Search for dissertations about: "equation"

Showing result 6 - 10 of 1206 swedish dissertations containing the word equation.

  1. 6. Comparison equation treatment of the radial Schrödinger equation : theory and applications

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Staffan Linnaeus; Uppsala universitet.; [1986]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  2. 7. Approximating Stochastic Partial Differential Equations with Finite Elements: Computation and Analysis

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Andreas Petersson; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lévy process; Lyapunov equation; white noise; finite element method; multilevel Monte Carlo; Monte Carlo; multiplicative noise; asymptotic mean square stability; stochastic heat equation; covariance operator; weak convergence; generalized Wiener process; numerical approximation; stochastic wave equation; Stochastic partial differential equations;

    Abstract : Stochastic partial differential equations (SPDE) must be approximated in space and time to allow for the simulation of their solutions. In this thesis fully discrete approximations of such equations are considered, with an emphasis on finite element methods combined with rational semigroup approximations. READ MORE

  3. 8. Analytical vortex solutions to Navier-Stokes equation

    University dissertation from Växjö : Växjö University Press

    Author : Henrik Tryggeson; Växjö universitet.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; conical vortex; Navier-Stokes equation; analytical solution; 2-D vortices; turbulence; vortex ring; stretched vortex; coherent structures; TECHNOLOGY Engineering mechanics Fluid mechanics; TEKNIKVETENSKAP Teknisk mekanik Strömningsmekanik;

    Abstract : Fluid dynamics considers the physics of liquids and gases. This is a branch of classical physics and is totally based on Newton's laws of motion. Nevertheless, the equation of fluid motion, Navier-Stokes equation, becomes very complicated to solve even for very simple configurations. READ MORE

  4. 9. On the Matrix Riccati Equation

    University dissertation from Department of Automatic Control, Lund Institute of Technology (LTH)

    Author : Krister Mårtensson; [1970]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The matrix Riccati equation appears in many optimal control and filtering problems. In this paper the Riccati equation is studied from an algebraic point of view, and the results are applied on optimal control of linear time invariant systems with quadratic loss... READ MORE

  5. 10. Numerical Vlasov–Maxwell Modelling of Space Plasma

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Bengt Eliasson; Uppsala universitet.; Uppsala universitet.; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Vlasov equation; Maxwell equation; Fourier method; outflow boundary; domain decomposition; Numerical Analysis; Numerisk analys;

    Abstract : The Vlasov equation describes the evolution of the distribution function of particles in phase space (x,v), where the particles interact with long-range forces, but where shortrange "collisional" forces are neglected. A space plasma consists of low-mass electrically charged particles, and therefore the most important long-range forces acting in the plasma are the Lorentz forces created by electromagnetic fields. READ MORE