基于前缘缝翼微型后缘装置的多段翼型被动流动控制
收稿日期: 2016-07-27
修回日期: 2017-01-19
网络出版日期: 2017-02-13
基金资助
国家自然科学基金（11072200）；中欧国际合作项目MARS
Passive flow control of multi-element airfoils using slat mini-trailing edge device
Received date: 2016-07-27
Revised date: 2017-01-19
Online published: 2017-02-13
Supported by
National Natural Science Foundation of China (11072200);MARS Project Co-Funded by European Union and Chinese MIIT
以麦道航空公司的三段增升构型为研究模型，采用剪切应力输运（SST）k-ω湍流模型在C-H型多块结构网格上求解二维非定常雷诺平均Navier-Stokes方程，研究了前缘缝翼微型后缘装置（MTED）在多段翼型被动流动控制中的应用。由于MTED改变了实际的缝翼缝道参数，因此首先研究了作为主要改变量的缝道宽度对该三段翼型气动性能的影响，当缝道宽度从参考构型的2.95%c增加至3.98%c时，最大总升力系数约减小4.61%。当在不同缝道宽度基本构型上增加相同MTED时，计算结果表明它对各个翼段的影响定性一致，即前缘缝翼升力增加、主翼升力减小以及后缘襟翼升力基本不变化。这些升力变化的综合作用是：MTED构型线性段总升力系数的变化不大，失速段的变化取决于缝道宽度，当缝道宽度为3.98%c时，高度为0.50%c的MTED构型的最大总升力系数约增加6.98%。
关键词： 多段翼型; 被动流动控制; 前缘缝翼; 微型后缘装置(MTED); 缝道宽度
张振辉 , 李栋 , 杨茵 . 基于前缘缝翼微型后缘装置的多段翼型被动流动控制[J]. 航空学报, 2017 , 38(5) : 120650 -120650 . DOI: 10.7527/S1000-6893.2017.120650
Based on the McDonnell Douglas Aerospace three-element high lift configuration, two-dimensional unsteady Reynolds averaged Navier-Stokes equations together with shear stress transport (SST) k-ω turbulence model are employed on the multi-block structured grid of C-H type to investigate application of slat mini-trailing edge device (MTED) to passive flow control of multi-element airfoils. Considering that the actual slat slot parameters would be changed due to addition of slat MTED, effects of the slat gap, as the primary parametric variation, on the aerodynamic characteristics of the studied three-element airfoil are investigated. The results show that the maximum total lift coefficient is reduced by about 4.61% when the slat gap increases from 2.95%c to 3.98%c. The same slat MTED presents qualitatively consistent impacts on individual elements of these basic configurations with different slat gaps, namely increasing slat lift, decreasing main-element lift and almost negligible effects on flap lift. The combination of these lift changes leads to very slight change in the linear region of the total lift coefficient, but more significant variation depending on the slat gap in the stall region. When the slat gap is 3.98%c, the maximum total lift coefficient increases by about 6.98% for the configuration with the slat MTED height being 0.50%c.
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