Search for dissertations about: "Stefan Johansson"

Showing result 1 - 5 of 57 swedish dissertations containing the words Stefan Johansson.

  2. 1. Acoustic Manipulation of Particles and Fluids in Microfluidic Systems

    Author : Linda Johansson; Stefan Johansson; Martin Wiklund; Uppsala universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustics; Akustik; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

    Abstract : The downscaling and integration of biomedical analyses onto a single chip offers several advantages in speed, cost, parallelism and de-centralization. Acoustic radiation forces are attractive to use in these applications since they are strong, long-range and gentle. READ MORE

  4. 2. Turbulence modeling of compressible flows with large density variation

    Author : Igor Grigoriev; Arne Johansson; Stefan Wallin; Geert Brethouwer; Stefan Hickel; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulence; DRSM; EARSM; active scalar; compressible flow; reacting flow; supercritical flow; Teknisk mekanik; Engineering Mechanics;

    Abstract : In this study we highlight the influence of mean dilatation and mean density gradient on the Reynolds stress modeling of compressible, heat-releasing and supercritical turbulent flows.Firstly, the modeling of the rapid pressure-strain correlation has been extended to self-consistently account for the influence of mean dilatation. READ MORE

  5. 3. The Use of the Continuity Factor as a Tool to Represent Representative Elementary Volume in Rock Engineering Design

    Author : Pin Zhou; Stefan Larsson; Johansson Johansson; Arild Palmström; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rock mass; scale effect; representative elementary volume; continuity factor; Civil and Architectural Engineering; Byggvetenskap;

    Abstract : .... READ MORE

  6. 4. High order difference approximations for the linearized Euler equations

    Author : Stefan Johansson; Bernhard Müller; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Abstract : The computers of today make it possible to do direct simulation of aeroacoustics, which is very computational demanding since a very high resolution is needed.In the present thesis we study issues of relevance for aeroacoustic simulations. Paper A considers standard high order difference methods. READ MORE

  7. 5. Micromechanical properties of silicon

    Author : Stefan Johansson; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE