Bioinspired Trailing Edge Serrations for Vertical Axis Wind Turbine Blades in Urban Environments: Performance Effects  

作　　者：Luis Santamaria Laura Suarez Fernandez Manuel Garcia-Diaz Jose Gonzalez Perez Monica Galdo 

机构地区：[1]Fluid Mechanics Area,Department of Energy,University of Oviedo,C/Wifredo Ricart s/n,Gijon,Asturias,33204,Spain

出　　处：《Journal of Bionic Engineering》2025年第2期822-837,共16页仿生工程学报(英文版)

摘　　要：Biomimetics has recently emerged as an interesting approach to enhance renewable energy technologies.In this work,bioinspired Trailing Edge Serrations(TES)were evaluated on a typical Vertical Axis Wind Turbine(VAWT)airfoil,the DU06-W200.As noise reduction benefits of these mechanisms are already well-established,this study focuses on their impact on airfoil and VAWT performance.A saw-tooth geometry was chosen based on VAWT specifications and existing research,followed by a detailed assessment through wind tunnel tests using a newly developed aerodynamic balance.For a broad spectrum of attack angles and Reynolds numbers,lift,drag,and pitching moments were carefully measured.The results show that TES enhance the lift-to-drag ratio,especially in stalled conditions,and postpone stall at negative angles,expanding the effective performance range.A notable increase in pitching moment also is also observed,relevant for blade-strut joint design.Additionally,the impact on turbine performance was estimated using an analytical model,demonstrating excellent accuracy when compared against previous experimental results.TES offer a modest 2%improve-ment in peak performance,though they slightly narrow the optimal tip-speed ratio zone.Despite this,the potential noise reduction and performance gains make TES a valuable addition to VAWT designs,especially in urban settings.

关 键 词：Biomimetics Trailing edge serrations Passive flow control device Vertical axis wind turbine VAWT Wind tunnel DU06-W200 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]