| 大转角反弯叶栅气膜冷却实验研究 |
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| 引用本文： | 陈浮,杨科,宋彦萍,王仲奇.大转角反弯叶栅气膜冷却实验研究[J].航空动力学报,2004,19(2):219-223. |
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| 作者姓名： | 陈浮 杨科 宋彦萍 王仲奇 |
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| 作者单位： | 哈尔滨工业大学,能源科学与工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家科技部973资助项目(G1999022307);黑龙江省自然科学基金资助项目(E0204);哈尔滨工业大学校基金资助项目(HIT·2002·44) |
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| 摘 要： | 对大转折角气冷涡轮直、反弯叶栅出口流场进行了不同位置10排孔喷气及多排孔喷气等26套冷却方案测量.结果表明,无冷气喷射时反弯叶栅内损失高于直叶栅;压力面、吸力面近尾缘处喷气可降低叶栅损失;反弯叶栅前部多排孔气膜冷却的损失增加值要低于直叶栅,后部多排孔喷气则可降低叶栅损失.
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| 关 键 词： | 航空、航天推进系统 气膜冷却 大转折角 反弯叶栅 |
| 文章编号： | 1000-8055(2004)02-0219-05 |
| 收稿时间： | 2003/5/12 0:00:00 |
| 修稿时间： | 2003年5月12日 |
An Experimental Study of Cooling Film in Negatively Bowed Cascade with Large Turning Angle |
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| CHEN Fu,YANG Ke,SONG Yan-ping and WANG Zhong-qi.An Experimental Study of Cooling Film in Negatively Bowed Cascade with Large Turning Angle[J].Journal of Aerospace Power,2004,19(2):219-223. |
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| Authors: | CHEN Fu YANG Ke SONG Yan-ping and WANG Zhong-qi |
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| Institution: | Harbin Institute of Technology,Harbin150001,China;Harbin Institute of Technology,Harbin150001,China;Harbin Institute of Technology,Harbin150001,China;Harbin Institute of Technology,Harbin150001,China |
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| Abstract: | Transverse measurements are carried out at the outlet of the straight and negatively bowed turbine cascades with 106° turning angle respectively with and without cooling air injection from holes of the ten rows and from holes of several rows of the ten rows (totally 26 schemes).Experimental results show that negatively bowed cascade produces more energy loss than the straight one without cooling air injection.Cooling air injection from the holes on the pressure surface and from the holes on the suction surface near the trailing edge can reduce energy losses in both the straight and the negatively bowed cascades.The increase in loss is less in negatively bowed cascade than that in the straight one with cooling air injection from holes of several rows at the leading edge,whereas cooling air injection from holes of several rows at the trailing edge reduces the energy loss in the negatively bowed cascade. |
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| Keywords: | aerospace propulsion system cooling film large turning angle negatively bowed cascade |
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