Sökning: "irregular waves"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden irregular waves.

  1. 1. Modelling the Dynamics and Forcesof Wave Energy Converters using WEC-Sim

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutionen för elektroteknik

    Författare :David Johansson; [2020]
    Nyckelord :WEC-Sim; Uppsala Point Absorber; peak line force; model; irregular waves;

    Sammanfattning : The waves traveling on the surface of the world’s oceans carry atremendous amount of energy. The ability to convert this energy forhuman use has the potential to help solves the worlds energy problem. LÄS MER

  3. 2. An evaluation of deterministic prediction of ocean waves using pressure data to assist a Wave Energy Converter

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Niclas Bassili; Douglas Eriksson; [2020]
    Nyckelord :Deterministic wave prediction; Pressure sensor; Weakly dispersive reconstruction method; Time to spatial data assimilation; High-order spectral method; Determinisk vågförutsägelse; Trycksensor; Weakly dispersive reconstruction method; Time to spatial data assimilation; High-order spectral method;

    Sammanfattning : Currently, existing devices for extracting electrical power from ocean waves all suffer from problems with low efficiency due to a lack of information about the incoming waves in advance. The complex dynamic nonlinear characteristics of the ocean make the prediction of these incoming waves a great challenge. LÄS MER

  4. 3. Experimental Evaluation of Spray Reduction Technologies

    Master-uppsats, KTH/Marina system

    Författare :Svante Lundmark; [2019]
    Nyckelord :;

    Sammanfattning : This report concerns the efficiency of a novel spray deflector design. The novel design is analyzed and compared to a bare hull and a bare hull fitted with spray rails by experimental testing in a towing tank. LÄS MER

  5. 4. Benchmark Testing of Spray Deflection Technologies for High-Speed Planing Craft

    Master-uppsats, KTH/Marina system

    Författare :Bogdan Molchanov; [2018]
    Nyckelord :;

    Sammanfattning : High-speed planing craft is designed to overcome conventional hull’s speed barrier associated with wave making resistance and high frictional forces. Despite being able to reach high speeds, some planing hull forms will develop large volumes of spray attached to the hull surface, which can account for a large proportion of the total resistance. LÄS MER

  7. 5. Experimental Setup for Validating Simulated Local Structure Responses for High-speed Craft in Waves

    Master-uppsats, KTH/Marina system

    Författare :Xiangyu Lei; Jonas Persson; [2017]
    Nyckelord :high-speed craft; slamming events; experiments; validation; structural responses; Master;

    Sammanfattning : Using scantling codes such as DNV or ISO for designing high speed craft has been a routine for many constructors. However, the validity of these design methods are to be questioned, especially when dealing with modern material concepts and structural layouts, since they are based on data from ships designed in the 1960ies and 1970ies using semi-empirical methods containing substantial uncertainties and limitations. LÄS MER