为了揭示1+1/2(无低压导叶)对转涡轮流场的非定常流动特性,运用全三维粘性流场计算程序对某1+1/2对转涡轮模型级的流场进行了非定常数值模拟.结果表明,非定常计算可以获得比定常计算更为丰富的流场信息;非定常效应具有逐级累积的趋势;高压导叶压力面叶表静压展向分布比吸力面均匀;高低压动叶压力面和吸力面叶表静压的展向分布不均匀;高压动叶的负荷随叶高的增加而增大;高低压动叶出口气流角沿整个叶展均较大地偏离轴向,说明高低压涡轮的功负荷较高,在出功量上达到了设计目标.
参考文献
| [1] | J F Louis .Axial Flow Counter-Rotating Turbines[R].ASME 85-GT-218,1985. |
| [2] | B A Ponomariov et al.Using Contra-Rotating Rotors for Decreasing Sizes and Component Number in Small GTE[R].ASME 92-GT-414,1992. |
| [3] | C W Haldeman et al.Experimental and Computational Investigation of the Time-Averaged and Time-Resolved Pressure Loading on a Vaneless Counter-Rotating Turbine[R].ASME 2000-GT-0445,2000. |
| [4] | 蔡睿贤.对转涡轮基本分析[J].航空学报,1992(01):57. |
| [5] | 季路成 .关于复杂流场计算及对转涡轮设计与实验方案的初步研究[D].中国科学院工程热物理研究所,2000. |
| [6] | Ji Lucheng;Quan Xiaobo;Li Wei et al.A Vaneless Counter-Rotating Turbine Design Towards Limit of Specific Work Ratio[R].AIAA,ISABE-2001-1062,2001. |
| [7] | Ji Lucheng;Xiang Lin;Huang Haibo et al.The Revelations from the Research About the Vaneless CounterRotating Turbine[R].AIAA,ISABE-2003-1040,2003. |
| [8] | Rai M M .Three-Dimension Navier-Stokes Simulations of Turbine Rotor-Stator Interaction,Part I-Methodology[J].AIAA Journal of Propulsion and Power,1989,5(03):305-311. |
| [9] | Wang Huishe;Zhao Qingjun;Zhao Xiaolu et al.Unsteady Numerical Simulation of Shock Systems in Vaneless Counter-Rotating Turbine[R].ASME 2005-GT-68212,2005. |
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