Browsing by Author "Jansson, J."
Now showing items 1-20 of 34
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Adaptive simulation of unsteady flow past the submerged part of a floating wind turbine platform
Jansson, J.; Nava, V.
; Sanchez, M.; Aguirre, G.; de Abreu, R.V.; Hoffman, J.; Villate, J.L. (2015-12-31)
Offshore floating platforms for wind turbines represent challenging concepts for designers trying to combine an optimal compromise between cost effectiveness and performance. Modelling of the hydrodynamic behaviour of the ... -
Computability and Adaptivity in CFD
Hoffman, J.; Jansson, J.; Jansson, N.; Vilela De Abreu, R.; Johnson, C. (2019)
We give a brief introduction to research on adaptive computational methods for laminar compressible and incompressible flow, and then focus on computability and adaptivity for turbulent incompressible flow, where we present ... -
Computation of slat noise sources using adaptive FEM and lighthill's analogy
Hoffman, J.; Jansson, J.; de Abreu, R.V. (2013-12-31)
This is a summary of preliminary results from simulations with the 30P30N high-lift device. We used the General Galerkin finite element method (G2), where no explicit subgrid model is used, and where the computational mesh ... -
A computational model of open-irrigated radiofrequency catheter ablation accounting for mechanical properties of the cardiac tissue
(2018)Radiofrequency catheter ablation (RFCA) is an effective treatment for cardiac arrhythmias. Although generally safe, it is not completely exempt from the risk of complications. The great flexibility of computational models ... -
Control of distributed parameter systems modelled by parabolic variational inequalities of the obstacle type
(2019)We will investigate the numerical solution of the control problem modelled by parabolic variational inequalities. The general point of view adopted in this work has its roots in the work by R. Glowinski. The optimal control ... -
Direct FEM computation of turbulent multiphase flow in 3D priting nozzle design
(2020)In this paper, we present a nozzle design of the 3D printing using FEniCS-HPC as mathematical and simulation tool. In recent years 3D printing or Additive Manufacturing (AM) has become a emerging technology and it has ... -
Direct FEM large scale computation of turbulent multiphase flow in urban water systems and marine energy
Krishnasamy, E.; Hoffman, J.; Jansson, J. (2016-11-30)
High-Reynolds number turbulent incompressible multiphase flow represents a large class of engineering problems of key relevance to society. Here we describe our work on modeling two such problems: 1. The Consorcio de Aguas ... -
Direct finite element simulation of turbulent flow for marine based renewable energy
Jansson, J.; Nguyen, V.D.; Moragues, M.; Castanon, D.; Saavedra, L.; Krishnasamy, E.; Goude, A.; Hoffman, J. (2017)
In this article we present a computational framework for simulation of turbulent flow in marine based renewable energy applications. In particular, we focus on floating structures and rotating turbines. This work is an ... -
Effect of Tissue Elasticity in Cardiac Radiofrequency Catheter Ablation Models
(2018)Radiofrequency catheter ablation (RFCA) is an effective treatment for different types of cardiac arrhythmias. However, major complications can occur, including thrombus formation and steam pops. We present a full 3D ... -
A FEniCS-HPC framework for multi-compartment Bloch-Torrey models
Nguyen, D.; Jansson, J.; Hoffman, J. (2016-11-30)
In diffusion nuclear magnetic resonance (NMR) and diffusion magnetic resonance imaging (MRI), the multi-compartment Bloch-Torrey equation plays an important role in probing the diffusion characteristics from a nanometer ... -
FEniCS-HPC: Automated predictive high-performance finite element computing with applications in aerodynamics
Hoffman, J.; Jansson, J.; Jansson, N. (2016-01-01)
Developing multiphysics finite element methods (FEM) and scalable HPC implementations can be very challenging in terms of software complexity and performance, even more so with the addition of goal-oriented adaptive mesh ... -
Finite Element Simulations of Two-phase Flow and Floating Bodies Using FEniCS-HPC
Moragues, M.; Castanon, D.; Degirmenci, N.C.; Jansson, J.; Nava, V.; Krishnasamy, E.; Hoffman, J. (2018-07)
We present a variational multiscale stabilized finite element method to solve the variable density incompressible Navier-Stokes equations for the simulation of two-phase flow. We introduce a level-set method based on the ... -
Framework for adaptive fluid-structure interaction with industrial applications
Jansson, J.; Degirmenci, N.C.; Hoffman, J. (2013-12-31)
We present developments in the Unicorn-HPC framework for unified continuum mechanics, enabling adaptive finite element computation of fluid-structure interaction, and an overview of the larger FEniCS-HPC framework for ... -
How does radiofrequency ablation efficacy depend on the stiffness of the cardiac tissue? Insights from a computational model
(2019)Objective. Radiofrequency catheter ablation (RFCA) is an effective treatment for the elimination of cardiac arrhythmias, however it is not exempt from complications that can risk the patients’ life. The efficacy of the ... -
International energy agency ocean energy systems task 10 wave energy converter modeling verification and validation
(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 ... -
Introduction to the special issue on high performance computing solutions for complex problems
(2016-01-01)[No abstract available] -
LBM-HPC - An open-source tool for fluid simulations. Case study: Unified parallel C (UPC-PGAS)
(2015-12-31)The main motivation of this work is the evaluation of the Unified Parallel C (UPC) model, for Boltzmann-fluid simulations. UPC is one of the current models in the so-called Partitioned Global Address Space paradigm. This ... -
Many-task computing on many-core architectures
(2016-01-01)Many-Task 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 ... -
Multi-domain grid refinement for lattice-Boltzmann simulations on heterogeneous platforms
(2016-01-01)The main contribution of the present work consists of several parallel approaches for grid refinement based on a multi-domain decomposition for lattice-Boltzmann simulations. The proposed method for discretizing the fluid ...