Sökning: "arbitrary"

Visar resultat 21 - 25 av 670 avhandlingar innehållade ordet arbitrary.

  1. 21. Waveguide slot antennas with cylindrical outer structures

    Författare :Johan Wettergren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cylindrical structures; arbitrary cross sections; waveguide slots; two-dimensional solutions; slot admittance; cylindrical antennas; moment method; slot antennas; spectral domain; cylindrical geometries;

    Sammanfattning : .... LÄS MER

  3. 22. Patient-Specific Finite Element Modeling of the Blood Flow in the Left Ventricle of a Human Heart

    Författare :Jeannette Hiromi Spühler; Johan Hoffman; Johan Jansson; Mariano Vazquez; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Finite element method; Arbitrary Lagrangian-Eulerian method; Fluid-Structure interaction; Contact model; parallel algorithm; blood flow; left ventricle; aortic valves; patient-specific heart model;

    Sammanfattning : Heart disease is the leading cause of death in the world. Therefore, numerous studies are undertaken to identify indicators which can be applied to discover cardiac dysfunctions at an early age. LÄS MER

  4. 23. A study of hydroelastic fluid-structure interaction with application to immersed cantilevers

    Författare :Johan Lorentzon; Strömningsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Partitioned Fluid-Structure; Blocked Gauss-Seidel; Jacobian-free Newton-Krylov methods; Incompressible fluid; Finite Strain; Total Lagrangian; Arbitrary Lagrange Euler method; Vector acceleration;

    Sammanfattning : This study presents an approach for partitioned fluid-structure interaction (FSI) applied to large structural deformations, where an incompressible turbulent solver is combined with a structural solver. The implementation is based upon two different open-source libraries by using MPI as a parallel communication protocol, the packages deal. LÄS MER

  5. 24. A Network Model Applied to Cellulose Fibre Materials

    Författare :Susanne Heyden; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Network mechanics; Fibre network; Cellulose fibres; Fracture; Stiffness; Computer simulation;

    Sammanfattning : A network mechanics model for analysis of materials made of dry-shaped cellulose fibres is proposed. In terms of the model, the network is composed of fibres of arbitrary distribution in length, curvature, cross-section. stiffness and strength. The fibres are arranged in a random structure according to an arbitrary orientation distribution. LÄS MER

  7. 25. Tyre Noise over Impedance Surfaces - Efficient Application of the Equivalent Sources Method

    Författare :François-Xavier Bécot; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Reduction of the transportation noise nuisance has become an important challenge in today's societies. As a consequence of engine noise reduction, tyre / road contact noise is now the main source of traffic noise under normal driving conditions. LÄS MER