| 进口热斑对涡轮级影响的非定常数值模拟 |
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| 引用本文： | 董素艳,刘松龄,朱惠人.进口热斑对涡轮级影响的非定常数值模拟[J].航空动力学报,2001,16(3):242-248. |
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| 作者姓名： | 董素艳 刘松龄 朱惠人 |
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| 作者单位： | 西北工业大学 706教研室, |
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| 摘 要： | 通过求解二维 N-S方程对涡轮级进口有温度畸变时的流场和温度场进行了非定常数值模拟。由于叶排间的相互运动 ,使叶片表面压力和叶栅通道内的流场呈周期性地变化 ;当涡轮进口有热斑时 ,热斑中的气流总温要高于周围气流温度 ,在通过涡轮级时 ,热斑中的高温气流会向转子压力面上迁移 ,导致转子压力面上产生热点。热斑的存在对涡轮级中的压力分布影响很小 ,但是严重影响温度场的分布。同时进口热斑相对导叶的位置对叶片表面温度的分布也有很大影响。
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| 关 键 词： | 涡轮 非定常流动 热斑 数值模拟 |
| 文章编号： | 1000-8055(2001)03-0242-07 |
| 收稿时间： | 2000/9/18 0:00:00 |
| 修稿时间： | 2000年9月18日 |
Unsteady Numerical Simulation on the Effects of Hot Streak Phenomena on Turbine Stage |
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| DONG Su-yan,LU Song-ling and ZHU Hui-ren.Unsteady Numerical Simulation on the Effects of Hot Streak Phenomena on Turbine Stage[J].Journal of Aerospace Power,2001,16(3):242-248. |
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| Authors: | DONG Su-yan LU Song-ling and ZHU Hui-ren |
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| Institution: | 7th Dept., Northwest Polytechnic University, Xi'an710072, China;7th Dept., Northwest Polytechnic University, Xi'an710072, China;7th Dept., Northwest Polytechnic University, Xi'an710072, China |
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| Abstract: | WT5BZ] The unsteady numerical simulation is completed by means of two dimensional,Navier Stokes analysis to predict unsteady flow and temperature fields with inlet temperature distortions in a turbine stage.Because of relative movement of blade rows,the pressure distributions on the blade and the flow field in the cascade vary periodically.When the distribution of inlet flow temperature becomes non uniform,the inlet hotter gas in the hot streak will migrate to the pressure surface of the rotor blade and causes the hot spot on it.The location of the hot streak has a significant effect on the surface temperature distribution.However the presence of hot streak has little effect on the pressure distribution on the blade surface. |
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| Keywords: | turbine unsteady flow hot streak numerical simulation |
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