Browsing CFD Computational Technology by Title
Now showing items 1231 of 39

A FEniCSHPC framework for multicompartment BlochTorrey models
(20161130)In diffusion nuclear magnetic resonance (NMR) and diffusion magnetic resonance imaging (MRI), the multicompartment BlochTorrey equation plays an important role in probing the diffusion characteristics from a nanometer ... 
FEniCSHPC: Automated predictive highperformance finite element computing with applications in aerodynamics
(20160101)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 goaloriented adaptive mesh ... 
Finite Element Simulations of Twophase Flow and Floating Bodies Using FEniCSHPC
(201807)We present a variational multiscale stabilized finite element method to solve the variable density incompressible NavierStokes equations for the simulation of twophase flow. We introduce a levelset method based on the ... 
Finite Element simulations: computations and applications to aerodynamics and biomedicine
(20201211)Partial Differential Equations describe a large number of phenomena of practical interest and their solution usually requires running huge simulations on supercomputing clusters. Especially when dealing with turbulent ... 
Framework for adaptive fluidstructure interaction with industrial applications
(20131231)We present developments in the UnicornHPC framework for unified continuum mechanics, enabling adaptive finite element computation of fluidstructure interaction, and an overview of the larger FEniCSHPC framework for ... 
High Performance Scientific Computing in Applications with Direct Finite Element Simulation
(20200618)To predict separated flow including stall of a full aircraft with Computational Fluid Dynamics (CFD) is considered one of the problems of the grand challenges to be solved by 2030, according to NASA [1]. The nonlinear ... 
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
(20160101)[No abstract available] 
LBMHPC  An opensource tool for fluid simulations. Case study: Unified parallel C (UPCPGAS)
(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
(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 ... 
Leveraging the Performance of LBMHPC for Large Sizes on GPUs using Ghost Cells
(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 ... 
Manytask computing on manycore architectures
(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 ... 
Multidomain grid refinement for latticeBoltzmann simulations on heterogeneous platforms
(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 ... 
Multipreconditioned GMRES for Shifted Systems
(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 ... 
New Theory of Flight
(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. ... 
A Nonuniform Staggered Cartesian Grid approach for LatticeBoltzmann method
(20151231)We propose a numerical approach based on the LatticeBoltzmann method (LBM) for dealing with mesh refinement of Nonuniform Staggered Cartesian Grid. We explain, in detail, the strategy for mapping LBM over such geometries. ... 
Nonlinear computations of heave motions for a generic Wave Energy Converter
(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 ... 
Numerical simulation of the von Kármán sodium dynamo experiment
(20180903)We present hydrodynamic and magnetohydrodynamic (MHD) simulations of liquid sodium flows in the von Kármán sodium (VKS) setup. The counterrotating impellers made of soft iron that were used in the successful 2006 experiment ... 
A partition of unity finite element method for computational diffusion MRI
(2018)The Bloch–Torrey equation describes the evolution of the spin (usually water proton) magnetization under the influence of applied magnetic field gradients and is commonly used in numerical simulations for diffusion MRI ... 
Portable simulation framework for diffusion MRI
(20190923)The numerical simulation of the diffusion MRI signal arising from complex tissue microstructures is helpful for understanding and interpreting imaging data as well as for designing and optimizing MRI sequences. The ...