Browsing by Author "Vázquez, Mariano"
Now showing items 21-40 of 63
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Coupled electromechanical model of the heart: Parallel finite element formulation
(2012-01)
Article
Restricted access - publisher's policyIn this paper, a highly parallel coupled electromechanical model of the heart is presented and assessed. The parallel-coupled model is thoroughly discussed, with scalability proven up to hundreds of cores. This work focuses ... -
Design and execution of a verification, validation, and uncertainty quantification plan for a numerical model of left ventricular flow after LVAD implantation
(Public Library of Science, 2022-06)
Article
Open AccessBACKGROUND: Left ventricular assist devices (LVADs) are implantable pumps that act as a life support therapy for patients with severe heart failure. Despite improving the survival rate, LVAD therapy can carry major ... -
Effects of detailed ventricular anatomy on the blood flow
(Barcelona Supercomputing Center, 2015-05-05)
Conference report
Open AccessThe presented study is a preliminary test and analysis of the role of trabeculae and papillary muscles in the hemodynamics of the left ventricle (LV). -
Evaluating the roles of detailed endocardial structures on right ventricular haemodynamics by means of CFD simulations
(Wiley, 2018-09)
Open AccessComputational modelling plays an important role in right ventricular (RV) haemodynamic analysis. However, current approaches use smoothed ventricular anatomies. The aim of this study is to characterise RV haemodynamics ... -
Extension of the parallel Sparse Matrix Vector Product (SpMV) for the implicit coupling of PDEs on non-matching meshes
(Elsevier, 2018-09-15)
Article
Open AccessThe Sparse Matrix Vector Product (SpMV) is one of the main operations of iterative solvers, and, in a parallel context, it is also the siege of point-to-point communications between the neighboring MPI processes. The ... -
Fluid-structure interaction based on HPC multicode coupling
(2018)
Article
Restricted access - publisher's policyThe fluid-structure interaction (FSI) problem has received great attention in the last few years, mainly because it is present in many physical systems, industrial applications, and almost every biological system. In the ... -
Fluid–structure interaction analysis of eccentricity and leaflet rigidity on thrombosis biomarkers in bioprosthetic aortic valve replacements
(John Wiley & sons, 2022-12)
Article
Open AccessThis work intends to study the effect of aortic annulus eccentricity and leaflet rigidity on the performance, thrombogenic risk and calcification risk in bioprosthetic aortic valve replacements (BAVRs). To address these ... -
Fluid–structure interaction simulations outperform computational fluid dynamics in the description of thoracic aorta haemodynamics and in the differentiation of progressive dilation in Marfan syndrome patients
(The Royal Society, 2020-02)
Article
Open AccessAbnormal fluid dynamics at the ascending aorta may be at the origin of aortic aneurysms. This study was aimed at comparing the performance of computational fluid dynamics (CFD) and fluid–structure interaction (FSI) simulations ... -
From imaging to simulation: a framework applied to simulate the blood flow in the carotids
(Barcelona Supercomputing Center, 2015-05-05)
Conference report
Open AccessIn this work we present a methodology to extract information from medical imaging and use it for hemodynamical simulation in arteries. Based on in-vivo magnetic resonance images (MRI), the velocity of the blood flow has ... -
Fully-Coupled Electromechanical Simulations of the LV Dog Anatomy Using HPC: Model Testing and Verification
(Springer, 2015-01-01)
Part of book or chapter of book
Open AccessVerification of electro-mechanic models of the heart require a good amount of reliable, high resolution, thorough in-vivo measurements. The detail of the mathematical models used to create simulations of the heart beat ... -
Generation of a simulation scenario from medical data: Carto and MRI
(Barcelona Supercomputing Center, 2015-05-05)
Conference report
Open AccessMultiphysic cardiac models give accurate simulations of normal and pathologic behavior of the heart. It can help to develop new treatments and medical devices. The complexity relies on both mathematical and geometrical ... -
Heat loss prediction of a confined premixed jet flame using a conjugate heat transfer approach
(Elsevier, 2017-04)
Article
Open AccessThe presented work addresses the investigation of the heat loss of a confined turbulent jet flame in a lab-scale combustor using a conjugate-heat transfer approach and large-eddy simulation. The analysis includes the ... -
Heat Transfer Effects on a Fully Premixed Methane Impinging Flame
(Springer, 2016-01-09)
Article
Open AccessA numerical assessment of different thermal conditions for an impinging flame configuration is investigated using large-eddy simulation. The cases of study correspond to a turbulent methane flame at equivalence ratio ER = ... -
Heterogeneous CPU/GPU co-execution of CFD simulations on the POWER9 architecture: Application to airplane aerodynamics
(Elsevier, 2020-06)
Article
Open AccessHigh fidelity Computational Fluid Dynamics simulations are generally associated with large computing requirements, which are progressively acute with each new generation of supercomputers. However, significant research ... -
High-Performance Computing: Do’s and Dont’s
(InTech, 2018-02-14)
Part of book or chapter of book
Open AccessComputational fluid dynamics (CFD) is the main field of computational mechanics that has historically benefited from advances in high-performance computing. High-performance computing involves several techniques to make a ... -
HPC compact quasi-Newton algorithm for interface problems
(Elsevier, 2020)
Article
Open AccessIn this work we present a robust interface coupling algorithm called Compact Interface quasi-Newton (CIQN). It is designed for computationally intensive applications using an MPI multi-code partitioned scheme. The algorithm ... -
Human biventricular electromechanical simulations on the progression of electrocardiographic and mechanical abnormalities in post-myocardial infarction
(Oxford University Press, 2021-03)
Article
Open AccessAims Develop, calibrate and evaluate with clinical data a human electromechanical modelling and simulation framework for multiscale, mechanistic investigations in healthy and post-myocardial infarction (MI) conditions, ... -
Large-scale CFD simulations of the transitional and turbulent regime for the large human airways during rapid inhalation
(Elsevier, 2016-02-01)
Article
Open AccessThe dynamics of unsteady flow in the human large airways during a rapid inhalation were investigated using highly detailed large-scale computational fluid dynamics on a subject-specific geometry. The simulations were ... -
Left Ventricular Trabeculations Decrease the Wall Shear Stress and Increase the Intra-Ventricular Pressure Drop in CFD Simulations
(Frontiers Media, 2018-04-30)
Article
Open AccessThe aim of the present study is to characterize the hemodynamics of left ventricular (LV) geometries to examine the impact of trabeculae and papillary muscles (PMs) on blood flow using high performance computing (HPC). ... -
Local preconditioning and variational multiscale stabilization for Euler compressible steady flow
(Elsevier, 2016)
Article
Open AccessThis paper introduces a preconditioned variational multiscale stabilization (P-VMS) method for compressible flows. In this introductory paper we focus on inviscid flow and steady state problems. The Euler equations are ...
