... ships. software engineering operational requirement guidance shipborne system north america government system requirement ship-equipment suitability requirement constraint ship hull environmental condition system function architecture united states government operational activity...

...) method, coupled with k-omega turbulence model are adopted to capture the free surface effect. Series studies are conducted to obtain the hydrodynamic force tendency, constraint streamlines on ship hull, and the developed vorticity around ship hull, under full drifting conditions (0-180°drift angles...

...) used in the inner domain and free surface Green's function method used in the outer domain, which satisfies the far-field radiation boundary condition automatically and adds nonlinear items on free surface and ship hull boundary condition flexibly to improve the accuracy and stability of calculation...

... deep learning machine learning mode recognition eigenvalue neural network vibration mode accuracy natural frequency recognition loss function mode analysis artificial intelligence ship hull configuration convolutional 512 fem model vgg model grillage vgg-11 classification...

... ABSTRACT The problem for interactional flows between the ship hull and the propeller is studied by computational fluid dynamics (CFD) simulators with the RANS-based computational model. In this paper, we mainly emphasize the modelling of the propeller, by introduction of a multiple reference...

... freight & logistics services ship control surface application marine transportation resistance experiment data hydrodynamic analysis order force wigley-iii pitch motion field method multi-domain method calculation ship hull incident wave boundary condition ocean engineering...

...Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022 Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1-880653-81-4; ISSN 1098-6189 www.isope.org Ship Hull Offset Feature...

... used in the outer domain, which satisfies the far-field radiation boundary condition automatically and adopts nonlinear items on free surface and ship hull boundary condition flexibly to improve the accuracy and stability of calculation. Zhang, Lin and Weems (1998) applied the multi-domain method...

... Abstract Prediction of hydrodynamic forces acting on a ship hull is important to predict ship manoeuvrability precisely. In this paper, SQCM (Source and Quasi Continuous vortex lattice Method) is introduced to predict lateral force and yawing moment acting on a ship hull representing the shape...

... drilling equipment water motion resistance ship hull resistance fft analysis upstream oil & gas cfd simulation time history hull resistance speed 0 piston mode simulation ship hull water agitation resonance frequency drillship moonpool calm water encounter period 1...

... International Towing Tank Conference clearly pointed out that computational accuracy of CFD is sufficient in satisfying engineering requirement. Yin (2015) predicted the fluctuating pressure on ship hull with a hull-propeller numerical model basing on bidirectional coupling and compared the computational...

... interaction, were calculated separately and summed as the total ice forces. Su, Riska and Moan (2011) introduced a numerical model to investigate both global and local ice loads on the ship hull. This model was partly based on empirical data. The interdependence between ice loads and ship motions...

... are widely used in engineering practice, but the calculation is based on the assumption that the motion of ship hull is steady, so nonlinear effect cannot be considered. So three dimension time domain method is an important direction for research. Many scholars have studied 3D time domain methods. Among all...

.... The classical approach to determine ship motions and wave loads is based on the assumption that the ship hull acts as a rigid body. However, the approach is not reliable enough for ultra large ships due to interaction between the wave load and structure response. Bishop and Price (1979) establish...

... number and three main parameters that characterize the ship hull shape is given. This relation is obtained via a parametric nu- merical analysis, based on the classical Hogner potential flow model, for a wide range of Froude numbers and thirty hull forms associated with a broad range of nondimensional...

... vessels, the ship hull is always regarded as a thin walled cavity. Effected by the wave pressure, temperature, stormy waves, streams, the intrinsic materials properties, it easily causes dynamic response of the ship such as heaving, pitching, rolling, heeling. As a result, the hull could be deformed...

... of wavelength and wave direction on the forces and moments acting on the ship hull was discussed. The force and yawing moment acting on the rudder behind KCS model versus rudder angle in various wave directions were investigated in detail. setup wave direction tank calm water rudder maneuverability...

.... 1 Hydrodynamic Geometry Model THE FOUNDATION OF NUMERICAL CALCULATION THEORY The Foundation of Three Dimensional Potential Flow Theory In the study of the interaction between waves and ship hulls, fluid media are generally considered as ideal fluids with uniform, incompressible and inviscid...

... ABSTRACT This work investigates the feasibility of the numerical methods for analyzing the ultimate strength of a ship hull. Taking into account the effects of geometric and material nonlinear factors, the similarity criterion of the ultimate strength of the ship hull is derived...

... ABSTRACT A 3-D model for hydrodynamic performance and Stokes waves propagation on the free surface is established using the Navier-Stokes equations and Stokes wave theory. The realizable k – ε turbulence model has been implemented to capture turbulent flow around the ship hull. The tracking...