| 灭火介质作用下火焰温度波动的时频分布 |
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| 引用本文： | 徐强,陈军,秦俊.灭火介质作用下火焰温度波动的时频分布[J].火灾科学,2003,12(3):156-159. |
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| 作者姓名： | 徐强 陈军 秦俊 |
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| 作者单位： | 1. 南京理工大学机械工程学院,南京,210094
2. 中国科学技术大学火灾科学国家重点实验室,合肥,230026 |
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| 基金项目： | 国家自然科学基金资助项目(50206022)，973项目(No.2001CB409600) |
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| 摘 要： | 利用时频分析方法对在灭火介质作用下的火焰温度波动进行了分析。获得了火焰点燃到被扑灭整个过程的时频分布谱图，由此得到温度波动频率随时间的变化情况。这种频率变化从一个方面反映了火焰的稳定性的变化。
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| 关 键 词： | 灭火介质 火焰 温度波动 时频分布 稳定性 |
| 文章编号： | 1004-5309(2003)03-0156-04 |
| 收稿时间： | 4/4/2003 12:00:00 AM |
| 修稿时间： | 6/8/2003 12:00:00 AM |
Time-frequency Distribution in Temperature Fluctuation of Flame under Extinguishant Exertion |
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| XU Qiong,CHEN Jun and QIN Jun.Time-frequency Distribution in Temperature Fluctuation of Flame under Extinguishant Exertion[J].Fire Safety Science,2003,12(3):156-159. |
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| Authors: | XU Qiong CHEN Jun and QIN Jun |
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| Institution: | Dept. of Mechanical Engineering, Nanjing University of Sci.& Tech., Nanjing 210094, P. R. China;State Key Laboratory of Fire Science, USTC;State Key Laboratory of Fire Science, USTC |
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| Abstract: | Temperature fluctuation of flame under extinguishant exertion is analyzed by time frequency analysis method. Spectrogram of time frequency distribution is obtained from ignition to extinction of flame. Frequency change of temperature fluctuation along with time appears in this distribution. The frequency change reflects stability change of flame from an aspect. |
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| Keywords: | time-frequency analysis temperature fluctuation flame |
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