1–20 von 23 Ergebnissen
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    Validation of 4DOF maneuvering coefficients optimization using hydrodynamic force and moment estimated from free-running model test results

    Freier Zugriff
    Kiwon Kim / Sungeun Choi / Jeonghwa Seo et al. | DOAJ | 2024
    The present study concerns validation of data-driven modeling for ship dynamics from free-running model test results, in terms of ...

    Unsteady flow around a two-dimensional section of a vertical axis turbine for tidal stream energy conversion

    Freier Zugriff
    Hyun Ju Jung / Ju Hyun Lee / Shin Hyung Rhee et al. | DOAJ | 2009
    fluid dynamics tool solving the Reynolds-Averaged Navier-Stokes equations. The geometry of the turbine blade section was NACA653-018 airfoil ...

    Uncertainty assessment for a towed underwater stereo PIV system by uniform flow measurement

    Freier Zugriff
    Bum Woo Han / Jeonghwa Seo / Seung Jae Lee et al. | DOAJ | 2018
    The present study aims to assess test uncertainty assessment method of nominal wake field measurement by a Stereoscopic Particle Image ...

    Towed underwater PIV measurement for free-surface effects on turbulent wake of a surface-piercing body

    Freier Zugriff
    Dong Myung Seol / Jeong Hwa Seo / Shin Hyung Rhee | DOAJ | 2013
    free-surface effects on the turbulent wake of a simple surface-piercing body. The selected test model was a cylindrical geometry formed by ...

    Preliminary tests of a damaged ship for CFD validation

    Freier Zugriff
    Sungkyun Lee / Ji-Myoung You / Hyun-Ho Lee et al. | DOAJ | 2012
    One of the most critical issues in naval architecture these days is the operational safety. Among many factors to be considered for higher ...

    Prediction of velocity and attitude of a yacht sailing upwind by computational fluid dynamics

    Freier Zugriff
    Heebum Lee / Mi Yeon Park / Sunho Park et al. | DOAJ | 2016
    One of the most important factors in sailing yacht design is accurate velocity prediction. Velocity prediction programs (VPP's) are widely ...

    Numerical optimization of Wells turbine for wave energy extraction

    Freier Zugriff
    Paresh Halder / Shin Hyung Rhee / Abdus Samad | DOAJ | 2017
    The present work focuses multi-objective optimization of blade sweep for a Wells turbine. The blade-sweep parameters at the mid and the tip ...

    Numerical and experimental investigation on the performance of three newly designed 100 kW-class tidal current turbines

    Freier Zugriff
    Museok Song / Moon-Chan Kim / In-Rok Do et al. | DOAJ | 2012
    Three types of 100 kW-class tidal stream turbines are proposed and their performance is studied both numerically and experimentally ...

    Model tests on resistance and seakeeping performance of wave-piercing high-speed vessel with spray rails

    Freier Zugriff
    Jeonghwa Seo / Hak-Kyu Choi / Uh-Cheul Jeong et al. | DOAJ | 2016
    The resistance and seakeeping performance of a high-speed monohull vessel were investigated through a series of model tests in a towing ...

    Maneuvering simulation of an X-plane submarine using computational fluid dynamics

    Freier Zugriff
    Yong Jae Cho / Woochan Seok / Ki-Hyeon Cheon et al. | DOAJ | 2020
    X-plane submarines show better maneuverability as they have much longer span of control plane than that of cross plane submarines. In this ...

    Investigation on the wall function implementation for the prediction of ship resistance

    Freier Zugriff
    Sunho Park / Se Wan Park / Shin Hyung Rhee et al. | DOAJ | 2013
    A computational fluid dynamics (CFD) code, dubbed SNUFOAM, was developed to predict the performance of ship resistance using a CFD tool kit ...

    Identification of 4-DoF maneuvering mathematical models for a combatant in intact and damaged conditions

    Freier Zugriff
    Myungjun Jeon / Hyeon Kyu Yoon / Jongyeol Park et al. | DOAJ | 2022
    This article introduces the process of identifying the dynamics models of a combatant in intact and damaged condition based on the measured ...
    Schlagwörter: 4-Degrees of Freedom

    Flexible CFD meshing strategy for prediction of ship resistance and propulsion performance

    Freier Zugriff
    Jeong Hwa Seo / Dong Myung Seol / Ju Hyun Lee et al. | DOAJ | 2010
    convenience of mesh generation, unstructured meshes were used in the bow and stern region of a ship, where the hull shape is formed of delicate curved ...

    Experimental study on the towing stability of a towed underwater object

    Freier Zugriff
    Jongyeol Park / Shin Hyung Rhee / Jong-Beom Im et al. | DOAJ | 2023
    The towing stability of a towed underwater object was investigated through towing tank model tests. Three types of towing cables were ...

    Experimental study on the propulsion performance of a partially submerged propeller

    Freier Zugriff
    Jeongsoo Ha / Jongyeol Park / Gyukpo Park et al. | DOAJ | 2023
    The present study concerns an open water performance of a partially submerged propeller. To investigate the free surface effects on the ...
    Schlagwörter: Loss of thrust and torque

    Experimental study on the effects of stern bulb arrangement on the slamming load

    Freier Zugriff
    Jongyeol Park / Ju Hyuck Choi / Hyun-ho Lee et al. | DOAJ | 2020
    The present study concerns the stern slamming load of container carriers, with stern bulb arrangement variation. First, a series of wedge ...

    Empirical mode decomposition based on Fourier transform and band-pass filter

    Freier Zugriff
    Zheng-Shou Chen / Shin Hyung Rhee / Gui-Lin Liu | DOAJ | 2019
    instantaneous vibration analyses, is developed in this study. Two key improvements are proposed. The first is associated with the adoption of a band ...

    Effect of waterjet intake plane shape on course-keeping stability of a planing boat

    Freier Zugriff
    Kyurin Park / Dong Jin Kim / Sun Young Kim et al. | DOAJ | 2021
    The course-keeping stability of a high speed planing boat should be considered at the design stage for its safe operations. The shape of ...