The efficiency of a gas turbine largely depends on the aerodynamics and pressure recovery capacity diffuser. For reliable numerical simulation flow in diffuser, model must be validated basis experimental data structure. An study stage diffuser system was carried out. results this investigation are as follows: area applicability method for assessing determined; recommendations preparing transfer...

This work presents an approach to the analysis of duct-augmented wind turbines using Computational Fluid Dynamics (CFD). The main objective is find optimum duct shape and design that gives maximum boost performance turbines. A surrounding rotor able increase power coefficient above Betz limit, so it has attracted great attention for many years. In this work, extensive augmented presented, consi...

In this study, we numerically investigated the effects of design parameters, such as strut geometry or diffusion angle, on performance an industrial turbine exhaust diffuser. Turbine diffusers are commonly used to change kinetic energy gases from outlet stages into static pressure. The diffuser in work consisted annular with five identical struts equally spaced around front circumference and a ...

In this paper considered the engineering analysis of a diffuser with closed-type wind power plant by converting kinetic energy oncoming into electrical energy. The study turbine was carried out in order to increase efficiency design is converted finite element model for aerodynamic calculations. investigated changing angle attack diffuser, various options its parameters find most optimal condit...

The modelling of tidal turbines and the hydrodynamic effects of tidal power extraction represents a relatively new challenge in the field of computational fluid dynamics. Many different methods of defining flow and boundary conditions have been postulated and examined to determine how accurately they replicate the many parameters associated with tidal power extraction. This paper outlines the r...

Diffuser augmented wind turbines (DAWTs) can increase mass flow through the rotor substantially, but have often failed to fulfill expectations. We address high-performance diffusers, and investigate the design requirements for a DAWT rotor to efficiently convert the available energy to shaft energy. Several factors can induce wake stall scenarios causing significant energy loss. The causality b...

Rapid decrease in the fossil fuels in the last couple of decades has stirred the researchers to find alternative sources for the production of power. Wind and tidal energies are the two most promising alternatives to the fossil fuels. While most of the recent research has been conducted on developing electro-mechanical systems for power production from wind energy, the research regarding the us...