Sökning: "discontinuous Galerkin method"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden discontinuous Galerkin method.

1. 1. Computation of Underwater Acoustic Wave Propagation Using the WaveHoltz Iteration Method

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Paul Wall; [2022]
   Nyckelord :WaveHoltz iteration method; Helmholtz equation; Discontinuous Galerkin methods; Underwater acoustics.; WaveHoltziterativametod; Helmholtzekvation; DiskontinuerligaGalerkinmetoder; Undervattensakustik.;

   Sammanfattning : In this thesis, we explore a novel approach to solving the Helmholtz equation,the WaveHolz iteration method. This method aims to overcome some ofthe difficulties with solving the Helmholtz equation by providing a highlyparallelizable iterative method based on solving the time-dependent Waveequation. LÄS MER

3. 2. Discontinuous Galerkin Method for Liquid Chromatography Modelling

   Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

   Författare :Sara Culligan; [2022]
   Nyckelord :;

   Sammanfattning : Chromatography is a separation technique used predominantly by the medical industry in purification and extraction of components in a solution. The setup is a column filled with resin particles where a solution of two components is filtered and separated due to different rates of interaction with the resin particles. LÄS MER

4. 3. Conservative Discontinuous Cut Finite Element Methods: Convection-Diffusion Problems in Evolving Bulk-Interface Domains

   Master-uppsats, KTH/Matematik (Inst.)

   Författare :Sebastian Myrbäck; [2022]
   Nyckelord :numerical analysis; mathematical modeling; convection-diffusion equation; partial differential equation; unfitted method; CutFEM; finite element method; discontinuous Galerkin method; numerisk analys; matematisk modellering; konvektions-diffusionsekvationer; partiella differentialekvationer; finita elementmetoden; diskontinuerliga Galerkinmetoden;

   Sammanfattning : This work entails studying unfitted finite element discretizations for convection-diffusion equations in domains that evolve in time. In particular, these partial differential equations model the evolution of the concentration of soluble surfactants in bulk-interface domains. LÄS MER

5. 4. Subgrid finite volume preconditioner for Discontinuous Galerkin implemented in the DUNE framework

   Master-uppsats, Lunds universitet/Matematik LTH

   Författare :Johannes Kasimir; [2021]
   Nyckelord :discontinuous galerkin spectral element method; dune; high performance computing; numerical analysis; numerical methods; fluid dynamics; simulation; multigrid; iterative methods; Technology and Engineering;

   Sammanfattning : A Jacobian free multigrid preconditioner for linear problems arising from Implicit Discontinuous Galerkin (DG) discretizations is implemented. The preconditioner is based on a multigrid method for a low order Finite volume (FV) discretization on a subcellgrid. L2-projections are introduced as a strategy to translate between the discretizations. LÄS MER

7. 5. Implementation of 3 stage Lobatto IIIC into the Assimulo package

   Kandidat-uppsats, Lunds universitet/Matematik (naturvetenskapliga fakulteten); Lunds universitet/Matematikcentrum

   Författare :Edmund Aristid Lehsten; [2021]
   Nyckelord :3 Stage Lobatto IIIC; Lobatto IIIC; Assimulo; Mathematics and Statistics;

   Sammanfattning : In recent years, the popularity of discontinuous Galerkin methods has increased. As shown in [19], a result exists that states that the Discontinuous Galerkin space approximations (DG) are equivalent to the Lobatto IIIC Runge-Kutta method. LÄS MER