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Development of Aceton Laser Induced-Fluorescence Diagnostic Method for the Quantitative Measurement of Supersonic Flows

Development of Aceton Laser Induced-Fluorescence Diagnostic Method for the Quantitative Measurement of Supersonic Flows
用于超声速流动定量测量的丙酮激光诱导荧光诊断方法的开发
批准号:
18560171
负责人:
MASUDA Mitsuharu
金额:
$2.47万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2006
资助国家:
日本
项目状态:
已结题
起止时间:
2006 至 2007

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项目成果

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中文摘要
翻译
激光诱导荧光(LIF)为超音速和跨音速流动的测量提供了一种强大的诊断技术。激光和示踪材料的几种组合已为人所知。在染料激光获得的紫外光照射下,一氧化氮发出荧光。然而,一氧化氮是有毒的,此外,它是一种活性分子,与氧气发生反应。氧通过ArF准分子激光器发射激光诱导荧光。这可以避免一氧化氮的问题,但荧光产率通常很高。由Ar离子激光激发的碘提供了另一种诊断LIF的方法。这种方法的荧光产率远大于以上两种方法,但由于碘的腐蚀性,限制了其在流场中的应用。近年来,丙酮激光诱导荧光方法引起了人们的极大关注。丙酮无腐蚀性,无毒,放出强激光诱导因子。丙酮激光诱导荧光方法有望成为可压缩流动测量的一种定量诊断工具。然而,由于对丙酮在低温条件下的荧光特性还没有很好的了解,这种方法还没有被证实可以测量可压缩流动。在这项研究中,这项研究是为了验证这种方法作为一种诊断工具测量温度低于大气的超音速流动中数密度的可能性。低温状态是由喷嘴喷出的欠膨胀超音速喷流造成的。用CCD相机测量了喷流中的激光诱导荧光强度,并与扩展的瑟伯等人的多步衰变模型计算的理论强度进行了比较。进入低温状态。这种比较使检验扩展模型的有效性成为可能。利用这个检验模型,我们估计了激光诱导荧光测量的数密度对温度变化的敏感性,并检验了测量的准确性。
英文摘要
Laser-induced fluorescence (LIF) offers a powerful diagnostic technique for the measurement of supersonic and transonic flows. Several combinations of lasers and tracer materials have been known. Nitric oxide emits fluorescence when irradiated by ultraviolet light obtained by a dye laser. Nitric oxide, however, is toxic and, in addition, it is an active molecule and reacts with oxygen. Oxygen emits LIF by an ArF excimer laser. This can avoid the problems of nitric oxide, but the fluorescence yield is usually very. Iodine excited by an argon ion laser provides another LIF diagnostic method. The fluorescence yield of this is much larger than the above two, but the application to the flow field is limited by the corrosive nature of iodine.In recent years, the acetone LIF method has attracted considerable attention. Acetone is non-corrosive, weak toxic and emits strong LIF. The acetone LIF method is promising as a quantitative diagnostic tool for the measurement of compressible flows. However, it has not been verified that this method can measure compressible flows because fluorescence characteristics of acetone under low temperature conditions are not well understood. In this research, the study is done to check the possibility of this method as a diagnostic tool to measure the number density in supersonic flows where temperature is lower than the atmosphere. Low temperature condition is made by underexpanded supersonic jets emanating from nozzles. The LIF intensity in the jets is measured by the CCD camera and compared with the theoretical intensity calculated by extending the multi-step decay model of Thurber, et al. to a low temperature regime. This comparison makes it possible to check the validity of the extended model. Using this checked model, we estimate the sensitivity of the LIF-measured number density to change in temperature, and examine the accuracy in measurement.
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会议论文
Aceton LIF Characteristics Measured with Underexpanded Supersonic Freejets
使用欠膨胀超音速自由喷气发动机测量的 Aceton LIF 特性
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者: [T., Handa, et. al.]
通讯作者: et. al.
DOI: --
发表时间: 2007
期刊: J. Visualization 27
影响因子: --
作者: [M., Kashitani, et. al.]
通讯作者: et. al.
不足膨張噴流を利用した低温状態におけるアセトンのLIF特性に関する研究
利用欠膨胀射流研究丙酮在低温条件下的LIF特性
DOI: --
发表时间: 2006
期刊: 可視化情報 26-増刊1号
影响因子: --
作者: [半田太郎, 青木俊之, 益田光治, 樫谷賢士, 山口裕]
通讯作者: 山口裕
不足膨華噴流を利用した低温状態におけるアセトンのLIF特性に関する研究
利用欠膨胀射流研究丙酮在低温条件下的LIF特性
DOI: --
发表时间: 2006
期刊: 可視化情報 26
影响因子: --
作者: [半田 太郎, ほか4名]
通讯作者: ほか4名
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