Feasibility of optical computerized tomography for measuring the species concentration distribution of flow fields

作者：Chen, Yun-yun^*; Yu, Yang; Chen, Xuan; Zhang, Ying-ying

来源：Optics and Lasers in Engineering, 2017, 95: 35-41.

DOI：10.1016/j.optlaseng.2017.03.011

• Optical computerized tomography (OCT)
• Species composition distribution
• Refractive index
• interferometry
• Moire deflectometry

In this paper, the feasibility of using optical computerized tomography (OCT) methods for measuring the distribution of species concentration for flow fields is analyzed and discussed. First, feasible methods are chosen for two or three objects composed flow fields from the perspective of the measurable principle. Second, both common gas and plasma are chosen as two typical examples for specific analysis and discussion. The results show that the feasibility and applicable range of OCT methods are related to the temperature, pressure, and species composition of the measured flow fields. Finally, the study indicates that OCT methods are more suitable for measuring the distribution of species composition for common gas rather than plasma. In a word, this study could be helpful for extending the applicable range of OCT methods, which are based on the measurement of the refractive index.

• 出版日期2017-8
• 单位南京晓庄学院; 南京信息工程大学