| 层流等离子体射流温度与速度测量 |
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| 引用本文： | 孟显,潘文霞,吴承康. 层流等离子体射流温度与速度测量[J]. 工程热物理学报, 2004, 25(3): 490-492 |
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| 作者姓名： | 孟显 潘文霞 吴承康 |
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| 作者单位： | 中国科学院力学研究所,北京,100080;中国科学院力学研究所,北京,100080;中国科学院力学研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金(No.50276065，No.50336010) |
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| 摘 要： | 本文分别应用光谱诊断、水冷皮托管及小尺寸杆状热流探针,对自由射入空气中的纯氩层流等离子体射流中心最高温度、滞止压力以及最大热流密度进行了测量,由测量结果导出了层流射流的中心最大速度,得到了射流气体温度和速度的轴向分布及其随工作电流和气流量变化的一些规律,探讨了气体的温度和速度对其向探针表面换热系数的影响。
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| 关 键 词： | 层流等离子体射流 温度 速度 |
| 文章编号： | 0253-231X(2004)03-0490-03 |
| 修稿时间： | 2004-01-08 |
TEMPERATURE AND VELOCITY MEASUREMENT OF LAMINAR PLASMA JET |
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| MENG Xian,PAN Wen-Xia,WU Cheng-Kang Institute of Mechanics,Chinese Academy of Sciences,Beijing ,China. TEMPERATURE AND VELOCITY MEASUREMENT OF LAMINAR PLASMA JET[J]. Journal of Engineering Thermophysics, 2004, 25(3): 490-492 |
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| Authors: | MENG Xian PAN Wen-Xia WU Cheng-Kang Institute of Mechanics Chinese Academy of Sciences Beijing China |
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| Affiliation: | MENG Xian,PAN Wen-Xia,WU Cheng-Kang Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080,China |
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| Abstract: | The axial temperature of a DC argon laminar plasma jet injecting into the atmospherewas measured by using spectrometric method. The stagnation pressuxe and maximum heat flux weremeasured through water-cooled pitot-tube and a small stick-shaped probe separately. The axial velocitywas calculated according to the measured pressure and temperature, The maximum temperature andvelocity of the jet flow at the center of the torch exit increase with arc current. The effect of gastemperature and velocity on heat transfer coefficient from jet flow to probe surface was also discussed. |
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| Keywords: | laminar plasma jet temperature velocity |
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