Exploració per tema "High-order"
Ara es mostren els items 1-15 de 15
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Defining a stretching and alignment aware quality measure for linear and curved 2D meshes
(Springer, 2018)
Text en actes de congrés
Accés obertWe define a regularized shape distortion (quality) measure for curved high-order 2D elements on a Riemannian plane. To this end, we measure the deviation of a given 2D element, straight-sided or curved, from the stretching ... -
Defining an2-disparity measure to check and improve the geometric accuracy of noninterpolating curved high-order meshes
(Elsevier, 2015)
Text en actes de congrés
Accés obertWe define an2-disparity measure between curved high-order meshes and parameterized manifolds in terms of an2norm. The main application of the proposed definition is to measure and improve the distance between a curved high-order ... -
Efficiency and accuracy of high-order computations and reduced order modelling in coastal engineering wave propagation problems
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialSeveral numerical issues have to be considered when solving wave propagation problems, between which there are the artificial boundary conditions, the small geometrical features that can be influential or the variable ... -
Extended hybridizable discontinuous galerkin with heaviside enrichment for heat bimaterial problems
(2017-01-28)
Article
Accés obertA novel strategy for the hybridizable discontinuous Galerkin (HDG) solution of heat bimaterial problems is proposed. It is based on eXtended finite element philosophy, together with a level set description of interfaces. ... -
HDGlab: an open-source implementation of the hybridisable discontinuous Galerkin method in MATLAB
(2020-10-22)
Article
Accés obertThis paper presents HDGlab, an open source MATLAB implementation of the hybridisable discontinuous Galerkin (HDG) method. The main goal is to provide a detailed description of both the HDG method for elliptic problems and ... -
High-order hybridizable discontinuous Galerkin formulation for one-phase flow through porous media
(2021-03-06)
Article
Accés obertWe present a stable high-order hybridizable discontinuous Galerkin (HDG) formulation coupled with high-order diagonal implicit Runge–Kuta (DIRK) schemes to simulate slightly compressible one-phase flow through porous media. ... -
High-order hybridizable discontinuous Galerkin formulation with fully implicit temporal schemes for the simulation of two-phase flow through porous media
(John Wiley & Sons, 2021-07-30)
Article
Accés obertWe present a memory-efficient high-order hybridizable discontinuous Galerkin (HDG) formulation coupled with high-order fully implicit Runge-Kutta schemes for immiscible and incompressible two-phase flow through porous ... -
High-order maximum-entropy collocation methods
(2020-08-01)
Article
Accés obertThis paper considers the approximation of partial differential equations with a point collocation framework based on high-order local maximum-entropy schemes (HOLMES). In this approach, smooth basis functions are computed ... -
Hybridisable discontinuous Galerkin formulation of compressible flows
(2021)
Article
Accés obertThis work presents a review of high-order hybridisable discontinuous Galerkin (HDG) methods in the context of compressible flows. Moreover, an original unified framework for the derivation of Riemann solvers in hybridised ... -
Hybridizable Discontinuous Galerkin with degree adaptivity for the incompressible Navier-Stokes equations
(Elsevier, 2014-07-02)
Article
Accés obertA degree adaptive Hybridizable Discontinuous Galerkin (HDG) method for the solution of the incompressible Navier-Stokes equations is presented. The key ingredient is an accurate and computationally inexpensive a posteriori ... -
Maximum-principle preserving space–time isogeometric analysis
(2019-09)
Article
Accés obertIn this work we propose a nonlinear stabilization technique for convection–diffusion–reaction and pure transport problems discretized with space–time isogeometric analysis. The stabilization is based on a graph-theoretic ... -
Numerical solution of the Helmholtz Equation using high-order continuous Galerkin methods
(Universitat Politècnica de Catalunya, 2017-07)
Projecte Final de Màster Oficial
Accés obertWe show a continuous Galerkin formulation with high-order polynomials to solve the Helmholtz equation. High-order formulations obtain solutions with less numerical error, and can use curved high-order meshes to approximate ... -
On a high-order energy-preserving unconditionally stable discretization on collocated unstructured grids
(European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
Text en actes de congrés
Accés obertIn this work, an energy-preserving unconditionally stable fractional step method on collocated unstructured grids is presented. Its formulation is based on preserving the underlying symmetries of the differential operators. ... -
Power factor correction and harmonic compensation using second-order odd-harmonic repetitive control
(2012-07-19)
Article
Accés restringit per política de l'editorialRepetitive control has proven to be an efficient control technique in power factor correction by active filtering. Unfortunately, this technique shows a dramatic performance decay when the network frequency is not exactly ... -
Segregated Runge-Kutta methods for the incompressible Navier-Stokes equations
(John Wiley & Sons, 2016-02-03)
Article
Accés obertIn this work, we propose Runge-Kutta time integration schemes for the incompressible Navier-Stokes equations with two salient properties. First, velocity and pressure computations are segregated at the time integration ...