| 后部加载叶型直叶片和弯叶片叶栅中能量损失变化的实验研究 |
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| 引用本文： | 周逊,韩万金,吕智强.后部加载叶型直叶片和弯叶片叶栅中能量损失变化的实验研究[J].航空动力学报,2004,19(1):118-125. |
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| 作者姓名： | 周逊 韩万金 吕智强 |
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| 作者单位： | 1. 哈尔滨工业大学,能源科学与工程学院,黑龙江,哈尔滨,150001
2. 哈尔滨汽轮机厂有限责任公司,黑龙江,哈尔滨,150046 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(G1999022307)，国家教委博士点基金资助项目(EDAF-24403003HB-0241) |
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| 摘 要： | 在环形叶栅低速风洞上,详细测量了具有后部加载叶型的常规直叶片和弯扭叶片栅能量损失由栅前至栅后的发展。实验结果表明损失的增长主要发生在前缘和尾缘附近,提高此类叶栅流动效率的关键是前缘圆直径、尾缘逆压段长度与逆压梯度值的匹配以及沿叶高静压系数分布规律的选择。
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| 关 键 词： | 航空、航天推进系统 涡轮 后部加载叶型 弯叶片 实验研究 |
| 文章编号： | 1000-8055(2004)01-0118-08 |
| 收稿时间： | 2003/3/24 0:00:00 |
| 修稿时间： | 2003年3月24日 |
Experimental Investigation of Energy Loss in Straight and Bowed cascades with Aft-Loaded Profiles |
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| ZHOU Xun,HAN Wan-jin and LU Zhi-qiang.Experimental Investigation of Energy Loss in Straight and Bowed cascades with Aft-Loaded Profiles[J].Journal of Aerospace Power,2004,19(1):118-125. |
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| Authors: | ZHOU Xun HAN Wan-jin and LU Zhi-qiang |
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| Institution: | ZHOU Xun~1,HAN Wan-jin~1,LU Zhi-qiang~2 |
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| Abstract: | The experimental investigation was conducted in a low speed annular wind tunnel.The energy loss evolution from the upstream to the downstream in the blade cascade channel with aft-loaded profiles was measured in detail.The results of the present study showed that energy loss occurs mainly in the places near the leading and the trailing edges.Therefore,the measures to be taken are to choose the leading edge diameter,to match the portion of adverse pressure gradient zone with its value and to improve the static pressure distribution along span height. |
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| Keywords: | aerospace propulsion system turbine aft-loaded profile curved blade experimental investigation |
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