Search for dissertations about: "Multi-objective optimization"

Showing result 16 - 20 of 39 swedish dissertations containing the words Multi-objective optimization.

  1. 16. Optimal Estimation of Grain Orientation in an Anisotropic Weld by Ultrasonic Techniques

    University dissertation from Chalmers University of Technology

    Author : Qingwei Liu; Chalmers tekniska högskola.; Chalmers University of Technology.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fastkroppsmekanik; Solid mechanics; anisotropic weld model; 2D ray tracing; ultrasonic probe model; nonlinear optimization; multi-objective genetic algorithm;

    Abstract : Grain orientation in an anisotropic weld highly influences ultrasound paths and thus is a significant parameter when making simulations of ultrasonic testing of anisotropic welds. Though each weld is thought to be unique in its structure, the common procedure in modeling is to prescribe the grain orientation in a weld based on limited experience. READ MORE

  2. 17. Numerical Optimization of a propeller in a given wake and behind a ship

    University dissertation from Chalmers University of Technology

    Author : Kaijia Han; Chalmers tekniska högskola.; Chalmers University of Technology.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningsmekanik; Fluid mechanics; optimization; propeller geometry; full scale; Hamburg test case; cavitation; verification; correction; iteration number; grid density; efficiency; pressure fluctuation; delivered power; RANS;

    Abstract : The work presented in this thesis includes two stages in a research project at the Rolls-Royce University Technology Center (UTC) at Chalmers Technology University. The objective of the project is to develop an optimization technique for ship/propeller interaction. READ MORE

  3. 18. Slab Frame Bridges Structural Optimization Considering Investment Cost and Environmental Impacts

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Majid Solat Yavari; KTH.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Slab frame bridge; Structural design; Cost optimization; Optimization of environmental impact; Life cycle assessment; Genetic algorithm; Pattern search method; Civil and Architectural Engineering; Byggvetenskap;

    Abstract : This research encompasses the automated design and structural optimization of reinforced concrete slab frame bridges, considering investment costs and environmental impacts. The most important feature of this work is that it focusses on realistic and complete models of slab frame bridges rather than on optimization of only individual members or sections of a bridge. READ MORE

  4. 19. Effects of Watershed Dynamics on Water Reservoir Operation Planning Considering the Dynamic Effects of Streamflow in Hydropower Operation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Nicholas Zmijewski; KTH.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reservoir operation; dispersion processes; wave diffusion; multi-objective operation; water resource management; discharge variability; power spectrum analysis; Civil and Architectural Engineering; Byggvetenskap;

    Abstract : Water reservoirs are used to regulate river discharge for a variety of reasons, such as flood mitigation, water availability for irrigation, municipal consumption and power production purposes. Recent efforts to increase the amount of renewable power production have seen an increase in intermittent climate-variable power production due to wind and solar power production. READ MORE

  5. 20. District heating system analysis and challenges within the urban transformation of Kiruna

    University dissertation from Luleå : Luleå University of Technology

    Author : Mattias Vesterlund; Luleå tekniska universitet.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; District heating; analysis; optimization; design; heat production; Energy Engineering; Energiteknik;

    Abstract : There is currently an ongoing urban transformation in a small Swedish town named Kiruna, it is located in the very north of Sweden well above the Arctic Circle in a sub-arctic climate. Large part of the town will be relocated due to the ground deformation that is caused by the progressing iron ore mining activity and it is affecting all infrastructures of the town. READ MORE