| 旋转光滑U形通道内换热的三维模拟 |
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| 引用本文： | 邓宏武,陶智,徐国强,丁水汀. 旋转光滑U形通道内换热的三维模拟[J]. 工程热物理学报, 2002, 23(6): 739-741 |
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| 作者姓名： | 邓宏武 陶智 徐国强 丁水汀 |
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| 作者单位： | 北京航空航天大学动力系,北京,100083 |
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| 摘 要： | 数值模拟了旋转状态下涡轮叶片U形内冷通道湍流流场和温度场,分析了其换热的变化规律。结果表明,旋转状态下哥氏力、离心力和浮升力的共同作用使得流场相对于静态发生了较大的变化。总体上讲,旋转强化了换热。但是旋转使得换热能力在各个面分布不均,增加了温度梯度。
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| 关 键 词： | 燃气轮机 冷却叶片 对流传热 旋转 |
| 文章编号： | 0253-231X(2002)06-0739-03 |
| 修稿时间： | 2002-01-21 |
PREDICTION OF TURBULENT HEAT TRANSFER WITHIN A ROTATING SMOOTH U-SHAPED PASSAGE |
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| DENG Hong-Wu TAO Zhi XU Guo-Qiang DING Shui-Ting. PREDICTION OF TURBULENT HEAT TRANSFER WITHIN A ROTATING SMOOTH U-SHAPED PASSAGE[J]. Journal of Engineering Thermophysics, 2002, 23(6): 739-741 |
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| Authors: | DENG Hong-Wu TAO Zhi XU Guo-Qiang DING Shui-Ting |
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| Abstract: | A two-equation turbulence model has been used for prediction of heat transferin a rotating smooth serpentine passage. The coolant is pressurized air and operating conditions are selected to closely match real turbine operating parameters. Results show that increasing the Rotation number tended to increase averaged Nu number. However, there are different variation about heat transfer on different side. |
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| Keywords: | gas turbines cooling blades conservative heat transfer spining |
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