... ABSTRACT This study investigates the resistance of underwater vehicles in serial and in parallel formation based on CFD simulations. The influence of hull spacing and the existence of propeller on resistance is analyzed. According to the simulation results, the formation mode of of underwater...

... marine transportation propeller propeller model cfd simulation coefficient simulation resistance propulsion model full-scale simulation china government equation asia government ship propeller thrust discretized propeller model self-propulsion simulation hull roughness pid...

... asia government propeller body force propeller model ship motion reservoir simulation body force model computation information upstream oil & gas china government ship self-propulsion ocean eng propeller result wang propeller model europe government actual propeller case...

... reservoir simulation propeller hub vortex deformation displacement rudder vortex structural response europe government contribution deflection fluid mech shaft frequency reservoir characterization frequency vibration fluctuation equation interaction di mascio slipstream...

... asia government thruster standard tunnel thrust coefficient bollard condition pressure distribution propeller tunnel thruster total thrust coefficient computational domain thruster-bank distance torque coefficient ring rotor china government coefficient hydrodynamic performance...

... neural network hull form regression model prediction result marine transportation prediction artificial intelligence coefficient model test prediction model deep learning machine learning power prediction test data open water characteristic ship propeller wake fraction section...

... ABSTRACT The objective of the present study is to investigate, by means of velocimetric measurements, the flow field generated by two marine propellers running with inclined shaft configuration. The two propellers represent two alternative designs for the same application, mostly differing...

... ABSTRACT The present paper analyses the vortical structures in the wake of a naval propeller operating underneath a free surface using detached-eddy simulation. We investigate the flow topology for several loading conditions and compare it with analogous observations behind a propeller...

... Rudder System. Model-scale open-water simulations of KP505 propeller at have been conducted for validation. The propeller open-water performance with the twin rudder considering different design angles and different lateral distances have been obtained. The comparison of the effects of conventional...

... ABSTRACT In this paper, vortex dipoles induced by the propeller in a linearly stratified ambient are investigated numerically. Vertical density stratification of the flow field is achieved by setting a temperature stratification and relating the density to temperature. The simulation...

.... In this paper, the nonlinear acoustic characteristics of the INSANA E779A propeller are studied for the non-cavitation conditions. The open source platform OpenFOAM is used to simulate the flow field and sound field. The DES model is adopted for the flow field coputation, and Ffowcs Williams and Hawkings (FW-H...

... & logistics services ferry total fuel consumption power allocation propeller allocation fuel consumption sustainability engine sustainable development prediction power ratio ship efficiency voyage double-ended ferry xgboost engine power operation westbound trip regression model eastbound...

... ABSTRACT This paper investigates the performance of unconventional tip rake propellers. The study discusses a decoupled design procedure of the tip rake from the conventional propeller. The raked tip is governed by a set of parameters which enables geometry around the tip to be controlled...

... ABSTRACT Super cavitating propellers design takes advantage of the formation of large cavities to increase flow velocity by reducing drag. Inter-blade flow of such a propeller is investigated experimentally via Laser Doppler Velocimetry and high-speed visualizations. Mean flow and fluctuations...

... ABSTRACT Based on the steady and unsteady numerical simulation methods, the aerodynamic performance of an air propeller applied on the air cushion vehicle with and without the duct, with and without the rear guide vans is analyzed respectively. The influence of duct and rear guide vans...

... ABSTRACT In this paper image-processing techniques for the study of cavitation types associated with erosion of marine propellers are presented. Blade root cavitation erosion was documented on three model-scale controllable pitch propellers using a combination of soft-paint techniques and high...

... engine power propeller calculation result ship net thrust wind speed united kingdom government social responsibility sustainable development wing sail mepc thrust matrix matrix model test coefficient sailing speed mathematical model Proceedings of the Thirty-third (2023) International...

... water and the self-propulsion performance of the WIG effect thruster are numerically simulated by a RANS solver. The results are then compared with those of a propeller behind the same ship. The self-propulsion factors, flow field details, and pulsating pressure is also discussed. The results show...

... ABSTRACT The cavitating flow and cavitation-induced noise are evaluated for a seven-blade highly skewed propeller behind the SUBOFF boat under different cavitation numbers by numerical and experimental approaches. The hybrid method of Reynolds-Averaged Navier-Stokes (RANS) solver and Ffowls...

... artificial intelligence machine learning electrical industrial apparatus simulation auv simulator axis propeller real vehicle ABSTRACT This paper proposes an approach to improve the performance of an autonomous underwater vehicle (AUV) simulator for inspection missions in the offshore...