... around a Twin-rotor Tidal Stream Turbine Yudi Zhou, Guohui Wang, Xiangfeng Lin, Jisheng Zhang* College of Harbor, Coastal and Offshore Engineering, Hohai University Nanjing, Jiangsu, China ABSTRACT existence of waves is beneficial to the speed recovery of the water flow behind the supporting structure...

.... An impact type crusher design has been chosen, to investigate the breakage characteristics of the materials. In this paper the impact crusher is investigated by using Discrete Element Method (DEM) by varying the speed of rotor and distance between the fixed tines which controls the particle size...

.... Fruitful results are achieved and some preliminary observations are presented. NOMENCLATURE CMS - Condition Monitoring System DOF - Degree of Freedom ESS - Environment Simulation System FBG - Fiber Bragg Grating FORJ - Fiber Optical Rotary Joint FSR - Froude-Scale Rotor FWT - Floating Wind Turbine...

... is the distance between the front and rear rotators and D is diameter of rotor), counter-rotating HATT showed best power performance among the 3 tested L. INTRODUCTION The depletion of fossil energy and the environmental pollution problem motivate the pursuit of new environment-friendly alternative energy...

... simulation information fpso experiment surge motion similarity criteria model offshore wake interaction numerical investigation rotor floating production system wind turbine Numerical Investigation on the Aerodynamic Performance of a Scaled Model Offshore Floating Wind Turbine Under Surge...

... superior propulsion performance and low noise performance. The PJP is composed of rotors, stators and a duct which covers the rotor and the stator. The rotor can produce the required thrust by interacting with the inflow as similar to the propeller blades. The stator is a set of blades with a certain angle...

... ABSTRACT The hydrodynamic performance of the wave energy converter (WEC)-rotor is studied based on nonlinear computational fluid dynamics (CFD) using the Reynolds-Averaged Navier-Stokes equation in STAR-CCM+. The concept of WEC-rotor mechanism is similar to the Salter's duck. Wave-WEC...

... source term coefficient upstream turbine drag coefficient turbine actuator line method downstream turbine social responsibility reservoir simulation ocean energy rotor tidal turbine sustainable development geometry method geometry simulation thrust coefficient experimental result...

... the differences between the models, focusing on the effect on the total fatigue experimented by the rotor on a reduced load matrix. A monopile for a 13.2 MW rotor was designed in the stiff-soft region and fully aeroservo-elastic simulations were run using the aero-servo-hydro-elastic tool 3DFloat. Results show...

... to introduce some corrections to get higher accurate results, such as dynamic stall, tip loss, added mass of rotors, et al. However, CFD method is very expansive for CPU time and can get highly accuracate results without these corrections. Even so, many researches concentrated on wind turbine wake simulation...

... ABSTRACT This paper presents the performance assessment of pitch-type wave energy converter (WEC) rotor due to nonlinear viscous damping obtained from the free decay tests conducted in computation fluid dynamics (CFD). The nonlinear damping moment is obtained by energy method (Bass and Haddara...

... hybrid approach simulation panel method accuracy body force field effective wake field plane propeller pump-jet propulsor force field numerical prediction geometry interpolation scheme surface panel method rotor prediction ABSTRACT The effective wake field of the fully...

... ABSTRACT Under the Froude-scale model test environment with the scale of 1/54 th , the strong Reynolds scale effects obstructs the model rotor capturing enough thrust. One effective solution is redesigning a performance matched blade to replace geometry similar blade. In this paper...

... surveillance resistance weather condition turbulent boundary layer hull bulk carrier production control indicator propeller performance reduction in-service performance evaluation rotor coating frictional drag production monitoring In-Service Performance Evaluation of Low Frictional AF Marine...

... efficiency, unlike other turbines, is not yet well optimized. rotor curvature numerical analysis valve shaft arc curvature diameter numerical simulation turbine efficiency design parameter artificial intelligence equation geometric parameter cross-flow turbine nozzle upstream oil...

... computational fluid dynamics solver STAR-CCM+ is used to perform the simulations. The turbulence model of improved delayed detached eddy simulation is employed. The results show that the pitch motion can increase the power output of the rotor, and lead to the stronger blade-wake interaction. In addition...

... Abstract Computations of the blade loading and the local flow field around the Model Rotor Experiments In Controlled Conditions (MEXICO) rotor are presented using an actuator line method, implemented within the open source code OpenFOAM. The nacelle and near wake mesh refinement are shown...

... on the aerodynamic forces and moments of the rotor than the surge motion does. And the motion of the platform especially the pitch motion may bring very bad influence on the turbine forces and wake flow, even on the power generation in case of very severe pitch motion. Introduction As renewable and sustainable...

... are installed forming the so called wind parks. As a consequence, in some cases depending on the park topology and the wind direction, the wind turbine operates in the wake shed by a presiding rotor. This complication creates additional uncertainties and imposes new challenges to aero-elastic tools with respect...

... little attention has been deserved to its structural behavior, including the analysis of the maximum transversal displacements of the rotors of the pump, which must be extremely small since the peripheral gaps between the rotor and the liner have the order of magnitude of 0.1 mm and any kind of contact...