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| 涡轮叶片前缘附近斜射流梯形腔内的流动特性 | |
| 引用本文： | 刘海涌,刘松龄,强洪夫,刘存良. 涡轮叶片前缘附近斜射流梯形腔内的流动特性[J]. 推进技术, 2011, 32(1): 113-118,124 |
| 作者姓名： | 刘海涌 刘松龄 强洪夫 刘存良 |
| 作者单位： | 1. 第二炮兵工程学院动力工程系,陕西,西安,710025;西北工业大学动力与能源学院,陕西,西安,710072 2. 西北工业大学动力与能源学院,陕西,西安,710072 3. 第二炮兵工程学院动力T程系,陕西,西安,710025 |
| 摘 要： | 涡轮叶片前缘附近内冷腔的几何结构通常较为复杂,建立了梯形内冷通道的放大模型进行实验模拟,考虑复杂流动条件的影响,了解通道内的流动结构与特性,为更高效的内冷通道设计提供参考。使用七孔针对通道流场进行了详细测量,研究射流、横流及气膜孔出流对通道流场的影响规律。结果表明:在射流侧壁面较低位置的射流对靶面的冲击效果良好,较高位置的射流则主要对通道内旋流起到诱导和促进作用,且后者更易受横流影响;通道内横流强度的增加会进一步促进逆时针方向旋流的发展,同时削弱射流的冲击效果;随着射流角度的增加,射流的冲击作用增强,但诱导旋流的能力减弱;气膜出流量和出流位置的改变对通道主体流动结构影响较小。 |
| 关 键 词： | 叶片前缘 梯形腔 旋流 横流 流动结构 七孔针 |
| 收稿时间： | 2009-10-13 |
| 修稿时间： | 2010-07-14 |
Flow structure measurement in a trapezoid duct with incline impingement jets near the leading edge |
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| LIU Hai-yong,LIU Song-ling,QIANG Hong-fu and LIU Cun-liang. Flow structure measurement in a trapezoid duct with incline impingement jets near the leading edge[J]. Journal of Propulsion Technology, 2011, 32(1): 113-118,124 | |
| Authors: | LIU Hai-yong LIU Song-ling QIANG Hong-fu LIU Cun-liang |
| Affiliation: | 1.Dept.of Power and Energy,The Second Artillery Engineering Coll.,Xian 710025,China; 2.School of Power and Energy,Northwestern Polytechnical Univ.,Xian 710072,China) |
| Abstract: | The internal cooling cavities always had complicated geometry near the leading edge.A simplified trapezoidal duct was built up for experimental research.The primary objective was to visualize the flow structure and flow characteristics in the duct with combined complicated flow conditions.It would provide useful information for the design of highly effective internal cooling system.Experimental measurements were performed using a seven-hole probe.The effect of impingement,cross flow and outflow were conside... |
| Keywords: | Leading edge Trapezoidal duct Swirl flow Cross flow Flow structure Seven-hole probe |
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