摘要
为了研究气固两相对翼型表面层流分离及转捩的影响,首先基于Transition SST模型,对平板和S809翼型的转捩特性进行数值模拟,并将模拟结果与实验值进行对比分析,验证Transition SST模型模拟边界层转捩的优越性。然后在清洁空气和含不同粒径颗粒的气固两相流中,对风力机专用翼型DU93-W-212进行数值模拟,对比分析间歇因子和摩阻系数,结果表明:当颗粒直径小于150μm时,颗粒的加入使得翼型边界层层流分离和转捩均提前发生,且颗粒直径越小,提前位置越多;当颗粒直径大于等于150μm时,层流分离和转捩的位置几乎与清洁空气下一致。
In order to study the influence of gas-solid two phase on airfoil laminar separation and transition,the transition performance simulations of flat-plate and S809 airfoil were firstly performed with Transition SST model,and the simulation results were compared with the experimental results,verified the advantages of the Transition SST to simulate boundary layer transition.Then the simulation on the special airfoil of DU93-W-212 was performed under the conditions of clear air and gas-solid two phase flow with different size particles.According to comparing and analyzing the intermittency factor and the friction cofficient,it found when the particles diameter is smaller than 150μm,the airfoil laminar separation and transition are advanced due to the addition of particles,and the smaller the particle diameter,the more position in advance.When the particles diameter is bigger than or equal to150μm,the positions of airfoil laminar separation and transition are almost identical to that of clear air.
作者
李银然
郭兴铎
李德顺
赵煜
胡哲哲
Li Yinran;Guo Xingduo;Li Deshun;Zhao Yu;Hu Zhezhe(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Wind Energy Technology Research Center of Gansu Province,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Fluid Machinery and System,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2019年第9期2418-2423,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51566011
51766009)
国家重点基础研究发展(973)计划(2014CB04201)
关键词
翼型
两相流
层流流动
转捩流动
摩阻系数
间歇因子
airfoils
two phase flow
laminar flow
transition flow
friction cofficient
intermittency factor
