Sökning: "Andreas Ludwig"

Hittade 3 avhandlingar innehållade orden Andreas Ludwig.

  1. 1. Melt convection in welding and crystal growth

    Författare :Minh Do-Quang; Gustav Amberg; Andreas Ludwig; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; thermocapillary convection; gas-tungsten arc welding; floating zone; parallel computing; finite element method; Teknisk fysik; Engineering physics; Teknisk fysik;

    Sammanfattning : A parallel finite element code with adaptive meshing was developed and used to study three dimensional, time-dependent fluid flows caused by thermocapillary convection as well as temperature and dopant distribution in fusion welding and floating zone crystal growth. A comprehensive numerical model of the three dimensional time-dependent fluid flows in a weld pool had been developed. LÄS MER

  3. 2. Fackets kulturkris : metaforer som organixationsterapi

    Författare :Andreas Bergsten; Maria Hammarén; Bjørn Gustavsen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; unions; the Swedish model; cultural crisis; management; organizational culture; organizational development; organizational therapy; psychoanalysis; Wittgenstein; analogical thinking; metaphor; dialogue; Industrial organisation; administration and economics; Industriell organisation; administration och ekonomi;

    Sammanfattning : Union representatives today have constantly to discuss and redefine their roles, as established patterns of negotiation and decision-making changes. The Swedish model of collective bargaining and corporatist representation in government has slowly been weakened and unions seek new ways of serving the interests of their members. LÄS MER

  4. 3. PIV in Practice

    Författare :Torbjörn Green; Andreas Fouras; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : Experimental fluid mechanics has for a long time been used to visualize flow phenomenonqualitatively. Traditionally, visualization has been done with dye or tracer particle dueto their ability to follow the flow pattern well. LÄS MER