| 单支杆腹撑支架干扰测力及PIV试验研究 |
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| 引用本文： | 任凡凡,魏立辉,陶爱华,李雁鹏,杨磊,高娜,张彩成,蒋甲利,许相辉,王文达.单支杆腹撑支架干扰测力及PIV试验研究[J].实验流体力学,2022,36(6):36-46. |
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| 作者姓名： | 任凡凡 魏立辉 陶爱华 李雁鹏 杨磊 高娜 张彩成 蒋甲利 许相辉 王文达 |
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| 作者单位： | 航空工业空气动力研究院，哈尔滨 150000 |
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| 摘 要： | 针对FL–51低速风洞单支杆腹撑，为研究和优化其支架干扰特性，在风速为70和50 m/s时，开展了支杆预置角11°时（支杆与模型机身轴线的夹角为79°）的24棱、圆截面和截断翼型截面的三维支杆在飞机巡航与增升构型下的纵、横向两步法支架干扰试验。在预置角11°单支杆腹撑支架干扰特性研究基础上，进一步开展预置角为30°、60°（支杆与模型机身轴线的夹角分别为60°和30°）时24棱、圆截面和截断翼型截面支杆的支架干扰特性风洞试验研究。为进一步分析不同尺寸、截面形状的二维支杆绕流与尾流特性，开展了风洞PIV试验。研究结果表明:翼型支杆纵向支架干扰最优，但在横向恶化；随着最大厚度的增大，翼型支杆的尾涡具有较好的一致性，24棱和圆截面支杆的尾涡则随直径变化存在一定的变化；对于仅进行纵向试验或以纵向试验为重点的风洞试验，支杆宜选择翼型截面或适当截断的翼型截面。
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| 关 键 词： | 单支杆腹撑 支架干扰 截面形状 二维支杆 PIV |
| 收稿时间： | 2021-04-20 |
Experimental study on support interference of single support rod via force measurement and PIV |
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| Affiliation: | AVIC Aerodynamics Research Institute, Harbin 150000, China |
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| Abstract: | In order to study and optimize the support interference characteristics for the single support rod in the FL–51 low-speed wind tunnel, the longitudinal and transverse two-step support interference test of the aircraft in cruise and uplift configuration is carried out for the three-dimensional support rods with the cross section of 24 ribbed, round and truncated airfoil at the wind speed of 70, 50 m/s and the support rod pre-deflection angle of 11° （the angle between the support rod and the axis of the model fuselage is 79°）. Based on the study of the support interference characteristics of the single support rod at the pre-deflection angle of 11°, the support interference characteristics wind tunnel test of 24 ribbed, round and truncated airfoil support rods was carried out at the pre-deflection angle of 30° and 60° （the angle between the support rod and the axis of the model fuselage is 60° and 30° respectively）. For further analyzing the characteristics of two-dimensional support rod flow around and wake characteristics with different sizes and cross section shapes, the wind tunnel PIV test is carried out. The results show that the longitudinal support interference of the airfoil support rod is the best, but it deteriorates in the transverse direction.With the increase of the maximum thickness, the wake vortex of the airfoil support rod has good consistency, and the wake vortex of the 24 ribbed and round cross section support rod varies with diameter. For wind tunnel tests that only conduct longitudinal tests or focus on longitudinal tests, airfoil cross section or truncated airfoil should be selected. |
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