Search for dissertations about: "low-order models"

Showing result 1 - 5 of 39 swedish dissertations containing the words low-order models.

  2. 1. Computer aided modelling of distributed parameter processes

    Author : Mats Molander; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; orthogonal collaction; Method of Weighed Residuals; Modelling; polynominal approximations; computer aided modelling; low-order models; Mathematical analysis; tunnel furnaces; electric transmission lines; packed bed distillation columns; Distributed parameter process;

    Abstract : .... READ MORE

  4. 2. Volterra Modeling and Estimation of the Human Smooth Pursuit

    Author : Viktor Bro; Alexander Medvedev; Geoff Chase; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Volterra models; Volterra-Laguerre models; Nonlinear modeling; Smooth pursuit; Eye tracking; Elektroteknik med inriktning mot reglerteknik; Electrical Engineering with specialization in Automatic Control;

    Abstract : This thesis treats the mathematical modeling of the human smooth pursuit system using Volterra-Laguerre models. The smooth pursuit system allows for tracking of moving objects. Since it is a complex system including the muscles of the eye, nerves and certain parts of the brain, the system may be impaired if some part is compromised. READ MORE

  5. 3. Large Eddy Simulation of Turbulent Flows in Combustor Related Geometries

    Author : Jessica Gullbrand; Institutionen för energivetenskaper; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mechanical engineering; Energiforskning; Energy research; Cartesian grid; high order wall treatment; SGS models; turbulence; subgrid scale models; LES; Large Eddy Simulation; akustik; vibrationer; vakuumteknik; hydraulik; vibration and acoustic engineering; Maskinteknik; vacuum technology; hydraulics;

    Abstract : Numerical simulations using Large Eddy Simulation (LES) are applied to turbulent swirling flow fields. The swirling motion is often introduced into combustors to act as flame holders or enhance the mixing between species. Different turbulence models capture the swirling motion more or less accurately. READ MORE

  6. 4. Application of Differential Geometry to Elasticity and Corresponding Discrete Models

    Author : Nina Lautersztajn-S.; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mechanical systems; differential geometry; isoparametric four-node elements; Lie groups; non-linear elasticity; elasticity; finite element method;

    Abstract : The amazing development in technology and industry during the last half of the twentieth century has opened totally new research fields. One of them is computational mechanics. Suddenly very complex, three-dimensional nonlinear engineering problems could be solved as a consequence of explosive advances in computers and numerical schemes. READ MORE

  7. 5. On the choice of initial state in numerical weather prediction models

    Author : Lennart Thaning; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis deals with the problem of initializing numerical weather prediction models based on the primitive equation system. The normal mode approach is used i.e. the variables are projected on the eigensolutions of the linearized model equations. READ MORE