| 离心力场下多孔层的不同厚度对热驱动换热的影响 |
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| 引用本文： | 夏婕,常海萍.离心力场下多孔层的不同厚度对热驱动换热的影响[J].航空动力学报,2009,24(1):44-49. |
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| 作者姓名： | 夏婕 常海萍 |
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| 作者单位： | 1. 空军第十三飞行学院司令部,航空理论教研室,蚌埠,233000
2. 南京航空航天大学,能源与动力学院,南京,210016 |
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| 基金项目： | 国家自然科学基金，国防科技应用基础研究基金 |
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| 摘 要： | 以涡轮叶片新型超级冷却技术的研究为背景,在具有冷却通道的新型冷却结构中加入多孔介质,采用实验与数值模拟相结合的方法研究了不同多孔层厚度条件下,新型冷却结构的热驱动换热规律,实验和计算结果基本一致.研究结果表明不同多孔层厚度条件下,该新型冷却结构具有相同的换热规律:随着旋转速度、热流密度和冷气进口速度的增大,该结构的热驱动换热能力逐渐增强.同时实验研究发现,随着多孔层厚度的增大,热驱动换热效果降低.
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| 关 键 词： | 多孔介质 厚度 热驱动 |
| 收稿时间： | 2007/12/22 0:00:00 |
| 修稿时间： | 2008/8/18 0:00:00 |
Study effect of different thickness of porous layer on thermally driven heat transfer in a centrifugal force field |
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| XIA Jie and CHANG Hai-ping.Study effect of different thickness of porous layer on thermally driven heat transfer in a centrifugal force field[J].Journal of Aerospace Power,2009,24(1):44-49. |
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| Authors: | XIA Jie and CHANG Hai-ping |
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| Institution: | 1.Avigation Theory Staff Room;The Air Force 13th Flight Academy;Bangbu 23000;China;2.College of Energy and Power Engineering;Nanjing University of Aeronautics Astronautics;Nanjing 210016;China |
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| Abstract: | Based on the research of turbine blade super cooling technology,porous medium was installed in a new kind of cooling configuration with cooling tunnels.Experiments and numerical simulations were carried out to investigate the thermally driven heat transfer rules in the new kind of cooling configuration with different thickness of porous layers in a centrifugal force field.The results of experiments and numerical simulations are consistent basically.The results of study show that the heat transfer rules of t... |
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| Keywords: | porous medium thickness thermally driven |
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