A diaphragmless shock tube for high temperature kinetic studies.
A diaphragmless shock tube for high temperature kinetic studies.
复制标题
用于高温动力学研究的无隔膜激波管。
DOI：
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发表时间：
2008
影响因子：
1.6
通讯作者：
B. Giri
中科院分区：
文献类型：
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作者：
R. Tranter;B. Giri
研制了一种用于高温化学动力学研究的新型无隔膜激波管。给出了该装置的设计和性能数据，这些数据证明了可以产生的反应条件的范围和重复性。给出了在比常规激波管窄得多的压力范围内获得衰减区数据的能力，并给出了苯碘(P(2)=57+/-9和122+/-7Torr，T(2)=1250-1804K)单分子解离的激光纹影密度实验结果。将这些结果与从经典激波管得到的结果进行了比较，并讨论了理论方法外推的意义。最后，演示了使用DFST和在线质谱计来创建可重复的实验，这些实验可以对信号进行平均，以改善信号/噪声和质量峰的质量；这是传统激波管所不可能做到的，因为每个实验都必须被认为是独特的。
A novel, diaphragmless shock tube (DFST) has been developed for use in high temperature chemical kinetic studies. The design of the apparatus is presented along with performance data that demonstrate the range and reproducibility of reaction conditions that can be generated. The ability to obtain data in the fall off region, confined to much narrower pressure ranges than can be obtained with a conventional shock tube is shown, and results from laser schlieren densitometry experiments on the unimolecular dissociation of phenyl iodide (P(2)=57+/-9 and 122+/-7 torr, T(2)=1250-1804 K) are presented. These are compared with results similar to those that would be obtained from a classical shock tube and the implications for extrapolation by theoretical methods are discussed. Finally, the use of the DFST with an online mass spectrometer to create reproducible experiments that can be signal averaged to improve signal/noise and the quality of mass peaks is demonstrated; something that is not possible with a conventional shock tube where each experiment has to be considered unique.