Search for dissertations about: "micro mechanics"

Showing result 1 - 5 of 76 swedish dissertations containing the words micro mechanics.

  1. 1. Modeling of dielectrophoresis in micro and nano systems

    University dissertation from Stockholm : KTH

    Author : Yuan Lin; KTH.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dielectrophoresis; micro particle; molecular dynamics; single-walled carbon nanotubes; hydrodynamics; particle-particle interaction; superimposed; multi-step; TECHNOLOGY Engineering mechanics Fluid mechanics; TEKNIKVETENSKAP Teknisk mekanik Strömningsmekanik;

    Abstract : This thesis presents models and simulations of dielectrophoretic separation of micro and nano particles. The fluid dynamics involved and the dielectric properties of water inside single-walled carbon nanotube are studied as well. READ MORE

  2. 2. A Realizable Hybrid Mixture-Bubble Model for Cavitating Flows

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Ebrahim Ghahramani; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multi-scale model; Homogeneous mixture model; Cavitation; Disperse multiphase flow; Eulerian-Lagrangian model; OpenFOAM;

    Abstract : Cavitating multi-phase flows include an extensive range of cavity structures with different length scales, from micro bubbles to large sheet cavities that may fully cover the surface of a device. To avoid high computational expenses, incompressible transport equation models are considered a practical option for simulation of large scale cavitating flows, normally with limited representation of the small scale vapour structures. READ MORE

  3. 3. Realistic Package Opening Simulations An Experimental Mechanics and Physics Based Approach

    University dissertation from Karlskrona : Blekinge Institute of Technology

    Author : Eskil Andreasson; Blekinge Tekniska Högskola.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymer; aluminium foil; semi-crystalline; progressive damage; Abaqus;

    Abstract : A finite element modeling strategy targeting package opening simulations is the final goal with this work. The developed simulation model will be used to proactively predict the opening compatibility early in the development process of a new opening device and/or a new packaging material. READ MORE

  4. 4. Numerical Simulation of Combustion and Gasification of Biomass Particles

    University dissertation from Karlskrona : Blekinge Institute of Technology

    Author : Fatehi Hesameddin; Lunds universitet.; Lund University.; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermochemical Conversion; Pyrolysis; Gasification; Combustion; Biomass;

    Abstract : Popular Abstract in English Most of us are familiar with using plant-derived material such as wood for producing heat for warming the cottages or cooking food when we are camping. Apart from that, plant-derived materials such as trees, forest residues, grasses, agricultural crops, agricultural residues and straw have great potential in producing energy in a larger scale. READ MORE

  5. 5. Direct numerical simulation of turbulent premixed flames at high Karlovitz numbers: structure and modelling

    University dissertation from Department of Energy Sciences, Lund University

    Author : Thommie Nilsson; Lunds universitet.; Lund University.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Direct numerical simulation; Computational fluid dynamics; Combustion model; Premixed flame; Turbulence; Karlovitz number;

    Abstract : There has been recent increased interest in premixed flames and in particular for use in gas turbines for power generation. This is a development that follows from increasing demands for high efficiency and low emissions of NOx, which can be achieved by using premixed flames and lean pre-heated mixtures, often close to the lean flammability limit. READ MORE