A new class of diffuser augmented wind turbines (DAWTs) is presented. The new diffuser concept exploits aero … potentials which exceed the power efficiency based on the diffuser exit area by 50%. The paper presents the 1D momentum theory …-Axis Wind Turbines (HAWTs). Inviscid axisymmetric panel code calculations are then used to drive the diffuser design towards …

To clarify the behavior of the blade tip vortices of a wind turbine equipped with a brimmed-diffuser shroud, called a … unique wind turbine consists of not only rotating blades but also a diffuser shroud with a broad-ring brim at the exit … the blade tip and the inner surface of the diffuser. Since these vortices interacted with each other, the blade tip vortex …

We have developed a new wind turbine system that consists of a diffuser shroud with a broad-ring brim at the exit … periphery and a wind turbine inside it. The shrouded wind turbine with a brimmed diffuser has demonstrated power augmentation by … inside the diffuser shroud. …

Wind tunnel experiments were conducted to investigate the influence of the flanged diffuser on the dynamic behavior of … the blade of a 3 kW wind turbine shrouded with a flanged diffuser. The blade was fabricated by the skin of carbon fiber … different yawing angles (0-degree to 30-degree) to investigate the effects of the interactions of the flanged diffuser and the …

Flanged diffuser shrouding small wind turbine, is among the most tested devices for increasing wind energy. The height … of the flange is between the geometric futures of the diffuser that contributes efficiently in improving diffuser … area of the diffuser, two contra-rotating vortices were created at this location. These two vortices move away from each …

conical diffuser with high pressure recovery performance is a good choice for the supersonic separator. The shock waves appear … diffuser. When the swirling flow goes into the diffuser, the strength of the swirl changes the shock positions and the static …

An experimental study was carried out to develop a new type of two-way diffuser suitable for a fluid flow energy … it is dramatically increased by the use of a diffuser with a brim around the turbine. In this study, a new type of two …-way diffuser suitable for a flow periodically changing its direction, such as a tidal current, was developed, applying the system …

variable pitch straight blades, fixed helical blades, with and without a slatted diffuser, by mounting each turbine in front of … a barge and motoring through still water at speeds ranging from less than 1 m/s up to 5 m/s. The diffuser increased the …. The maximum coefficient of performance Cp of the fixed pitch straight blade and helical turbines without a diffuser ranged …

source region, a strategy that is first validated against Betz theory. The diffuser configuration produces 3.1 times more … power than the turbine with no diffuser. A scaling analysis also shows a turbine with a diffuser outperforms a larger size … turbine with no diffuser. …

of a rectangular storage tank. Special interest is focused on the diffuser configuration, which crucially impacts the … performance of a storage tank. Herein, a new diffuser shape is proposed, which exemplifies improved performance. Three … ratio of the diffuser to tank cross-section=0.0327, 0.0582, and 0.131) and one design parameter having two levels (i …