The wake structure in a 2D grid installation of the horizontal axis micro wind turbines

M.Z. Hossain, H. Hirahara, Y. Nonomura and M. Kawahashi

Renewable Energy, 2007, vol. 32, issue 13, 2247-2267

Abstract: In order to develop applications for micro-wind turbines, an experimental analysis of the flow field around integrated micro-wind turbines was performed. The wake flows of a single turbine and 5×5 array unit were measured by using hot-wire and ultrasonic anemometers and particle image velocimetry (PIV). The present array of turbines follows a fundamental lattice layout; however, it has the flexibility to optimize its layout according to the environmental conditions. hot-wire and ultrasonic anemometers and PIV measurements were used for stand-alone turbines and their integrated systems. Comparisons between the mean velocity field and turbulent intensity were described for stand-alone full-scale and 1/10-scale wind turbine models. Thereafter, a typical array of the 1/10-scale model was assumed and its wake flow was investigated in a wind tunnel. The velocity profile and turbulence behind the array were measured and studied at different streamwise locations. The scale effect and model similarities were discussed. The experimental results show that a zone exists with constant and linear wake deficit ratios in the downstream regions.

Keywords: Micro-wind turbine; Hot-wire anemometer; Ultrasonic anemometer; Particle image velocimetry; Integrated wind turbines; Wake (search for similar items in EconPapers)
Date: 2007
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:32:y:2007:i:13:p:2247-2267

DOI: 10.1016/j.renene.2006.11.016

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