Sökning: "coupling method"

Visar resultat 1 - 5 av 489 avhandlingar innehållade orden coupling method.

  1. 1. Analysis of slotted waveguide antennas

    Författare :Lars Manholm; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coupling junction; slot antenna; compound slot; mutual coupling; wraparound slot; waveguide slot; coupling slot; mutual admittance; edge slot; waveguide junction; moment method;

    Sammanfattning : .... LÄS MER

  2. 2. Finite Element Procedures for Fluid-structure Interaction

    Författare :Joakim Hermansson; Chalmers University of Technology; []
    Nyckelord :Nitsche s method; stabilized Crouzeix-Raviart; Winslow s method; Raviart-Thomas; space-time FE; stretched elements; FSI; FEM; weak coupling; mesh smoothing; acoustic FSI; ALE;

    Sammanfattning : This thesis concerns finite element (FE) methods for solving fluid-structure interaction (FSI) problems. Two types of fluid-structure interaction are considered. A finite element method for solving the interaction between a flowing incompressible fluid and a linear elastic structure is proposed. The flow is assumed to be laminar. LÄS MER

  3. 3. Acoustic source characterisation for non-linear in-duct sources

    Författare :Fredrik Albertson; KTH; []
    Nyckelord :in-duct source; source characterisation; non-linear source; linearity test; hybrid method; IC-engine; muffler; coupling method;

    Sammanfattning : Different ways to model acoustic in-duct sources have beenanalysed. Measurements were conducted on two diesel truckengines. It was found that for steady state oscillations, onecould linearise in the neighbourhood of a given linearisationpoint, i.e. LÄS MER

  4. 4. Theoretical Investigation on Propagation and Coupling of Nonreciprocal Electromagnetic Surface Waves

    Författare :Kexin Liu; Sailing He; Martin Norgren; Manfred Eich; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; wave propagation; coupling; magneto-optical; gyromagnetic; photonic crystal; nonreciprocity; one-way; trapped rainbow; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : This thesis aims at revealing the fundamental guiding and coupling properties of nonreciprocal electromagnetic surface waves on magneto-optical or gyromagnetic media and designing novel applications based on the properties.We introduce the background in the first chapter. LÄS MER

  5. 5. Iron or Copper? - Method Development and Mechanistic Studies on Cross-Coupling Reactions

    Författare :Per-Fredrik Larsson; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :Iron; Copper; Transition metal; Cross-coupling; Reaction mechanism; Kinetic investigation; Hammett study; Sustainable catalysis; Trace-metal; Mass-transfer; Ligand development; Ligand scope;

    Sammanfattning : The area of catalysis has had an immeasurable impact on modern society. This has been acknowledged through several Nobel prizes during the 20th century ranging from Haber (1918) for the synthesis of ammonia to Richard F. Heck, Ei-ichi Negishi, and Akira Suzuki (2010) for palladium-catalyzed cross-coupling reactions. LÄS MER