STUDY ON UPSCALING OF CROSS-FLOW WIND TURBINE WITH TWO FLOW DEFLECTORS AS WIND COLLECTOR

抄録

Our study aims to improve the performance of cross-flow wind turbine by using two flow deflectors as wind collector that improve the ambient wind environment of the wind turbine. In this study, influence of upscaling of cross-flow wind turbine with two flow deflectors was investigated, namely three types of the wind turbine models were examined, one was the base model with 114 mm swept diameter and 12 blades and the other two were upscaled 1.5 times in swept diameter. Each upscaled model has different blade airfoil size and the number of blades. One upscaled model had similar figure to the base model and the other had 19 blades the airfoil size of which was same as that of base model. For these three types of wind turbine models with and without two flow deflectors, the experimental performance test and 2D numerical flow analysis were carried out and the influence of upscaling of cross-flow wind turbine with two flow deflectors were considered. As a result, with two flow deflectors, the upscaled wind turbine with smaller blade airfoil than flow deflectors showed higher performance than the other the blade airfoils of which have same size as flow deflectors.