Sökning: "DNV"

Visar resultat 16 - 20 av 34 uppsatser innehållade ordet DNV.

  1. 16. Ship response estimation in early design stage

    Master-uppsats, KTH/Marina system

    Författare :Xiaochi Cai; [2016]
    Nyckelord :preliminary design; NAPA; nonlinearity; strip method; ship response;

    Sammanfattning : A practical way to estimate the ship response in early design stage is investigated in this thesis. Focus has been put on the ship vertical bending moment and shear force in operation area. ISSC spectrum is used to indicate the sea state. Napa strip method is employed to derive the transfer function. LÄS MER

  3. 17. EVALUATION OF CLASSIFICATION RULES FOR DESIGN LOADS AND STRUCTURE RESPONSES IN HIGH-SPEED CRAFT

    Master-uppsats, KTH/Marina system

    Författare :Anders Gustavsson; Nathaniel Frithiof; [2014]
    Nyckelord :;

    Sammanfattning : Following the merger of the two classification societies Det Norske Veritas (DNV) and Germanischer Lloyds (GL) in September 2013 the need for a harmonized High Speed Craft (HSC) classification rule set emerged. In this study the respective rules for the bottom structure of HSC where checked against each other. LÄS MER

  4. 18. ICE LOADS AND RESISTANCES ON A SMALL COMMUTER VESSEL : A comparative study of rule based design and analytical ice loads and resistances

    Master-uppsats, KTH/Marina system

    Författare :Axel Berggren; Ebba Lindh; [2014]
    Nyckelord :;

    Sammanfattning : The aim of the thesis is to investigate what the results are when applying DNV ice class design rules on a vessel that falls outside the validity range and how it does compare to direct calculations. The vessel to be investigated is a smaller ice going commuter ferry intended for freshwater Lake Mälaren in Stockholm. LÄS MER

  5. 19. Investigating the influence of farm layout on the energy production of simple wind park configurations

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Sercan Uysal; [2014]
    Nyckelord :renewable energy; wind energy; wind turbines; wake effect; wake loss; wind farm; wake models; windfarmer; layout optimization;

    Sammanfattning : The interaction between wind turbines in simple wind farm layouts is investigated with the purpose of observing the influence of wake loss phenomenon on the energy production of downwind turbines. Following an intensive exploration stage about wind farm aerodynamics and wake modeling subjects, several tests cases are designed to represent various wind farm configurations, consisting of different number of wind turbines. LÄS MER

  7. 20. Conceptual Study of a USV for theSwedish Navy

    Master-uppsats, KTH/Marina system

    Författare :Karl Blomberg; Jonas Gross; [2014]
    Nyckelord :;

    Sammanfattning : This thesis is an initial conceptual study of an unmanned surface vehicle (USV) for the Swedish Navy. The purpose is to highlight challenges and possibilities connected to unmanning a vessel and to suggest one specific concept. LÄS MER