... the effect of wing position on the hydrodynamic characteristics of a UG by computational fluid dynamics (CFD) methodology. The results show that positioning the wing at the farthest point aft improves the performance of the glider but the increase is very small and visible at higher attack angle. Javaid...

... when the attack angle is ±8°. air transportation underwater glider wing flexibility lift-drag ratio passenger transportation attack angle deformation engineering hydrodynamic performance drag force variation flexible wing young glider hydrodynamic force lift force numerical study...

... relative to the rotating blade, Urel, could be described as the equation (Eq. 1). Urel = (UZ + UM ,Z )2 + (U r + UM , )2 (1) Thus, the inflow angle could be calculated. Meanwhile, the local twist angle t is known, the attack angle of a blade could be calculated by Eq. 2. t (2) Meanwhile, to avoid...

... force was a function of the gauge geometry and keel attack angle and value of the frontal berm height. Arnau and Ivanovic (2019) carried out 1g floor tests on cohesion-less seabed scour due to the ice attack. Ultimately, drifting velocity on the scouring loads was identified as an important parameter...

... section zhang air transportation glider pressure & density attack angle movable mass seagull glider deformation passenger transportation pressure hull wang path angle glide path angle Research of Sea-water Pressure and Density for the motion of underwater glider Xiaowei Ye, Junjuan...

... model tension coefficient experimental study attack angle biofuel textile surface membrane textile kelp farm model test model scale mooring system flexible membrane renewable energy dynamic response environmental load irregular wave test coefficient lift coefficient carriage...

... lift-drag ratio passenger transportation weight shift device vehicle obem measurement air transportation calculation characteristic engineering blended wing body surface effect underwater glider ocean floor resource exploration sea bottom observation point attack angle exploration...

...). sustainable development social responsibility renewable energy sustainability main shaft equation output efficiency assessment attack angle darrieus type cross-flow water turbine ocean energy environment load turbine cross-flow water turbine water turbine shaft cfwt device efficiency...

... control based on the genetic algorithm needs little prior knowledge, it is unable to realize real-time optimization because of its slow computing speed. critic function attack angle ziegler-nichol method dynamic positioning system reinforcement learning environmental direction time history...

... ABSTRACT When the ship shafts are very long, there always be a V-bracket located in fronted of the propeller to meet the strength requirement of screw shaft. While it will have a great influence on the flow field due to the different section shapes, attack angles and its locations. In order...

... field reservoir simulation boundary condition computation attack angle Computation and Measurement of Wake Field of Fin Installed in Boundary Layer Rikizo Yamashita1, Yasuyuki Toda2 1Hydrodynamics Group, Business & Technical Development Division, Sumitomo Heavy Industries Marine & Engineering Co...

... airfoil form drag coefficient riblet surface direct calculation shear stress distribution calculation shear stress upstream oil & gas attack angle flow field scalloped riblet riblet coefficient mesh drag reduction simulation three-dimensional riblet drag coefficient Drag...

.... self-propulsion condition duct resistance horizontal fin appendage verification esd propeller energy conservation procedure slipstream attack angle thrust resistance force rudder cfd computation marine transportation computation tank test flow field propeller model Development...

... explorations. prototype vehicle resource exploration lift coefficient coefficient steady flow vehicle observation point upstream oil & gas underwater glider pressure vessel autonomous obem measurement vehicle main wing passenger transportation obem attack angle exploration wing...

... equations and shear stress transport (SST) k-ω turbulence model are used to calculate the vortex field, while a fourthorder Runge-Kutta method is employed for evaluating the structure dynamics. The effect of the number of small rods, attack angle, diameter ratio and gap between the main and small...

... channel with its longitudinal profile parallel to flow, has attack angles and drift angles respectively. The experimental results will contribute to improving ROV hydrodynamic model and benefit for vehicle maneuverability and control system design. attack angle heave direction hydrodynamic...

... turning points of hydrodynamic behaviors of SHSC in semi-submerge mode. Sample analysis shows that SHSC with residual buoyancy of -1% ~ 9.8% Δ Sub is feasible to perform hydrodynamic diving and surfacing in condition of F B = 0.540. calculation attack angle tail wing hydrodynamic performance...

... as it can provide larger resistance in the z direction due to their larger attack angle than the vertical-strut one. However, there are two very interesting points: one is that the motion curves of inclined-strut section decay more slowly and stably than those of vertical-strut one, which are supposed...

... in vertical plane at different cruising speeds, different rotating speeds of pump rotor and different attack angles. After simulating, forces, torques and pressures on the vehicle's hull and waterjet components are obtained, including longitudinal forces, vertical forces, pitching moment, and thrust...

... of the tidal stream electricity generator can generate 19020 Wh for a year, 2.2W in average. attack angle production monitoring oshima national college tide cross section production control prototype tidal stream electricity generator renewable energy experiment flow rate water turbine...