Influence of liquid water content on wind turbine blade icing by numerical simulation  

作　　者：LI Yan SUN Ce JIANG Yu YI Xian GUO Wenfeng WANG Shaolong FENG Fang 

机构地区：[1]Heilongjiang Provincial Key Laboratory of Technology and Equipment for Utilization of Agricultural Renewable Resources in Cold Region, Northeast Agricultural University, Harbin, Heilongjiang 150030, China [2]State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang, Sichuang 621000, China [3]College of Metallurgy & Energy, North China University of Science and Technology, Tangshan, Hebei 063009, China

出　　处：《排灌机械工程学报》2019年第6期513-520,共8页Journal of Drainage and Irrigation Machinery Engineering

基　　金：sponsored by the projects supported by the National Natural Science Foundation of China(NSFC,No.51576037 and 11172314);the National Key Basic Research Program of China (2015CB755800)

摘　　要：In order to research the influence of liquid water content ( LWC ) on blade icing of wind turbine, a numerical simulation method for blade icing was established. The numerical simulation was based on low speed viscous N-S equation. The trajectory equation of water droplets was established by Lagrangian method. The mass and energy conservation equations of the water droplets impacting on the surface of the blade were solved based on control body theory. Three sections along blade span wise of a 1.5 MW wind turbine were decided to simulate icing. Five kinds of LWC were selected for simulation including 0.2,0.4,0.6,0.8 and 1.0 g/m^3 under two ambient temperatures of -10 ℃ and -20 ℃. The medium volume droplet diameter ( MVD ) was 30μm. The simulations included icing shape on blade surface, dimensionless icing area and dimensionless maximum stagnation thickness. Furthermore, the flow fields around both the iced blade airfoil and the original one were simulated and analyzed. Accor-ding to the results, the typical icing characteristics of icing shape, icing area and thickness were greatly affected by the difference of LWCs. This study can provide theoretical reference for the research on antiicing and deicing of wind turbine blade.In order to research the influence of liquid water content(LWC) on blade icing of wind turbine,a numerical simulation method for blade icing was established.The numerical simulation was based on low speed viscous N-S equation.The trajectory equation of water droplets was established by Lagrangian method.The mass and energy conservation equations of the water droplets impacting on the surface of the blade were solved based on control body theory.Three sections along blade span wise of a1.5 MW wind turbine were decided to simulate icing.Five kinds of LWC were selected for simulation including 0.2,0.4,0.6,0.8 and 1.0 g/m3 under two ambient temperatures of-10 ℃ and-20 ℃.The medium volume droplet diameter(MVD) was 30 "m.The simulations included icing shape on blade surface,dimensionless icing area and dimensionless maximum stagnation thickness.Furthermore,the flow fields around both the iced blade airfoil and the original one were simulated and analyzed.According to the results,the typical icing characteristics of icing shape,icing area and thickness were greatly affected by the difference of LWCs.This study can provide theoretical reference for the research on antiicing and deicing of wind turbine blade.

关 键 词：WIND TURBINE ICING AIRFOIL NUMERICAL simulation liquid water CONTENT 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]