| 旋转附加力对方通道内流动与换热的影响机理 |
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| 引用本文： | 刘传凯,丁水汀,陶智.旋转附加力对方通道内流动与换热的影响机理[J].北京航空航天大学学报,2009,35(3):276-279. |
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| 作者姓名： | 刘传凯 丁水汀 陶智 |
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| 作者单位： | 北京航空航天大学 航空发动机气动热力重点实验室, 北京 100191 |
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| 摘 要： | 在雷诺数为25000,旋转数为0~0.24,温度比为0~0.22的范围内,数值模拟了旋转光滑径向出流通道的内流动与换热分布,分析了哥氏力与离心浮升力对旋转管流的耦合作用机理.计算结果表明,切向哥氏力推动了通道截面内的双涡二次流,径向哥氏力则使得近侧壁流体加速和中心流体减速.离心浮升力对流动与换热的作用效果与哥氏力场的分布密切相关.换热计算结果从定性趋势上吻合公开文献中的实验现象,反映了旋转附加力的基本影响规律.
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| 关 键 词： | 燃气轮机 冷却叶片 传热 数值模拟 旋转 |
| 收稿时间： | 2008-03-11 |
Effects of rotating induced forces on fluid flow and heat transfer in square channel |
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| Liu Chuankai,Ding Shuiting,Tao Zhi.Effects of rotating induced forces on fluid flow and heat transfer in square channel[J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(3):276-279. |
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| Authors: | Liu Chuankai Ding Shuiting Tao Zhi |
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| Institution: | National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | Numerical simulations of turbulent flow and heat transfer in a rotating smooth radial outward flow passage were performed with rotation number from 0 to 0.24,density ratio from 0 to 0.22,and fixed Reynolds number of 25000.Effects of Coriolis force and Centrifugal force were analyzed with the three dimensional simulations and the following conclusions were drawn: the tangential component of Coriolis force induces cross stream secondary flow in the form of two-cell pattern,while the radial component of Coriol... |
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| Keywords: | gas turbines cooling blades heat transfer numerical simulation rotating |
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