Search for dissertations about: "a posteriori error estimate"

Showing result 21 - 25 of 29 swedish dissertations containing the words a posteriori error estimate.

  2. 21. An adaptive finite element method for the compressible Euler equations

    Author : Murtazo Nazarov; Johan Hoffman; Mats Larsson; KTH; []
    Keywords : ;

    Abstract : This work develops a stabilized finite element method for the compressible Euler equations and proves an a posteriori error estimate for the approximated solution. The equations are approximated by the cG(1)cG(1) finite element method with continuous piecewise linear functions in space and time. READ MORE

  4. 22. Adaptivity for Stochastic and Partial Differential Equations with Applications to Phase Transformations

    Author : Erik von Schwerin; Anders Szepessy; Desmond Higham; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Numerical analysis; Numerisk analys;

    Abstract : his work is concentrated on efforts to efficiently compute properties of systems, modelled by differential equations, involving multiple scales. Goal oriented adaptivity is the common approach to all the treated problems. READ MORE

  5. 23. Efficient and Reliable Simulation of Quantum Molecular Dynamics

    Author : Katharina Kormann; Sverker Holmgren; Gunilla Kreiss; Hans O. Karlsson; Christian Lubich; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; time-dependent Schrödinger equation; quantum optimal control; exponential integrators; spectral elements; radial basis functions; global error control and adaptivity; high-performance computing implementation; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Abstract : The time-dependent Schrödinger equation (TDSE) models the quantum nature of molecular processes.  Numerical simulations based on the TDSE help in understanding and predicting the outcome of chemical reactions. READ MORE

  6. 24. Computational modeling of complex flow : Doctoral thesis at Chalmers University of Technology

    Author : Johan Hoffman; Claes Johnson; Ragnar Winter; Chalmers; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In this thesis we consider the following aspects of computational modeling of complex flows: (i) subgrid modeling, (ii) stability, (iii) a posteriori error estimation, and (iv) computational platform. We develop a framework for adaptivity and error control for multiscale problems, in particular for turbulent flow, based on a posteriori error estimates. READ MORE

  7. 25. Numerical methods for quantum molecular dynamics

    Author : Katharina Kormann; Sverker Holmgren; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Abstract : The time-dependent Schrödinger equation models the quantum nature of molecular processes. Numerical simulations of these models help in understanding and predicting the outcome of chemical reactions. READ MORE