Browsing CFD Computational Technology by Title
Now showing items 29-43 of 43
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Nektar++: Development of the Compressible Flow Solver for Large Scale Aeroacoustic Applications
Lindblad, D.; Isler, J.; Moragues, M.
; Sherwin, S.J.; Cantwell, C. (2023)
A recently developed computational framework for jet noise predictions is presented. The framework consists of two main components, focusing on source prediction and noise propagation. To compute the noise sources, ... -
New Theory of Flight
Hoffman, J.; Jansson, J.; Claes, J. (2016-01-01)
We present a new mathematical theory explaining the fluid mechanics of subsonic flight, which is fundamentally different from the existing boundary layer-circulation theory by Prandtl–Kutta–Zhukovsky formed 100 year ago. ... -
A Non-uniform Staggered Cartesian Grid approach for Lattice-Boltzmann method
(2015-12-31)We propose a numerical approach based on the Lattice-Boltzmann method (LBM) for dealing with mesh refinement of Non-uniform 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
Janson, C.E.; Shiri, A.; Jansson, J.; Moragues, M.; Castanon, D.; Saavedra, L.; Degirmenci, N.C.; Leoni, M. (2018)
A bench-marking 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
(2018-09-03)We present hydrodynamic and magnetohydrodynamic (MHD) simulations of liquid sodium flows in the von Kármán sodium (VKS) set-up. The counter-rotating impellers made of soft iron that were used in the successful 2006 experiment ... -
A partition of unity finite element method for computational diffusion MRI
Nguyen, V.D.; Jansson, J.; Hoffman, J.; Li, J.R. (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
Nguyen, V.D.; Leoni, M.; Dancheva, T.; Jansson, J.; Hoffman, J.; Wassermann, D.; Li, J.R. (2019-09-23)
The numerical simulation of the diffusion MRI signal arising from complex tissue micro-structures is helpful for understanding and interpreting imaging data as well as for designing and optimizing MRI sequences. The ... -
Simulation of the HarshLab floating platform for offshore experimentation using FEniCS-HPC
Moragues, M.; Castanon, D.; Jansson, J.; Nava, V.; Krishnasamy, E.; Degirmenci, N.C.; Nguyen, V.D.; Garrido, C.; Sanchez, M.; Rodriguez-Arias, R. (2017)
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Time-resolved Adaptive Direct FEM Simulation of High-lift Aircraft Configurations
Jansson, J.; Krishnasamy, E.; Leoni, M.; Jansson, N.; Hoffman, J. (2017-08-01)
Our simulation methodology is referred to as Direct FEM Simulation (DFS), or General Galerkin (G2) and uses a finite element method (FEM) with piecewise linear approximation in space and time, and with numerical stabilization ... -
Time-resolved adaptive FEM simulation of the DLR-F11 aircraft model at high Reynolds number
Hoffman, J.; Jansson, J.; Jansson, N.; de Abreu, R.V. (2014-12-31)
We present a time-resolved, adaptive finite element method for aerodynamics, together with the results from the HiLiftPW-2 workshop, where this method is used to compute the ow past a DLR-F11 aircraft model at realistic ... -
Towards a parameter-free method for high Reynolds number turbulent flow simulation based on adaptive finite element approximation
Hoffman, J.; Jansson, J.; Jansson, N.; de Abreu, R.V. (2015-05-01)
This article is a review of our work towards a parameter-free method for simulation of turbulent flow at high Reynolds numbers. In a series of papers we have developed a model for turbulent flow in the form of weak solutions ... -
Towards HPC-Embedded Case Study: Kalray and Message-Passing on NoC
(2017)Today one of the most important challenges in HPC is the development of computers with a low power consumption. In this context, recently, new embedded many-core systems have emerged. One of them is Kalray. Unlike other ... -
Towards the development of adaptive finite element methods for internal flow aeroacoustics
de Abreu, R.V.; Hoffman, J.; Jansson, J. (2013-12-31)
We report the latest results obtained in the development of an adaptive finite element method for computational aeroacoustics (CAA). The new methodology is based on the General Galerkin (G2) method, which has been successfully ... -
A two-level finite element discretization of the streamfunction formulation of the stationary quasi-geostrophic equations of the ocean
(2013-12-31)In this paper we proposed a two-level finite element discretization of the nonlinear stationary quasi-geostrophic equations, which model the wind driven large scale ocean circulation. Optimal error estimates for the two-level ... -
Variational multiscale stabilization for compressible flow
Moragues, M.; Vázquez, M.; Houzeaux, G. (2018)
This paper presents a variational multiscale stabilization for the finite element numerical solution of the Euler and Navier-Stokes equations of compressible flow. All the components of the dual operator are considered in ...