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Quantitative Thermochemical Measurements in High-Pressure Gaseous Combustion
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Author and Affiliation:
Kojima, Jun J.(Ohio Aerospace Inst., Cleveland, OH, United States);
Fischer, David G.(NASA Glenn Research Center, Cleveland, OH, United States)
Abstract: We present our strategic experiment and thermochemical analyses on combustion flow using a subframe burst gating (SBG) Raman spectroscopy. This unconventional laser diagnostic technique has promising ability to enhance accuracy of the quantitative scalar measurements in a point-wise single-shot fashion. In the presentation, we briefly describe an experimental methodology that generates transferable calibration standard for the routine implementation of the diagnostics in hydrocarbon flames. The diagnostic technology was applied to simultaneous measurements of temperature and chemical species in a swirl-stabilized turbulent flame with gaseous methane fuel at elevated pressure (17 atm). Statistical analyses of the space-/time-resolved thermochemical data provide insights into the nature of the mixing process and it impact on the subsequent combustion process in the model combustor.
Publication Date: Jul 12, 2012
Document ID:
20120015040
(Acquired Oct 23, 2012)
Subject Category: SPACECRAFT PROPULSION AND POWER
Report/Patent Number: E-18404
Document Type: Oral/Visual Presentation
Meeting Information: Advanced Engine Diagnostics; 12-13 Jul. 2012; Niskayuna, NY; United States
Contract/Grant/Task Num: NNC12CA21C; WBS 561581.02.08.03.44.02
Financial Sponsor: NASA Glenn Research Center; Cleveland, OH, United States
Organization Source: NASA Glenn Research Center; Cleveland, OH, United States
Description: 25p; In English; Original contains color illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: COMBUSTIBLE FLOW; COMBUSTION CHAMBERS; GASEOUS FUELS; HIGH PRESSURE; HYDROCARBONS; METHANE; RAMAN SPECTROSCOPY; REACTION KINETICS; STATISTICAL ANALYSIS; TEMPERATURE MEASUREMENT; THERMOCHEMISTRY; TURBULENT FLAMES
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