| 冷气喷射对直叶栅型面压力及气动损失分布影响的实验研究 |
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| 引用本文： | 陈浮,杨弘,龚存忠,冯国泰,王仲奇.冷气喷射对直叶栅型面压力及气动损失分布影响的实验研究[J].工程热物理学报,1998(1). |
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| 作者姓名： | 陈浮 杨弘 龚存忠 冯国泰 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!哈尔滨，150001，哈尔滨工业大学能源科学与工程学院!哈尔滨，150001，哈尔滨工业大学能源科学与工程学院!哈尔滨，150001，哈尔滨工业大学能源科学与工程学院!哈尔滨，150001，哈尔滨工业大学能源科学与工程学院!哈尔滨，150001 |
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| 摘 要： | 提高燃气涡轮比功率，降低比油耗要通过升高涡轮入口温度和压气机压比实现，但必须对涡轮叶片实施诸如气膜冷却等保护措施。Ito和Goldstein1]，Yamamoto2]等分别研究了冷气喷射对在叶栅气动性能的影响。本文通过实验研究了冷气喷射对叶型型面压力和叶栅流道内气动损失的影响，并得出了一些有意义的结论。1实验装置实验在哈尔滨工业大学发动机气体动力研究中心低速风洞实验台3]上进行。图1及表1给出了实验用叶片型线（取自一典型涡轮导向器叶型），冷气喷射孔位置及静压孔分布。叶片表面前缘、吸力面后部和压力面后部开了三列孔，每列孔…
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| 关 键 词： | 冷气喷射 型面压力 气动损失 直叶栅 |
EFFECTS OF COOLANT-AIR INJECTION ON SURFACE PRESSURE AND AERODYNAMIC LOSS DISTRIBUTION OF A LINEAR TURBINE CASCADE |
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| CHEN Fu, YANG Hong, GONG Cunzhong, FENG Guotai ,WANG Zhongqi.EFFECTS OF COOLANT-AIR INJECTION ON SURFACE PRESSURE AND AERODYNAMIC LOSS DISTRIBUTION OF A LINEAR TURBINE CASCADE[J].Journal of Engineering Thermophysics,1998(1). |
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| Authors: | CHEN Fu YANG Hong GONG Cunzhong FENG Guotai WANG Zhongqi |
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| Abstract: | The effects on turbine blade surface pressure and aerodynamic loss distribution ofcoolantanair inject from each of three individual rows of coolant holes on the blade leading-edge, and the rear of the suction and the pressure surface were investigated in a Iinearcascade. The experimental results showed that the changes in the pressure and aerodynamicloss distribution were dependent primarily on the amount of coolant added and the locationof injecting holes. The pressure surface injection did not change the pressure distributionas clearly as did the suction surface injection due mainly to the difference of mainstreampressure gradients and velocity. The air injection from suction surface led to the largesteffect on the loss increase while the air injection from the pressure surface exerted the leastinfluence. |
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| Keywords: | coolant-air injection surface pressure aerodynamic loss linear cascade |
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