Spatial Distribution Analysis of Hydrocarbon Fuel by Infrared Light Absoption Computed Tomography

红外光吸收计算机断层扫描碳氢燃料的空间分布分析

• 批准号: 07650250
• 负责人: KAWAZOE Hiromitsu
• 金额: $ 1.47万
• 依托单位: Tottori University (1996-1997)Nagoya University (1995)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650250/
• 关键词: Infrared light absorption; Computed tomogrphy; Laser diagnostics; Hydrocarbon fuel; Spatial distribution; 赤外線; CT; 炭化水素燃料; 濃度分布

The objectives of the research are to study feasibility of a new measurement technique for gaseous fuel concentration in such a combustor as an internal combustion engine, gas turbine engine and a burnner. This measuring device will play a vital role in developping a new combustor which will save fuel energy and emit low exhaust gas to protect the environment.A system to measure gaseous hydrocarbon distributions was devised, which is based on infrared light absorption by C-H stretch mode of vibration and computed tomography method. It is called IR-CT method in the research. Affection of laser light power fluctuation was diminished by monitoring source light intensity by the second infrared light detector. Calibration test for methane fuel was carried out to convert spatial data of line absorption coefficient into quantitative methane concentration. This system was applied to three flow fields. The first is methane flow with lifted flame which is generated by a gourd-shaped fuel nozzle. … More Feasibility of the IR-CT method was confirmed through the measurement. The second application is combustion field with diffusion flame. Caliblation to determine absorptivity was undertaken, and measured line absorption coefficient was converted spatial fuel concentration using corresponding temperature data. The last case is modeled incylinder gas flow of internal combustion engine, where gaseous methane was led to the intake valve in steady flow state. The fuel gas flow simulates behavior of gaseous gasoline which is evaporated at intake valve tulip. Computed tomography measurement of inner flow is essentially difficult because of existence of surrounding wall. In this experiment, infrared laser beam was led to planed portion by infrared light fiber. It is found that fuel convection by airflow takes great part in air-fuel mixture formation and the developped IR-CT system to measure fuel concentration is useful to analyze air-fuel mixture formation process and to develop new combustors. Less

本研究的目的是研究一种新的气体燃料浓度测量技术在内燃机、燃气涡轮发动机和燃烧器等燃烧器中的可行性。该测量装置将对开发一种新型燃烧器起到至关重要的作用，这种燃烧器将节省燃料能源，排放低废气，保护环境。设计了一种基于C-H振动拉伸模式红外吸收和计算机断层扫描的气态烃分布测量系统。在研究中称之为IR-CT方法。利用第二红外光探测器监测光源光强，降低了激光光功率波动的影响。对甲烷燃料进行了标定试验，将线吸收系数的空间数据转化为定量的甲烷浓度。该系统应用于三个流场。第一种是由葫芦形燃料喷嘴产生的带提升火焰的甲烷流。通过实测，进一步证实了红外- ct方法的可行性。第二种应用是扩散火焰的燃烧领域。进行了确定吸收率的校准，并使用相应的温度数据将测量到的线吸收系数转换为空间燃料浓度。最后一种情况是模拟内燃机气缸气体流动，其中气态甲烷在稳定流动状态下被引入进气门。燃气流动模拟了气体汽油在进气门处蒸发的行为。由于周围壁面的存在，内部流动的计算机断层测量是非常困难的。本实验采用红外光纤将红外激光束引导至平面部分。研究发现，气流对燃料的对流作用在空气-燃料混合气的形成过程中起着重要的作用，所研制的红外- ct燃料浓度测量系统对分析空气-燃料混合气的形成过程和开发新型燃烧室具有重要意义。少

项目成果

江見泰行,川添博光,中村佳朗: "赤外線吸収CT法による拡散火災場の燃料濃度の測定" 第32回日本航空宇宙学会 関西・中部支部合同秋期大会講演集. 11-12 (1995)

Yasuyuki Emi、Hiromitsu Kawazoe、Yoshiro Nakamura：“利用红外吸收 CT 法测量扩散火场中的燃料浓度”日本航空学会关西和中部分会第 32 届秋季会议论文集 11-12（。 1995)

江見泰行: "赤外線吸収CT法を用いた高温度場における燃料濃度の測定" 日本航空宇宙学会中部・関西支部合同秋期大会講演集. 49-50 (1996)

Yasuyuki Emi：“利用红外吸收CT法测量高温场中的燃料浓度”日本航空学会中部和关西分会秋季联合会议论文集49-50（1996）。

H.Kawazoe, et al.: "Computed Tomography Measurement of Gaseous Fuel Concentration by Infrared Laser Light Absorption" Proc.SPIE : Optical Technology in Fluid,Thermal,and Conbustion Flow. Vol.3172. 576-584 (1997)

H.Kawazoe 等人：“通过红外激光吸收进行气体燃料浓度的计算机断层扫描测量”Proc.SPIE：流体、热和燃烧流中的光学技术。

H.Kawazoe,et al.: "Computed Tomography Measurement of Gaseous Fuel Concentration by Infrared Laser Light Absorption" Proc.SPIE Optical Technology in Fluid,Thermal,and Combustion Flow III. Vol.3172. 576-584 (1997)

H.Kawazoe 等人：“通过红外激光吸收进行气体燃料浓度的计算机断层扫描测量”Proc.SPIE 流体、热和燃烧流中的光学技术 III。

H.Kawazoe, et al.: "Computed Tomography Measurement of Gaseous Fuel Concentration by Infrared Laser Light Absorption" Proc.SPIE : Optical Technology in Fluid, Thermal, and Combustion FLow III. Vol.3172. 576-584 (1997)

H.Kawazoe 等人：“通过红外激光吸收进行气体燃料浓度的计算机断层扫描测量”Proc.SPIE：流体、热和燃烧流动中的光学技术 III。