Download or read book Measurement and Analysis of the Wake of a DAF 500 kw Vertical Axis Wind Turbine written by David S. Renne and published by . This book was released on 1985 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Testing and Evaluation of a 500 kW Vertical axis Wind Turbine written by M. C. Wehrey and published by . This book was released on 1985 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vertical Axis Wind Turbine Wake Velocity Measurements and Comparison with Analysis written by Huanming Sun and published by . This book was released on 1981 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development Testing and Commercialization of DAF Indal s Series 6400 500 KW Vertical Axis Wind Turbine written by Vincent P. Lacey and published by . This book was released on 198? with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ninth ASME Wind Energy Symposium written by Dale E. Berg and published by . This book was released on 1990 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASME Wind Energy Symposium written by and published by . This book was released on 1990 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Performance and Economics of the DAF Indal 50 KW and 375 KW Vertical Axis Wind Turbine written by Lawrence A. Schienbein and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forced Response Analysis of Vertical Axis Wind Turbines written by DAF Indal Limited and published by . This book was released on 1983 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Near wake Flow Dynamics of a Horizontal Axis Wind Turbine written by Pooyan Hashemi Tari and published by . This book was released on 2012 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments have been conducted in a large wind tunnel set-up in order to study the flow structures within the near-wake region of a horizontal axis wind turbine. Particle Image Velocimetry (PIV) has been employed to quantify the mean and turbulent components of the flow field. The measurements have been performed in multiple adjacent horizontal planes in order to cover the area behind the rotor in a large radial interval, at several locations downstream of the rotor. The measurements were phase-locked in order to facilitate the re-construction of the three-dimensional flow field. Acquiring uniform particle distribution in the measurement planes as well as proper calibration for the process of patching the adjacent measurement planes were the major issues influencing the PIV measurements. The results demonstrate the successful implementation of the PIV technique and the associated post-processing to accurately construct the flow field in the near-wake of a HAWT in a large wind tunnel setup. The mean velocity and turbulence characteristics clearly correlate with the near-wake vortex dynamics and in particular with the helical structure of the flow, formed shortly behind the turbine rotor. The radial velocity is low at the mid section of the blade and increases towards the tip. Close to the rotor and close to the blade tip and root regions the mean and turbulent characteristics of the flow are highly dependent on the azimuth angle of blade due to the tip and root vortices. Further from the rotor, the characteristics of the flow become phase independent. This can be attributed to the breakdown of the vortical structure of the flow, resulting from the turbulent diffusion. In general, the highest levels of turbulence are observed in shear layer around the tip of the blades, which decrease rapidly downstream. The shear zone grows in the radial direction as the iv wake moves axially, resulting in velocity recovery toward the centre of the rotor due to momentum transport. These findings are important in wind farm studies, where it is essential to determine the region of influence of the wake of each wind turbine, to study the interaction of wind turbines in the farm. The findings are also significant, as they point out that in the far wake region, the turbulent characteristics are independent of azimuth angle of the blade, which suggests the possibility of generating simple and robust wind turbine wake models for wind farm analysis. In addition to quantification of mean and turbulent velocity field, the capability and limitation of the Blade Element Momentum (BEM) method in predicting axial velocity profiles at the location of the rotor disc has been assessed. For this purpose, the profiles obtained from PIV measurements have been compared with those acquired from the classical BEM method, as well as with the improved method which involves series of corrections, including tip loss, stall delay and thrust coefficient corrections. In general, the comparison shows good qualitative agreement between velocity profiles obtained from PIV measurements and those obtained by BEM method, when the corrections are applied. Moreover, the PIV results have also been compared with the results obtained from the velocity measurements performed by previous investigators in small wind tunnel set-ups, in order to assess the scaling effects, and in particular the effect of local chord Reynolds number. The tip speed ratio is considered to be similar for all measurement to satisfy the kinematic similarity requirement. The comparison shows that the axial velocity profiles are highly dependent on Reynolds number. This is an important finding in terms of simulating scaled models of wind turbines and wind farms in wind tunnel settings.
Download or read book Solar Energy Update written by and published by . This book was released on 1984 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of the Wake Behind a Full Scale Vertical axis Wind Turbine written by P. E. J. Vermeulen and published by . This book was released on 1979 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Data Report written by A. M Talmon and published by . This book was released on 1985 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance and wake measurements on a 3 M diameter horizontal axis wind turbine written by M. B. Anderson and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance Testing and Verification of the DAF Indal 50 KW Vertical Axis Wind Turbine written by Lawrence A. Schienbein and published by . This book was released on 1980 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Prescribed Wake Model for Vertical Axis Wind Turbines written by Bambang Basuno and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Engineering written by and published by . This book was released on 1985 with total page 1506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
