| タイトル | Non-Intrusive Optical Diagnostic Methods for Flowfield Characterization |
| 本文（外部サイト） | http://hdl.handle.net/2060/20010000481 |
| 著者（英） | Terrell, Charles A.; Lee, Ja. H.; Spraggins, Darrell; Tabibi, Bagher M.; Weinstein, Leonard M. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1997-02-01 |
| 言語 | eng |
| 内容記述 | Non-intrusive optical diagnostic techniques such as Electron Beam Fluorescence (EBF), Laser-Induced Fluorescence (LIF), and Focusing Schlieren (FS) have been setup for high-speed flow characterization and large flowfield visualization, respectively. Fluorescence emission from the First Negative band of N2(+) with the (0,0) vibration transition (at lambda =391.44 nm) was obtained using the EBF technique and a quenching rate of N2(+)* molecules by argon gas was reported. A very high sensitivity FS system was built and applied in the High-Speed Flow Generator (HFG) at NASA LaRC. A LIF system is available at the Advanced Propulsion Laboratory (APL) on campus and a plume exhaust velocity measurement, measuring the Doppler shift from lambda = 728.7 nm of argon gas, is under way. |
| NASA分類 | Fluid Mechanics and Thermodynamics |
| レポートNO | URC97123 |
| 権利 | No Copyright |
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