Search for dissertations about: "Jan Bergström"

Showing result 11 - 15 of 18 swedish dissertations containing the words Jan Bergström.

  2. 11. Modeling and numerical simulation of hydro power flows

    Author : John Bergström; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Abstract : This work is about high precision numerical water flow simulations of hydro power related applications, and especially draft tube flows. Because of the accuracy requirements for these types of simulations (the efficiency of a hydro power turbine can be over 90%), the work has been devided into several steps; verification, validation and modeling. READ MORE

  4. 12. Assessment of existing concrete bridges : bending stiffness as a performance indicator

    Author : Markus Bergström; Paulo J. de S. Cruz; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Abstract : Optimizing the use of existing civil reinforced concrete (RC) structures could be interpreted in such a way as to say that the capacity should be used and taken care of in an effective manner, both from a technical and economical point of view, keeping the safety in mind. Achieving this requires thorough understanding of the structure and also of the tools used for assessing current and future capacity and needs. READ MORE

  5. 13. Industrialised timber frame housing : managing customisation, change, and information

    Author : Max Bergström; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träbyggnad; Timber Structures;

    Abstract : The overall aim of this thesis is to develop an increased understanding of industrialised timber frame housing (timber frame housing construction fully or partially conducted in a controlled environment utilising industrial processes and machinery). Of specific interest is how industrialised timber frame housing companies manage customisation, change, and information. READ MORE

  6. 14. Computational methods for shape verification of free-form surfaces

    Author : Per Bergström; Mårten Gulliksson; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Teknisk vetenskapliga beräkningar; formverifiering; online; formmätning; Scientific Computing; Teknisk-vetenskapliga beräkningar;

    Abstract : Beräkningsmetoder för formverifiering av friformsytor utgör huvudinnehållet i denna doktorsavhandling. En gemensam egenskap för dessa metoder är att de möjliggör formverifiering online direkt i produktionslinan. Av den anledningen måste metoderna vara snabba och robusta. READ MORE

  7. 15. A Methodology for Automation of Mechanized Forest Regeneration

    Author : Håkan Lideskog; Magnus Karlberg; Dan Bergström; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computer Aided Design; Datorstödd maskinkonstruktion;

    Abstract : High quality forest regeneration is typically performed by a combination of site preparation through mounding and deep planting. These operations are performed either by mounders with subsequent manual planting, or by mechanized tree planting devices that creates mounds and, simultaneously, plant seedlings. READ MORE