Search for dissertations about: "multiresolution"

Showing result 1 - 5 of 22 swedish dissertations containing the word multiresolution.

  2. 1. Fast Adaptive Numerical Methods for High Frequency Waves and Interface Tracking

    Author : Jelena Popovic; Olof Runborg; Hongkai Zhao; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; high frequency waves; Helmholtz equation; interface tracking; time-space adaptivity; multiresolution; Hamilton-Jacobi;

    Abstract : The main focus of this thesis is on fast numerical methods, where adaptivity is an important mechanism to lowering the methods' complexity. The application of the methods are in the areas of wireless communication, antenna design, radar signature computation, noise prediction, medical ultrasonography, crystal growth, flame propagation, wave propagation, seismology, geometrical optics and image processing. READ MORE

  4. 2. Multiresolution Continuum Theory and Dislocation Density Based Constitutive Relations

    Author : Hao Qin; Kenneth Runesson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik; Centrumbildning - Centrum för högpresterande stål CHS ; Centre - Centre for High Performance Steel CHS ;

    Abstract : In classical description, the mechanical state of a material point depends on the variables defined at this point solely. It can integrate and catch some aspects of the material’s microstructure by conventional homogenization method. READ MORE

  5. 3. Multiresolution Continuum Theory Finite Element For Implicit Time Stepping Methods

    Author : Hao Qin; Sebastian Skatulla; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik;

    Abstract : The multiresolution continuum theory is a higher order continuum theory where additional kinematic variables are added to account for the microstructural inhomogeneities at several distinct length scales. This can be particularly important for localization problems. READ MORE

  6. 4. Computational Modeling of Complex Flows

    Author : Johan Hoffman; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; computational fluid dynamics; adaptive finite element method; a posteriori error estimate; subgrid modeling; transition to turbulence; multiresolution analysis; object-oriented software; computational fluid dynamics;

    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. 5. Statistically-based multiresolution network flow phase unwrapping for SAR interferometry

    Author : Gabriel Carballo; KTH; []
    Keywords : ;

    Abstract : .... READ MORE