| 子午扩张对涡轮内旋涡结构影响的数值模拟 |
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| 引用本文： | 吴猛,王松涛,王仲奇,冯国泰.子午扩张对涡轮内旋涡结构影响的数值模拟[J].航空动力学报,2000,15(4):353-356. |
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| 作者姓名： | 吴猛 王松涛 王仲奇 冯国泰 |
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| 作者单位： | 哈尔滨工业大学241教研室,黑龙江,哈尔滨,150001 |
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| 基金项目： | 中国科学院资助项目，59636180， |
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| 摘 要： | 求解了某型航空发动机的低压涡轮导向器内流场.采用的数值方法为具有TVD性质的三阶精度GODUNOV格式,湍流模型为B-L代数模型及MML模型的混合修正模型.该涡轮导向器的一个显著特点是由于结构上的要求,静叶前子午流道在上端壁具有较大的扩张角.通过数值模拟及流场内涡系结构和损失的分析表明,由于子午扩张造成端壁附面层增厚并在静叶前形成较大的分离区.该分离区的存在不但使静叶前损失急剧增加而且使上端壁马蹄涡和通道涡尺度加大,强度增强,引起流道内损失增加.
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| 关 键 词： | 子午扩张 涡轮 分离流动 数值模拟 |
| 收稿时间： | 1999/11/23 0:00:00 |
| 修稿时间： | 1999-11-23 |
Numerical Simulation of Meridional Divergence on Vortex Structure in Turbomachinery |
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| WU Meng,WANG Song-tao,WANG Zhong-qi and FENG Guo-tai.Numerical Simulation of Meridional Divergence on Vortex Structure in Turbomachinery[J].Journal of Aerospace Power,2000,15(4):353-356. |
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| Authors: | WU Meng WANG Song-tao WANG Zhong-qi and FENG Guo-tai |
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| Affiliation: | 2nd Dept. Harbin Institute of Technology,Harbin150001,China;2nd Dept. Harbin Institute of Technology,Harbin150001,China;2nd Dept. Harbin Institute of Technology,Harbin150001,China;2nd Dept. Harbin Institute of Technology,Harbin150001,China |
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| Abstract: | The flow field in low pressure turbine guide vane was simulated by third order accuracy Godunov scheme with TVD property.The turbulence model was the combination of B-L algebraic model and MML model.A feature of this guide vane was existence of a long inlet duct with big meridional divergent angle in order to fulfill the requirements of the structure.The numerical simulation and analysis of the vortex structure in flow field indicated that a large separated zone resulted from the divergence of meridional profile.The separated zone not only increased loss before the stator but also increased the size and strength of horseshoe vortex and passage vortex. |
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| Keywords: | numerical simulation meridional divergence separated flow turb |
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