국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	OH PLIF Visualization of the UVa Supersonic Combustion Experiment: Configuration C
저자	McRae, Colin D.;; Johansen, Craig T.;; Danehy, Paul M.;; Gallo, Emanuela C. A.;; Cantu, Luca M. L.;; Magnotti, Gaetano;; Cutler, Andrew D.;; Rockwell, Robert D., Jr.;; Goyne, Christopher P.;; McDnaiel, James C.
Keyword	ABSORPTION SPECTROSCOPY;; COMBUSTION CHAMBERS;; COMPUTATIONAL FLUID DYNAMICS;; FLOW VELOCITY;; FUEL COMBUSTION;; FUEL FLOW;; LASER INDUCED FLUORESCENCE;; NONINTRUSIVE MEASUREMENT;; SUPERSONIC COMBUSTION;; TURBULENCE
URL	http://hdl.handle.net/2060/20130003219
보고서번호	AIAA Paper 2013-0034
발행년도	2013
출처	NTRS (NASA Technical Report Server)
ABSTRACT	Non-intrusive hydroxyl radical (OH) planar laser-induced fluorescence (PLIF) measurements were obtained in configuration C of the University of Virginia supersonic combustion experiment. The combustion of hydrogen fuel injected through an unswept compression ramp into a supersonic cross-flow was imaged over a range of streamwise positions. Images were corrected for optical distortion, variations in the laser sheet profile, and different camera views. Results indicate an effect of fuel equivalence ratio on combustion zone shape and local turbulence length scale. The streamwise location of the reaction zone relative to the fuel injector was also found to be sensitive to the fuel equivalence ratio. The flow boundary conditions in the combustor section, which are sensitive to the fuel flow rate, are believed to have caused this effect. A combination of laser absorption and radiative trapping effects are proposed to have caused asymmetry observed in the images. The results complement previously published OH PLIF data obtained for configuration A along with other non-intrusive measurements to form a database for computational fluid dynamics (CFD) model validation.