21–40 von 81 Ergebnissen
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    Trajectory tracking control of underactuated USV based on modified backstepping approach

    Freier Zugriff
    Zaopeng Dong / Lei Wan / Yueming Li et al. | DOAJ | 2015
    enriched by incorporating an integral action additionally for enhancing the steady state performance and control precision of the USV trajectory ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Hull-form optimization of a container ship based on bell-shaped modification function

    Freier Zugriff
    Hee Jong Choi | DOAJ | 2015
    -linear free surface conditions and the trim and sinkage of the ship were fully taken into account. Numerical computation was performed to ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Numerical investigation of tip clearance effects on the performance of ducted propeller

    Freier Zugriff
    Ding Yongle / Song Baowei / Wang Peng | DOAJ | 2015
    Tip clearance loss is a limitation of the improvement of turbomachine performance. Previous studies show the Tip clearance loss is ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    A study on measurements of local ice pressure for ice breaking research vessel “ARAON” at the Amundsen Sea

    Freier Zugriff
    Yong-Hyeon Kwon / Tak-Kee Lee / Kyungsik Choi | DOAJ | 2015
    attaching strain gauges on the same sites inside the shell plating of ship at the port and the starboard sides in the bow thrust room. Using ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Extraction of the mode shapes of a segmented ship model with a hydroelastic response

    Freier Zugriff
    Yooil Kim / In-Gyu Ahn / Sung-Gun Park | DOAJ | 2015
    hull model of a 400 K ore carrier with 3 flexible connections was towed in a model basin under different sea states and the time histories of ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    A numerical study on manoeuvrability of wind turbine installation vessel using OpenFOAM

    Freier Zugriff
    Sungwook Lee / Booki Kim | DOAJ | 2015
    Mechanism (PMM) captive test for the bare hull of WTIV is carried out in the model basin and compared with the numerical results using RANS ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Investigation on bragg reflection of surface water waves induced by a train of fixed floating pontoon breakwaters

    Freier Zugriff
    Huei-Tau Ouyang / Kue-Hong Chen / Chi-Ming Tsai | DOAJ | 2015
    literature and good agreements were achieved. Series of parametric studies were conducted systematically to investigate the dependence of the ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Numerical analysis of NOx reduction for compact design in marine urea-SCR system

    Freier Zugriff
    Cheolyong Choi / Yonmo Sung / Gyung Min Choi et al. | DOAJ | 2015
    characteristics and urea decomposition into ammonia. The mixer caused flow recirculation and high level of turbulence intensity, and the chamber increased ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Virtual simulation of maneuvering captive tests for a surface vessel

    Freier Zugriff
    Ahmad Hajivand / S. Hossein Mousavizadegan | DOAJ | 2015
    applied to predict the turning circle and zigzag maneuvers of the model ship. The comparison of the simulated results with the available ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Study on fatigue experiment for transverse butt weldsunder 2G and 3G weld positions

    Freier Zugriff
    Sung-Wook Kang / Yong-Man Park / Beom-Seon Jang et al. | DOAJ | 2015
    strength compared to S-N curve by DNV (Det Norske Veritas), IIW (International Institute of Welding) and Eurocode 3. The difference of the 2G ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Investigation on hydrodynamic performance of a marine propeller in oblique flow by RANS computations

    Freier Zugriff
    Jianxi Yao | DOAJ | 2015
    cases of com- binations of advance ratios and oblique angles. The computed results are compared with available experimental data and discussed. ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Experimental investigation of flow characteristics around four square-cylinder arrays at subcritical Reynolds numbers

    Freier Zugriff
    Mingyue Liu / Longfei Xiao / Lijun Yang | DOAJ | 2015
    number of column spacing ratios and array attack angles were considered to investigate the parametric influences. The results comprise flow ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Dynamics modeling of a semi-submersible autonomous underwater vehicle with a towfish towed by a cable

    Freier Zugriff
    Jinmo Park / Nakwan Kim | DOAJ | 2015
    underwater vehicles consisting of a towing vehicle operated near the water surface, a tow cable, and a towfish. The towfish, which is towed by a ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Welding deformation analysis based on improved equivalent strain method considering the effect of temperature gradients

    Freier Zugriff
    Tae-Jun Kim / Beom-Seon Jang / Sung-Wook Kang | DOAJ | 2015
    little influential to the inherent strain. Thus, the effect of temperature gradients over plate thickness and plate transverse direction normal ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Hull-form optimization of KSUEZMAX to enhance resistance performance

    Freier Zugriff
    Jong-Heon Park / Jung-Eun Choi / Ho-Hwan Chun | DOAJ | 2015
    This paper deploys optimization techniques to obtain the optimum hull form of KSUEZMAX at the conditions of full-load draft and design ...
    Schlagwörter: Bow and stern hull-form optimization , Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Development of energy-saving devices for a full slow-speed ship through improving propulsion performance

    Freier Zugriff
    Jung-Hun Kim / Jung-Eun Choi / Bong-Jun Choi et al. | DOAJ | 2015
    tools. The first device WAFon composes of flow-control fins adapted for the ship wake to reduce the loss of rotational energy. The other is ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Simplified welding distortion analysis for fillet welding using composite shell elements

    Freier Zugriff
    Mingyu Kim / Minseok Kang / Hyun Chung | DOAJ | 2015
    This paper presents the simplified welding distortion analysis method to predict the welding deformation of both plate and stiffener in ...
    Schlagwörter: Prediction of welding distortion , Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    Design of the dual-buoy wave energy converter based on actual wave data of East Sea

    Freier Zugriff
    Jeongrok Kim / Hyuck-Min Kweon / Weon-Mu Jeong et al. | DOAJ | 2015
    inner and a hollow outer buoy). Multiple resonant frequencies in proposed WEC affect the Power Ttake-off (PTO) performance of the WEC. Based on ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    A prediction method of ice breaking resistance using a multiple regression analysis

    Freier Zugriff
    Seong-Rak Cho / Sungsu Lee | DOAJ | 2015
    The two most important tasks of icebreakers are first to secure a sailing route by breaking the thick sea ice and second to sail ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    A new finite element formulation for vibration analysis of thick plates

    Freier Zugriff
    Ivo Senjanović / Nikola Vladimir / Dae Seung Cho | DOAJ | 2015
    , is presented. Bending deflection is used as a potential function for the definition of total (bending and shear) deflection and angles of ...
    Schlagwörter: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering