국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Dual-Pump CARS Measurements in the University of Virginia''s Dual-Mode Scramjet: Configuration "C"
저자	Cutler, Andrew D.;; Magnotti, Gaetano;; Cantu, Luca;; Gallo, Emanuela;; Danehy, Paul M.;; Rockwell, Robert;; Goyne, Christopher;; McDaniel, James
Keyword	ALGORITHMS;; FLOW DISTRIBUTION;; HYBRID PROPULSION;; HYDROGEN FUELS;; NITROGEN;; OPTICS;; PLUMES;; PRESSURE DISTRIBUTION;; PROPULSION SYSTEM CONFIGURATIONS;; RAMAN SPECTROSCOPY;; SUPERSONIC COMBUSTION RAMJET ENGINES;; TURBINE PUMPS;; TURBULENT FLOW;; VIBRATION;; WIND TUNNEL TESTS
URL	http://hdl.handle.net/2060/20130003230
보고서번호	AIAA Paper 2013-0335
발행년도	2013
출처	NTRS (NASA Technical Report Server)
ABSTRACT	Measurements have been conducted at the University of Virginia Supersonic Combustion Facility in configuration C of the dual-mode scramjet. This is a continuation of previously published works on configuration A. The scramjet is hydrogen fueled and operated at two equivalence ratios, one representative of the scram mode and the other of the ram mode. Dual-pump CARS was used to acquire the mole fractions of the major species as well as the rotational and vibrational temperatures of N2. Developments in methods and uncertainties in fitting CARS spectra for vibrational temperature are discussed. Mean quantities and the standard deviation of the turbulent fluctuations at multiple planes in the flow path are presented. In the scram case the combustion of fuel is completed before the end of the measurement domain, while for the ram case the measurement domain extends into the region where the flow is accelerating and combustion is almost completed. Higher vibrational than rotational temperature is observed in those parts of the hot combustion plume where there is substantial H2 (and hence chemical reaction) present.