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RISمدلسازی فرآیند یک روش نوین پیشنهادی ساده به منظور کسب انرژی از امواج دریا
در این تحقیق مکانیزمی نوین برای کسب انرژی از امواج دریا ارائه گردیده است. این روش پیشنهادی شامل مکانیزم ساده ای می باشد که در آن مسیر حرکت شناور روی یک مسیر دایره ای شکل می باشد و شناورانرژی جنبشی خود را به صورت گشتاور به ...
Effect of acceleration on dynamic stall of airfoil in unsteady operating conditions
airfoil, the dynamic stall is evaluated. In contrast to ordinary pitching motion, the dynamic stall evaluation in this study is performed with a different motion pattern, in which the airfoil has a heaving motion in one ...
Proposed kinematic model for fish-like swimming with two pitch motions
In the present investigation a new kinematic model for a fish-like swimming is presented. In this model the foil has two rotational motions in order to approach of the fish swimming performance. This kinematic model is a ...
Fluid structures of flapping airfoil with elliptical motion trajectory
In the present study, the effect of elliptical motion trajectory on the aerodynamic characteristics and propulsive performance of a flapping airfoil is evaluated. A periodic horizontal motion (forward/backward) is combined ...
Simulation of power extraction from tidal currents by flapping foil hydrokinetic turbines in tandem formation
In the present study the power extraction possibility by a number of flapping hydrofoils in tandem
formation is investigated. A code is developed to predict power extraction capacity for the various
number ...
Enhancement of Propulsive Performance of Flapping Foil by Fish-Like Motion Pattern
In this study, the flapping foil propulsion with a novel motion pattern is numerically investigated. The proposed motion pattern is inspired from kinematics of fish species, such as marine mammals, utilizing a foil-shaped ...
The maximum energy extraction efficiency of an airfoil and its optimum operation conditions in aero/hydro kinetic energy converters
In this study, the energy extraction from flow streams by means of airfoil is investigated. The first step is consideration of ability of energy extraction with respect to kinematics parameters. The maximum energy extraction ...
Investigations on optimization of kinematics parameters of oscillating foil for energy extraction from tidal current flows
In present work, effect of different kinematics parameters on oscillating foil energy extraction is numerically investigated. It is noted that velocity of oscillating foil relative to free stream velocity (Tip Speed Ratio) ...
Optimizing the shape of rotor blades for maximum power extraction in marine current turbines
In this paper the shape of rotor blades in Marine Current Turbines (MCTs) are
investigated. The evaluation of hydrodynamic loads on blades is performed base on the
Blade Element Momentum (BEM) theory. According ...
Effect of caudal on hydrodynamic performance of flapping foil in fish-like swimming
In the present study the effect of caudal length on hydrodynamic performance of flapping foil is investigated.
According to reality of swimming of fishes, the kinematics of their oscillation tail is involved with ...