Sökning: "numerical analysis"

Visar resultat 1 - 5 av 1137 avhandlingar innehållade orden numerical analysis.

  1. 1. Free Boundary Problems of Obstacle Type, a Numerical and Theoretical Study

    Detta är en avhandling från Uppsala : Department of Mathematics

    Författare :Mahmoudreza Bazarganzadeh; Uppsala universitet.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Partial differential equations; Numerical analysis; Free boundary problems; Mathematics; Matematik;

    Sammanfattning : This thesis consists of five papers and it mainly addresses the theory and schemes to approximate the quadrature domains, QDs. The first deals with the uniqueness and some qualitative properties of the two QDs. The concept of two phase QDs, is more complicated than its one counterpart and consequently introduces significant and interesting open. LÄS MER

  3. 2. Numerical Analysis of Evolution Problems in Multiphysics

    Detta är en avhandling från Göteborg : Chalmers tekniska högskola

    Författare :Anna Persson; Göteborgs universitet.; Gothenburg University.; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Regularity; generalized finite element; localized orthogonal decomposition; multiscale finite element method; Thermoelasticity; Riccati equations; thermistor; linear elasticity; Joule heating; parabolic equations; regularity; multiscale; finite element method;

    Sammanfattning : In this thesis we study numerical methods for evolution problems in multiphysics. The term multiphysics is commonly used to describe physical phenomena that involve several interacting models. Typically, such problems result in coupled systems of partial differential equations. LÄS MER

  4. 3. Long-Wavelength Vertical-Cavity Lasers Materials and Device Analysis

    Detta är en avhandling från Kista : Mikroelektronik och informationsteknik

    Författare :Sebastian Mogg; KTH.; [2003]
    Nyckelord :VCL; VCSEL; vertical-cavity laser; semiconductor laser; long-wavelength; DBR; characterization; analysis; InP; InGaAs; quantum well; numerical modeling;

    Sammanfattning : Vertical-cavity lasers (VCLs) are of great interest as lightsources for fiber-optic communication systems. Such deviceshave a number of advantages over traditional in-plane laserdiodes, including low power consumption, efficient fibercoupling, on-chip testability, as well as potential low-costfabrication and packaging. LÄS MER

  5. 4. On a finite element method for estimating the penetration of frost in ground : discussion and numerical experiences

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Harry Hanse; [1984]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Matematik; Mathematics;

    Sammanfattning : .... LÄS MER

  7. 5. FRCM-Composites for Strengthening Concrete Walls with Openings Experimental and Numerical Analysis

    Detta är en avhandling från Luleå : Luleå University of Technology

    Författare :Cristian Sabau; Luleå tekniska universitet.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; FRCM; reinforced concrete; walls; openings; strenghtening; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : Upgrading existing buildings to new functional requirements may require new openings that can weaken the structure, prompting the need for strengthening. In such cases, traditional strengthening solutions, such as creating a reinforced concrete or steel frame around the opening, imply long-term restrictions in the use of the structure. LÄS MER