... of Seatrain in Calm Water Based on Small Water Plane Area Trimaran Yan Qin, Qing Wang, Chaobang Yao, *, Guohua Dong, Jianghao Huang Huazhong University of Science and Technology, Wuhan Second Ship Design and Research Institute, Wuhan, Hubei, People s Republic of China, Wuhan, Hubei, People s Republic of China...

... ABSTRACT Flow around a ship that advances at a constant speed in calm water of finite depth is considered within the usual framework of the Green-function and boundary-integral method associated with potential-flow theory. This method requires accurate and efficient evaluation of flows created...

... and evaluated the mechanism of free surface characteristics of a SUBOFF sailing near surface with different affecting the hydrodynamic performance of submarine. The study conditions of free surface (calm water and regular waves), using an indicated that the interaction between the bow and aft shoulder waves...

... Abstract Computational fluid dynamics (CFD) predictions of self–propulsion performance for a model–scale combatant ONR Tumblehome were conducted in calm water using an inhouse CFD code HUST–Ship integrated with the overset grid approach. Two different propulsion models, discretized propeller...

... are presented for free-fall lifeboat drops in calm water, which are compared to basin test experiments. A good agreement is achieved, indicating that the proposed simulation method is robust. Varying the skid pitch angle shows that pitch angles at water entry exceeding 70° results in lifeboat motions...

... 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...

... hull calm water sinkage overset mesh method savitsky resistance hydrodynamic performance fridsma fn 1 simulation equation pressure distribution rigid body motion method trim angle ABSTRACT Due to high speed and excellent hydrodynamics of the planing hull, crafts are applied...

... and describe ship motion, in calm water and regular waves, as experimented in free running maneuvering model tests (Rabliås & Kristiansen, 2019) and will compare the result of the model tests with simulations using the unified model; Fossen's vectorial unified model (2005). Fossen's model uses frequency...

... coefficient distribution and free surface profile of wedges with different deadrise angles into the calm water with constant velocity or free-falling are calculated. Furthermore, water entry of a wedge into a wave was studied. The accuracy of the code is verified by comparing with the published academic data...

... swis hull side wing monohull calm water characteristic resistance characteristic side wing ship resistance performance total resistance engineering swis Research on the resistance characteristics of a side wing ship Lixun Hou School of Naval Architecture and Ocean Engineering, Dalian...

... of the incident waves on the ship which is primarily due to wave diffractions. This component is the most significant in short waves, where the ship motion is nearly negligible. The third is damping forces associated with the forced heave and pitch motions in calm water, and insignificant compared to hydrodynamic...

... with this problem efficiently, experimental data is essential for CFD validation. Many researchers use both model test and numerical simulation to study the damaged ship stability. Santos et al. (2002) studied the transient asymmetric flooding of a Ro-Ro shaped barge in calm water using theoretical simulation...

... the numerical model describes the real physical problem combined with the EFD data. freight & logistics services simulation model test data mesh equation marine transportation procedure grid validation upstream oil & gas kc model container ship resistance modeling error calm water...

... body motion solver and dynamic overset grid. The ship heave and pitch motions were considered in wave and in calm water. The current result shows good agreement between simulation and experiment for the trend of the motion responses and added resistance. As wave length increases, heave and pitch motion...

... ABSTRACT In the past, traditional methods of research on ship maneuvering performance were estimated in calm waters. However, the course-keeping ability and the maneuvering performance of a ship can be influenced by the presence of waves. Therefore, it is necessary to understand...

... that in calm water, and is accelerated where the wave crest locates on the propeller plane. When the vertical motion at the stern goes upward, the wake velocity also accelerated. INTRODUCTION Predicting added resistances of a ship in waves (Raw) is essential to optimize the hull form, to predict speed...

... ABSTRACT In this paper, the speed loss is computed by the simulations of self-propulsion tests in calm water and in waves, and different approaches of the self-propulsion test are used. In addition to using the viscous flow RANS method, the potential flow methods are also applied...

... for evaluation of the energy saving ability of the duct. The measurements were carried out under the conditions of propeller load variation both in calm water and in waves. With the results of the experiments, the influence of the propeller load to the surface pressure of the duct was understood quantitatively...

... ABSTRACT In the present work, numerical simulations of standard zigzag maneuver in both calm water and waves are performed. The fully appended ONR Tumblehome model is applied for all the numerical calculations. In-house CFD solver naoe-FOAM-SJTU is used for the direct computations of free...

.... INTRODUCTION Now more than ever, reduction of ship pollution and emissions, maximization of energy efficiency, enhancement of safety requirements and minimization of operational expenditure have been required. Traditionally, ship resistance and propulsion performance in calm water has been concentrated...