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Showing result 1 - 5 of 14 essays matching the above criteria.

  1. 1. Experimental study on stepped spray deflectors for planning hull

    University essay from KTH/Marina system

    Author : Luca Castaldi; [2020]
    Keywords : ;

    Abstract : Planning vessels can reach high operational speeds thanks to their hull design. Some hull forms will develop large volumes of spray attached to the hull surface. The whisker spray is a thin layer consisting in droplets of water which can ac-count for a large proportion of the total resistance. READ MORE

  3. 2. Influence of ventilation on ro-ro space fire development : A study using two-zone fire models in order to explore tendencies of how different ventilation parameters affects the fire development in a ro-ro space

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Martin Lindgren; Andreas Lilja; [2019]
    Keywords : Fire; Ro-ro space; Ventilation; Simulation; Two-zone model; Brand; Rorolastutrymme; Ventilation; Simulering; Tvåzonsmodell;

    Abstract : A ship to which vehicles and other loads can be rolled on and off is usually named ro-ro ship. A ro-ro ship consists of large corridor shaped space, normally extending to a considerable length or the entire length of the ship, which is usually loaded with various vehicles or stowage units. READ MORE

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

    University essay from KTH/Marina system

    Author : Bogdan Molchanov; [2018]
    Keywords : ;

    Abstract : 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. READ MORE

  5. 4. CFD analysis of stepped planing vessels

    University essay from KTH/Mekanik

    Author : Toni Kokkonen; [2018]
    Keywords : Computational Fluid Dynamics CFD ; Ship hydrodynamics; Planing hull; Stepped hull; STAR-CCM ; Overset mesh; Volume of fluid VOF ; Reynolds averaged Navier-Stokes equations RANS ; Dynamic instabilities;

    Abstract : High speed planing hulls are currently widely used for example in recreational and emergency vessel applications. However, very little CFD research has been done for planing vessels, especially for those with stepped hulls. A validated CFD method for planing stepped hulls could be a valuable improvement for the design phase of such hulls. READ MORE

  6. 5. Offshore Floating Platforms : Analysis of a solution for motion mitigation

    University essay from KTH/Bro- och stålbyggnad

    Author : Alberto Rodriguez Marijuan; [2017]
    Keywords : Offshore Wind; floating platform; wave tank test; hydrodynamic pressure; structural; hydrodynamic load; heave plate.;

    Abstract : Recent events regarding energy policies throughout the globe and advances in technology are making offshore wind farms become a reality. Most offshore wind farms are still, however, built close to land masses, and need to be rigidly attached to the seabed in one way or another. READ MORE