Sökning: "discontinuous Galerkin"

Visar resultat 16 - 20 av 29 avhandlingar innehållade orden discontinuous Galerkin.

1. 16. Developing Computational Methods for Moored Floating Wave Energy Devices

   Författare :Johannes Palm; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wave Power; RANS simulations; Discontinuous Galerkin; Mooring Dynamics;

   Sammanfattning : Floating point absorbers are a common class of wave-power devices typically designed to move with large amplitude in energetic waves. This stands in sharp contrast to traditional marine design, where the wave-excited motions of the structure are preferably kept to a minimum. LÄS MER

3. 17. Automated Computational Modeling

   Författare :Johan Jansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; multi-adaptivity; Galerkin; ODE; PDE; plasticity; elasticity; FEM; automated;

   Sammanfattning : This thesis is part of the FEniCS project of Automation of Computational Mathematical Modeling (ACMM) as the modern manifestation of the basic principle of science:formulating mathematical equations (modeling) and solving equations (computation). The vision of FEniCS is to set a new standard towards the goals of generality, efficiency, and simplicity, concerning mathematical methodology, implementation, and application. LÄS MER

4. 18. On the Finite Element Method for the Time-Dependent Ginzburg-Landau Equations

   Författare :Johan Ivarsson; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; discontinuous Galerkin method; a posteriori error estimate; adaptive finite element method; duality; residual; Ginzburg-Landau equations; superconductivity; residual;

   Sammanfattning : This thesis is primarily concerned with various issues regarding finite element approximation of the time-dependent Ginzburg-Landau equations. The time-dependent Ginzburg-Landau equations is a macroscopic, phenomenological model of superconductivity, consisting of a system of nonlinear, parabolic partial differential equations. LÄS MER

5. 19. Mooring dynamics for wave energy applications

   Författare :Johannes Palm; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hp adaptivity; Wave energy; Coupled simulations; CFD; Discontinuous Galerkin methods; OpenFOAM; Mooring dynamics; Snap loads; RANS;

   Sammanfattning : This work aims to increase the modelling accuracy of two important problems for the wave energy industry. One concerns the mooring dynamics in the presence of snap loads (shock waves in cable tension). The other is related to nonlinear effects in the resonance region of moored wave energy converters (WECs). LÄS MER

7. 20. Convergence analysis of some numerical methods for neutron transport and Vlasov equations

   Författare :Mohammad Asadzadeh; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Convergence analysis; Neutron transport equation; Vlasov-Poisson equation; Finite element methods; Quadrature rule; Streamline-Diffusion method; Discontinuous Galerkin method; Neutron transport equation;

   Sammanfattning : .... LÄS MER