| 基于Gurney襟翼的低压涡轮叶栅流动控制实验 |
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| 引用本文： | 张军胜,乔渭阳,孙大伟.基于Gurney襟翼的低压涡轮叶栅流动控制实验[J].航空动力学报,2009,24(5):1129-1135. |
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| 作者姓名： | 张军胜 乔渭阳 孙大伟 |
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| 作者单位： | 西北工业大学 动力与能源学院, 西安 710072 |
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| 基金项目： | 国家自然科学基金(1037011) |
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| 摘 要： | 研究了在PAK-B低压涡轮叶片压力面尾缘加装不同Gurney襟翼在不同流动状态下对流动的控制影响.结果表明,Gurney襟翼能够有效减小PAK-B叶型失速流动状态下的损失.在进口Re=23 000,Ma=0.021,FSTI=1%状态下,加装高度为1%弦长的圆形襟翼后总压损失系数减小29%左右,气流转折角增大3.12%左右,同时影响使主流流量减少5%左右;该襟翼使吸力面边界层分离及重附的位置延后,使尾迹区减小,从而减少流动损失.
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| 关 键 词： | Gurney襟翼 边界层分离 总压损失系数 低压涡轮 |
| 收稿时间： | 5/8/2008 11:26:55 AM |
| 修稿时间： | 2008/7/11 0:00:00 |
Experiment on flow control using Gurney-flaps for a low-pressure turbine cascade |
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| ZHANG Jun-sheng,QIAO Wei-yang and SUN Da-wei.Experiment on flow control using Gurney-flaps for a low-pressure turbine cascade[J].Journal of Aerospace Power,2009,24(5):1129-1135. |
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| Authors: | ZHANG Jun-sheng QIAO Wei-yang and SUN Da-wei |
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| Institution: | School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | An experiment was conducted to study the flow control effects of the Gurney-flaps which were fixed on the trailing edge of the pressure surface of PAK-B low-pressure turbine blade.The experiment adopted different shapes of Gurney-flaps with different heights under various flow conditions.The experimental results show that Gurney-flaps can effectively reduce flow loss when PAK-B profile is stall.At Re=23 000,Ma=0.021,FSTI=1%,the loss coefficient of total pressure is reduced by about 29% and the flow turning ... |
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| Keywords: | Gurney-flap boundary layer separation loss coefficient of total pressure low-pressure turbine |
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