... air propeller rear guide van fluctuation characteristic asia government reservoir simulation propeller aerodynamic load fluctuation propulsion efficiency inlet flow velocity canada government characteristic load fluctuation characteristic china government ducted air propeller...

... dynamics (CFD) techniques has been adopted to simulate the dual flapping foils in a tunnel; the thrust, propulsive efficiency at various flapping frequency have been investigated. The mean thrust of the dual foils has not changed significantly, while the efficiency decreases slightly, due to the tunnel...

... and the flow non-uniformity & perpendicularity at duct outlet on the propulsion efficiency of the waterjet in this paper are proposed respectively. INTRODUCTION The inlet duct of the waterjet is an important hydraulic component connecting the hull and the pump. The water sucked by the propulsion...

... methods, from advantages and disadvantages, power range, to technical issues, and analyzes the applicable ships and propulsion efficiencies for each type of propulsion method. Although shaftless rim propulsion and pod propulsion have various key technical challenges, their propulsion efficiencies...

..., on the hydrodynamic performance is analyzed. The total length of the plate is selected to be 0.3m. The average thrust coefficients and propulsive efficiency as well as the pressure contours varying with different parameters are given to describe the results. The results show that, when the wave length is 1.6∼1.8...

... shape optimization to improve the wake field uniformity. INTRODUCTION Twin-skeg type ship is widely used on ro-ro ships with restricted draft and highly loaded propellers due to the obvious advantage of propulsion efficiency (Kim K et al. 2014). However, it is difficult to design the stern shape...

... good performance in aligning with experiment data from the tank, which testified that CFD method can be used for prediction of the fluctuating pressure induced by propeller. cruise ship propulsion efficiency university podded propeller vibration ship hull characteristic prediction marine...

... power and propulsion efficiency are calculated when the constraining force is equal to zero. The shaft power Pm is calculated according to Eq.1 and the propulsion efficiency is calculated according to Eq.2. In the equations, N represents the revolution speed of propellers and v is the speed of ship...

.... Numerical results indicate that PBCF can obtain a net propulsion efficiency improvement of 2% in the model scale. The augmentation of the propeller efficiency by full scale model is significantly twice as much as that of the model scale. INTRODUCTION In recent years, the International Maritime...

... propulsion efficiency energy conservation free surface time history time history ship fawpd artificial intelligence sustainability passive hydrofoil submergence ocean energy Experimental studies on hydrodynamics of a floater-adjusted wave propulsion device Hongbin Hao1, Qingwei Ma2,1, Kangping...

... pressure on the tail fluke will be transfer from the chordwise and thickness direction to the spanwise direction, which may increase the stiffness in the spanwise direction and ensure low deflection in the spanwise direction. This may be helpful for propulsion efficiency of tail fin. CONCLUSIONS...

... to calculate the efficiency of the WTW. During the process, we also obtain the blade swing angle with the highest propulsion efficiency by theoretical calculation. On the basis, a 2D CFD model is used to calculate the WTW hydrodynamic performance in several typical working conditions. In addition, we compared...

... geometry self-propulsion point interaction total resistance artificial intelligence simulation propeller pressure distribution propulsion performance rudder propeller design pitch distribution reference propeller geometry resistance propulsion efficiency machine learning optimization...