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Aeroacoustic Analysis of a Closely Installed Chevron Nozzle Jet using the High-Order Discontinuous Galerkin Method
(2023-06-08)
In this paper, we use Large Eddy Simulations (LES) in combination with the Ffowcs Williams - Hawkings method to study the influence of chevrons on the flow field as well as the noise produced by a closely installed M = 0.6 ...
Large Eddy Simulations of Isolated and Installed Jet Noise using the High-Order Discontinuous Galerkin Method
(2023-01-19)
A recently developed computational framework for jet noise is used to compute the noise generated by an isolated and installed jet. The framework consists of two parts. In the first part, the spectral/hp element framework ...
Nektar++: Development of the Compressible Flow Solver for Large Scale Aeroacoustic Applications
(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, ...
Aeroacoustic Analysis of a Subsonic Jet using the Discontinuous Galerkin Method
(2022)
In this work, the open-source spectral/hp element framework Nektar++ (www.nektar.info) is coupled with the Antares library (www.cerfacs.fr/antares/) to predict noise from a subsonic jet. Nektar++ uses the high-order ...
Finite Element simulations: computations and applications to aerodynamics and biomedicine
(2020-12-11)
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 ...
High Performance Scientific Computing in Applications with Direct Finite Element Simulation
(2020-06-18)
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 ...
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 ...
Portable simulation framework for diffusion MRI
(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 ...
A C 0 interior penalty discontinuous Galerkin Method for fourth-order total variation flow. II: Existence and uniqueness
(2019-02-25)
We prove the existence and uniqueness of a solution of a C0 Interior Penalty Discontinuous Galerkin (C0 IPDG) method for the numerical solution of a fourth‐order total variation flow problem that has been developed in part ...
A C0 interior penalty discontinuous Galerkin method for fourth‐order total variation flow I: Derivation of the method and numerical results
(2019-02-23)
We consider the numerical solution of a fourth‐order total variation flow problem representing surface relaxation below the roughening temperature. Based on a regularization and scaling of the nonlinear fourth‐order parabolic ...