O_2-LIPFによる超音速流れの可視化 : 第2報, 検出系の改善と検出光の解析

概要

論文の詳細を見る
This paper describes the O_2 LIPF (laser-induced predissociative fluorescence) method for visualization of high-speed flows. Under the condition of weak laser excitation, the linear dependence of O_2-LIPF both on number density of oxygen molecules and on laser intensity is presented theoretically and verified experimentally using a static condition. The vibrational and rotational temperature distributions along a centerline of a supersonic free jet are calculated theoretically, leading to the theoretical fluorescence signal distribution. To improve the S/N ratio of a detection system including an image intensifier and a high-sensitivity CCD camera, three spectral filters are selected to eliminate the scattered laser beam, and three images visualized through them are compared. A low-speed oxygen flow is also successfully visualized using O_2-LIPF.
一般社団法人日本機械学会の論文
1996-02-25