Sökning: "Department Of Applied Physics And Mechanical Engineering."

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Department Of Applied Physics And Mechanical Engineering..

  1. 1. Plasma arc welding simulation with OpenFOAM

    Detta är en avhandling från Göteborg, Sweden : Chalmers University of Technology

    Författare :Margarita Sass-Tisovskaya; Högskolan Väst.; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : A simulation tool that is valid within the field of tandem arc welding(unsteady, three dimensional thermal plasma flow) has been developed,based on the open source CFD package OpenFOAM. The validation of the electromagnetic part of the solver has been done separately using a problem with a known solution. LÄS MER

  2. 2. Modelling of Solid Oxide Fuel Cells Applied to the Analysis of Integrated Systems with Gas Turbines

    Detta är en avhandling från Department of Heat and Power Engineering, Lund university

    Författare :Azra Selimovic; [2002]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; statistical physics; plasma; plasmas; Gaser; fluiddynamik; Termisk teknik; termodynamik; Gases; fluid dynamics; applied thermodynamics; Thermal engineering; Hybrid Cycles; Gas Turbines; Mathematical Modelling; Electrochemistry; Fuel Cells; Solid Oxide Fuel Cells; thermodynamics; Matematisk och allmän teoretisk fysik; klassisk mekanik; kvantmekanik; relativitet; gravitation; statistisk fysik; Mathematical and general theoretical physics; classical mechanics; quantum mechanics; relativity;

    Sammanfattning : Solid oxide fuel cells (SOFCs), working at high temperatures with an incomplete fuel oxidation process, have become an interesting candidate for combination with conventional power generation technology, such as gas turbines, in order to develop power plants that are both functional and efficient. An absolute condition for successful analysis and optimisation of such plants is the existence of reliable simulation tools. LÄS MER

  3. 3. Automatic and experimental methods to studying forwarding work

    Detta är en avhandling från ; Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences

    Författare :Jussi Manner; Sveriges lantbruksuniversitet.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Although forwarding has been carried out for 50 years, much is still unknown about this work. This is partly because there are numerous influential factors, and relevant data are often difficult to gather. In current forwarding productivity literature, there is generally a trade-off between representativeness and work element-specificity. LÄS MER

  4. 4. Development of a Multidimensional Residual Distribution Solver for Large Eddy Simulation of Industrial Turbulent Flows

    Detta är en avhandling från Ole Romers Vag 1, Box 118, SE 22100, Lund Sweden

    Författare :Doru Caraeni; [2000]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal engineering; High-Order Compact Schemes.; Compressible Flows; Parallel Computations; Multidimensional Residual Distribution Schemes; Large Eddy Simulation; applied thermodynamics; Termisk teknik; termodynamik;

    Sammanfattning : This thesis presents the results of the author's research activity to develop a time-space accurate flow-solver for Large Eddy Simulations (LES), based on the Multidimensional Residual Distribution approach. The aim of this work is the attempt to develop a compact high-order algorithm which includes multidimensional flow physics, in hope of creating a better algorithm for LES of turbulent compressible flows. LÄS MER

  5. 5. Weld Pool Simulations

    Detta är en avhandling från Göteborg : Department of Mathematical Sciences

    Författare :Marcus Edstorp; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Arc Welding; Weld Pool; Multiphysics Simulations; Moving Boundaries; Free Surfaces; Mesh Motion; Two-Phase Flow; Incompressible Flow; Electromagnetics; Finite Element Methods; MATHEMATICS Applied mathematics; MATEMATIK Tillämpad matematik; TECHNOLOGY Industrial engineering and economy Manufacturing engineering and work sciences Manufacturing engineering; TEKNIKVETENSKAP Industriell teknik och ekonomi Produktion och arbetsvetenskap Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : This investigation is devoted to the study of welding and its effect on the workpiece, focusing on the thermo and fluid dynamical phenomena occuring during a autogenous or nonautogenous arc fusion welding process. Its aim is to simulate the behaviour of the weld pool and analyze the consequence of the solid-liquid phase change, thus obtaining a methodology for predicting the appearance of weld defects related to solidification and cooling. LÄS MER