumen areas were measured from histological sections obtained eight...
We extend the recently introduced divergence-conforming immersed boundary (DCIB) method [1] to fluid-structure interaction (FSI) problems involving closed co-dimension one solids. focus on capsules and vesicles, whose discretization is particularly challenging due higher-order derivatives that appear in their formulations. In two-dimensional settings, we employ cubic B-splines with periodic knot vectors obtain discretizations of curves C^2 inter-element continuity. three-dimensional use...
Multiscale simulations are essential in the biomedical domain to accurately model human physiology. We present a modular approach for designing, constructing and executing multiscale on wide range of resources, from laptops petascale supercomputers, including combinations these. Our work features two applications, in-stent restenosis cerebrovascular bloodflow, which combine multiple existing single-scale applications create simulation. These can be efficiently coupled, deployed executed...
Nature is observed at all scales; with multiscale modeling, scientists bring together several scales for a holistic analysis of phenomenon. The models on these different may require significant but also heterogeneous computational resources, creating the need distributed computing. A particularly demanding type models, tightly coupled, brings it number theoretical and practical issues. In this contribution, coupled model in-stent restenosis first theoretically examined its merits using...
The gauge polyvalence of a new numerical code is tested, both in harmonic-coordinate simulations (gauge-waves test bed) and singularity-avoiding coordinates (simple black-hole simulations, either with or without shift). built upon an adjusted first-order flux-conservative version the Z4 formalism recently proposed family robust finite-difference high-resolution algorithms. An outstanding result long-term evolution (up to $1000M$) black hole normal (zero shift) excision.
A Lagrangian density is provided, that allows to recover the Z4 evolution system from an action principle. The resulting then strongly hyperbolic when supplemented by gauge conditions like '1+log' or 'freezing shift', suitable for numerical evolution. physical constraint $Z_\mu = 0$ can be imposed just on initial data. corresponding canonical equations are also provided. This opens door analogous results other numerical-relativity formalisms, BSSN, derived a symmetry-breaking procedure....