| 高负荷低展弦比涡轮流动机理 |
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| 引用本文： | 严红明,钟兢军,张晓辉.高负荷低展弦比涡轮流动机理[J].大连海事大学学报(自然科学版),2010,36(3). |
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| 作者姓名： | 严红明 钟兢军 张晓辉 |
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| 作者单位： | 严红明,YAN Hongming(哈尔滨工业大学,能源科学与工程学院,哈尔滨,150001);钟兢军,张晓辉,ZHONG Jingjun,ZHANG Xiaohui(大连海事大学,轮机工程学院,辽宁,大连,116026) |
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| 摘 要： | 为满足固体推进剂涡轮火箭发动机高负荷、高效率、低展弦比涡轮设计要求,对发动机涡轮进行初步设计.采用哈尔滨工业大学编制的叶型编辑程序,设计单级膨胀近似为4的涡轮动静叶叶型,采用NUMECA软件对所设计的涡轮动静叶流场进行数值计算.结果表明:高膨胀比涡轮动静叶整个流道内均出现超音速流动,采用缩放通道可减小激波损失;静叶出口马赫数较高,产生的尾缘激波与相邻叶栅吸力面相交,使吸力面马赫数波动,产生逆压梯度,增大了流动损失;在动叶中,端壁附面层内二次流沿壁面汇聚到吸力面中部,使吸力面中部损失增大.
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| 关 键 词： | 涡轮 高负荷 低展弦比 气动设计 |
Flow mechanism of high load and low aspect ratio turbine |
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| YAN Hongming,ZHONG Jingjun,ZHANG Xiaohui.Flow mechanism of high load and low aspect ratio turbine[J].Journal of Dalian Maritime University,2010,36(3). |
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| Authors: | YAN Hongming ZHONG Jingjun ZHANG Xiaohui |
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| Institution: | YAN Hongming1,ZHONG Jingjun2,ZHANG Xiaohui2(1.School of Energy Science , Engineering,Harbin Institute of Technology,Harbin 150001,China,2.Marine Engineering College,Dalian Maritime University,Dalian 116026,China) |
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| Abstract: | To satisfy turbine design requirements for solid propellant air-turbo-rocket,a high load,high efficiency and low aspect ratio turbine was primarily designed.The stator and rotor profiles of the turbine whose expansion ratio was about four was primarily designed by using the profiles edit program compiled by Harbin Institute of Technology.The flow fields of the stator and rotor were simulated with the NUMECA software.Results indicate that supersonic flow exists in the stator and rotor flow-path of high expan... |
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| Keywords: | turbine high load low aspect ratio aerodynamic design |
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