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针对高超声速飞行器工作时前缘恶劣的气动加热环境, 为了保证飞行器前缘的尖锐外形, 提出内嵌高温热管前缘结构. 针对热管内部复杂流动与换热情况, 对内嵌高温热管前缘结构进行一体化建模, 将模型的核心部件液态金属热管工作状况的计算与实验进行对比以验证模型的可靠性. 本文还分析了给定工况下内嵌高温热管前缘结构的热防护效果, 其中壁面最高温度下降了11.6%, 最低温度上升了8%, 高温区和低温区均被封闭在前缘外层区域, 内层温度更加均匀, 实现了热流由高温区向低温区的转移, 削弱了高温区的热负荷. 本文还分析了接触热阻对热管冷却前缘结构效果的影响.The structure of leading edge embedded high temperature heat-pipe (HTHP) is considered as thermal protection system to prevent hypersonic vehicle's leading edge that requires sharp figure during hypersonic flying from the serious aerodynamic heating. Under the complex flow and heat transfer condition of the heat pipe, the model of leading edge embedded HTHP is established. In contrast with experimental results, the model of heat pipe which is a core component of leading edge embedded HTHP has good accuracy. Using a numerical method, we analyze the thermal protection effect of leading edge embedded HTHP under the given condition. The maximum temperature of leading edge can be decreased by 11.6% and the minimum temperature of the leading edge increases by 8%. Both high temperature areas and low temperature areas are closed in the outer zone of the leading edge. While the temperature distribution of the inner zone is almost uniform, the heat transfer from high temperature areas to low areas is achieved. Thus the thermal load in high temperature areas is reduced. The influence of contact thermal resistance on the thermal protection effect of heat-pipe cooled leading edge is also studied.
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Keywords:
- heat pipes /
- leading edge /
- leading thermal protection /
- aerodynamic heating
[1] Sun J, Liu W Q 2012 Acta Phys. Sin. 61 124401 [孙健, 刘伟强 2012 61 124401
[2] Silverstein C C 1971 NASA CR-1971-1857
[3] Niblock G A, Reeder J C, Huneidi F 1974 J. Spacecraft Rockets Rockets 11 314
[4] Anon 1972 NASA CR-1972-123912
[5] Peeples M E, Reeder J C, Sontag K E T 1979 NASA CR-1979-159096
[6] Boman B L, Citrin E C, Garner E C, Stone J E 1990 NASA CR-1990-181922
[7] Clark L T, Glenn G S 1998 AIAA-88-2679
[8] Glass D E, Merrigan M A, Sena J T 1998 NASA CR-1998-207642
[9] Chen L Z, Ou D B, Liu D Y 2009 Frontier Sci. 2 41 (in Chinese) [陈连忠, 欧东斌, 刘德英 2009 前沿科学 2 41]
[10] Liu D H, Shang X C 2012 Acta Aeron. Astron. Sin. 33 (in press) (in Chinese) [刘冬欢, 尚新春 2012 航空学报 33 (in press)]
[11] Zhuang J, Xu T M, Shi S C 1989 Heat Pipe and Heat Pipe Heat Exchanger (Shanghai: Shanghai Jiaotong University Press) p53 (in Chinese) [庄骏, 徐通明, 石寿椿 1989 热管与热管换热器 (上海: 上海交通大学出版社) 第53页]
[12] Faghri A 1995 Heat pipe science and technology (USA: Taylor & Francis) p159
[13] Chai B H, Du W K, Wei G F, Feng B, Bi K M 2010 A-Energy Sci. Tech. 4 53 (in Chinese) [柴宝华, 杜文开, 卫光仁, 魏国锋, 冯波, 毕可明 2010 原子能科学技术 4 53 ]
[14] Jiang G Q, Ai B C, Yu J J, Chen L Z 2008 11th Countrywide Heat Pipe Conference Weihai September 7-11 72 (in Chinese) [姜贵庆, 艾邦成, 俞继军, 陈连忠 2008 第十一届全国热管会议 威海9月7日-11日72]
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[1] Sun J, Liu W Q 2012 Acta Phys. Sin. 61 124401 [孙健, 刘伟强 2012 61 124401
[2] Silverstein C C 1971 NASA CR-1971-1857
[3] Niblock G A, Reeder J C, Huneidi F 1974 J. Spacecraft Rockets Rockets 11 314
[4] Anon 1972 NASA CR-1972-123912
[5] Peeples M E, Reeder J C, Sontag K E T 1979 NASA CR-1979-159096
[6] Boman B L, Citrin E C, Garner E C, Stone J E 1990 NASA CR-1990-181922
[7] Clark L T, Glenn G S 1998 AIAA-88-2679
[8] Glass D E, Merrigan M A, Sena J T 1998 NASA CR-1998-207642
[9] Chen L Z, Ou D B, Liu D Y 2009 Frontier Sci. 2 41 (in Chinese) [陈连忠, 欧东斌, 刘德英 2009 前沿科学 2 41]
[10] Liu D H, Shang X C 2012 Acta Aeron. Astron. Sin. 33 (in press) (in Chinese) [刘冬欢, 尚新春 2012 航空学报 33 (in press)]
[11] Zhuang J, Xu T M, Shi S C 1989 Heat Pipe and Heat Pipe Heat Exchanger (Shanghai: Shanghai Jiaotong University Press) p53 (in Chinese) [庄骏, 徐通明, 石寿椿 1989 热管与热管换热器 (上海: 上海交通大学出版社) 第53页]
[12] Faghri A 1995 Heat pipe science and technology (USA: Taylor & Francis) p159
[13] Chai B H, Du W K, Wei G F, Feng B, Bi K M 2010 A-Energy Sci. Tech. 4 53 (in Chinese) [柴宝华, 杜文开, 卫光仁, 魏国锋, 冯波, 毕可明 2010 原子能科学技术 4 53 ]
[14] Jiang G Q, Ai B C, Yu J J, Chen L Z 2008 11th Countrywide Heat Pipe Conference Weihai September 7-11 72 (in Chinese) [姜贵庆, 艾邦成, 俞继军, 陈连忠 2008 第十一届全国热管会议 威海9月7日-11日72]
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