| 高压燃气涡轮径向内冷叶片气热耦合的数值分析 |
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| 引用本文： | 董平,黄洪雁,冯国泰.高压燃气涡轮径向内冷叶片气热耦合的数值分析[J].航空动力学报,2008,23(2):201-207. |
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| 作者姓名： | 董平 黄洪雁 冯国泰 |
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| 作者单位： | 哈尔滨工业大学,能源科学与工程学院,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金(50476028)，国家自然科学基金(50576017) |
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| 摘 要： | 采用气热耦合方法对采用径向内冷方式的MarkII型跨声速高压燃气涡轮金属导叶进行数值模拟,通过分析叶片通道内的传热和流动过程发现叶片表面附面层内流动非常复杂,包含层流流动、转捩和湍流流动状态,所以只有使用转捩模型计算的叶片附面层内流动与实际情况相符,叶片壁面温度和换热系数分布与实验结果吻合的较好,使用其他湍流模型由于不能准确描述附面层内流动而使得计算结果误差相对较大,但是所有的湍流模型都能很好的模拟附面层以外流动.
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| 关 键 词： | 航空、航天推进系统 气热耦合 高压燃气涡轮 内部冷却 转捩流动 数值模拟 |
| 文章编号： | 1000-8055(2008)02-0201-07 |
| 收稿时间： | 2007/1/11 0:00:00 |
| 修稿时间： | 2007年1月11日 |
Conjugate heat transfer analysis of a high pressure turbine vane with radial internal cooling passages |
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| DONG Ping,HUANG Hong-yan and FENG Guo-tai.Conjugate heat transfer analysis of a high pressure turbine vane with radial internal cooling passages[J].Journal of Aerospace Power,2008,23(2):201-207. |
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| Authors: | DONG Ping HUANG Hong-yan and FENG Guo-tai |
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| Affiliation: | School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China;School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China;School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China |
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| Abstract: | In order to accurately predict aerodynamics and heat transfer between external hot gas and internal cooling passages as well as conduction within metal blade,numerical analysis using conjugate heat transfer methodology for the MarkII transonic turbine guide vane,which was cooled internally by air flowing through 10 radial round pipes,was carried out.The results show that the flow inside boundary layer is very complex,which includes laminar flow,transition process and turbulent flow.The prediction with M-L(Menter and Langtry) transition model provides the closest agreement with the actual flow conditions inside boundary layer,and the distributions of vane temperature and heat transfer coefficient predicted by this model agree well with the measured experimental data whereas the results with other turbulence models over-predict.However,all turbulence models can well predict aerodynamics of gas outside boundary layer. |
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| Keywords: | aerospace propulsion system conjugate heat transfer methodology high pressure turbine guide vane internal cooling transition process numerical simulation |
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