| 涡扇发动机涡轮空气系统流动和传热性能的CFD分析 |
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| 引用本文： | 李娜,吉洪湖.涡扇发动机涡轮空气系统流动和传热性能的CFD分析[J].航空动力学报,2008,23(11):2075-2081. |
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| 作者姓名： | 李娜 吉洪湖 |
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| 作者单位： | 南京航空航天大学能源与动力学院; |
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| 摘 要： | 以典型的小型涡轮风扇发动机的涡轮窄气系统为研究对象,用数值计算的方法研究了包括高低压涡轮盘腔、导向器内腔、轴承腔和相连的冷却气路在内的流动和传热特性.所研究的是一个多腔相连的多进口、多出口流动与传热问题,在研究中采用了流体域和同体域整体建模耦合计算的方法.根据计算结果,分析了结构参数和气动参数对该系统,尤其是其中轴承腔的温度分布的影响规律,提出了降低轴承腔温度的措施,并分析了各项措施的降温效果.充分展示了数值计算仿真存发动机空气系统分析方面的潜力.
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| 关 键 词： | 涡轮盘腔 轴承腔 冷却系统 对流换热 数值仿真 |
| 收稿时间： | 2007/11/16 0:00:00 |
| 修稿时间： | 7/9/2008 12:00:00 AM |
Numerical simulation of flow and heat transfer in turbine cooling system of a turbofan engine |
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| LI Na and JI Hong-hu.Numerical simulation of flow and heat transfer in turbine cooling system of a turbofan engine[J].Journal of Aerospace Power,2008,23(11):2075-2081. |
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| Authors: | LI Na and JI Hong-hu |
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| Institution: | LI Na,JI Hong-hu(College of Energy , Power Engineering,Nanjing University of Aeronautics , Astronautics,Nanjing 210016,China) |
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| Abstract: | The flow and heat transfer characteristics of a complex turbine cooling system were numerically simulated,which was a multi-cavity,multi-inlet and multi-outlet system installed in a typical small turbofan engine.The cooling system includes the cavity behind the high pressure turbine disc,the cavity in front of the low pressure turbine disc,supporting guide vane cavity,bearing cavity,and some connecting cooling air passages.In this study,the computational grids in both fluid domain and solid domain were esta... |
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| Keywords: | turbine disc cavity bearing cavity cooling system convective heat transfer numerical simulation |
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