| 浮动壁火焰筒壁温试验和计算分析 |
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| 引用本文： | 李彬,吉洪湖,江义军,赵清杰. 浮动壁火焰筒壁温试验和计算分析[J]. 南京航空航天大学学报, 2007, 39(6): 771-774 |
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| 作者姓名： | 李彬 吉洪湖 江义军 赵清杰 |
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| 作者单位： | 南京航空航天大学能源与动力学院,南京,210016;中国燃气涡轮研究院,成都,610500;南京航空航天大学能源与动力学院,南京,210016;中国燃气涡轮研究院,成都,610500 |
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| 摘 要： | 对某浮动壁火焰筒的壁温进行了试验和计算分析。该火焰筒应用了新型的浮动壁结构和高效的冲击/发散复合冷却技术。壁温分布试验在全环形燃烧室试验台上进行,采用热电偶和示温漆测量。计算采用了稳态导热问题的有限元求解方法。研究分析表明,火焰筒壁温在材料的长期许用温度范围内,壁温计算反映了火焰筒壁温的分布规律和趋势。冲击/发散复合冷却方式的轴向壁温梯度小于缝槽气膜冷却方式,对降低热应力水平,延长火焰筒使用寿命有利。
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| 关 键 词： | 燃烧室 火焰筒 浮动壁 冲击/发散冷却 |
| 文章编号： | 1005-2615（2007）06-0771-04 |
| 收稿时间： | 2006-10-23 |
| 修稿时间： | 2007-07-04 |
Experimental and Numerical Analysis of Temperature Distribution on Floating-Wall Flame Tube of Combustor |
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| Li Bin,Ji Honghu,Jiang Yijun,Zhao Qingjie. Experimental and Numerical Analysis of Temperature Distribution on Floating-Wall Flame Tube of Combustor[J]. Journal of Nanjing University of Aeronautics & Astronautics, 2007, 39(6): 771-774 |
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| Authors: | Li Bin Ji Honghu Jiang Yijun Zhao Qingjie |
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| Abstract: | The experimental and numerical study of temperature distribution of a floating-wall flame tube is presented.The flame tube uses a new-style floating-wall construction and an efficient impingement/effusion cooling technique.The wall-temperature distribution is tested on an annular combustor by using thermocouple and temperature-indicating paint.The finite element method for steady-state conduction problem is adopted to calculate the wall-temperature.The study shows that the flame tube wall-temperature is in the range of extended allowable temperature of the material.The wall calculation essentially reflects distributing tendency of the tube wall-temperature.The wall-temperature gradient in axis direction of impingement/effusion cooling is less than that of slot film cooling.It is effective for depressing thermal stress and extending liner-employing life. |
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| Keywords: | combustor flame tube floating-wall impingement/effusion cooling |
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