| タイトル | Development of a Dual-Pump CARS System for Measurements in a Supersonic Combusting Free Jet |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120000919 |
| 著者（英） | Danehy, Paul; Magnotti, Gaetano; Cutler, Andrew D. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 2012-01-09 |
| 言語 | eng |
| 内容記述 | This work describes the development of a dual-pump CARS system for simultaneous measurements of temperature and absolute mole fraction of N2, O2 and H2 in a laboratory scale supersonic combusting free jet. Changes to the experimental set-up and the data analysis to improve the quality of the measurements in this turbulent, high-temperature reacting flow are described. The accuracy and precision of the instrument have been determined using data collected in a Hencken burner flame. For temperature above 800 K, errors in absolute mole fraction are within 1.5, 0.5, and 1% of the total composition for N2, O2 and H2, respectively. Estimated standard deviations based on 500 single shots are between 10 and 65 K for the temperature, between 0.5 and 1.7% of the total composition for O2, and between 1.5 and 3.4% for N2. The standard deviation of H2 is ~10% of the average measured mole fraction. Results obtained in the jet with and without combustion are illustrated, and the capabilities and limitations of the dual-pump CARS instrument discussed. |
| NASA分類 | Fluid Mechanics and Thermodynamics |
| レポートNO | AAIA Paper-2012-1193
NF1676L-10868 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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