국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Characterization and Demonstrations of Laser-Induced Incandescence in Both Normal and Low-Gravity
저자	Randall L. Vander Wal
Keyword	Soot; LII; Laser-induced incandescence; Microgravity
URL	http://gltrs.grc.nasa.gov/reports/1997/CR-202347.pdf
보고서번호	NASA CR-202347
발행년도	1997
출처	NASA Glenn Research Center
ABSTRACT	Knowledge of soot volume fraction is important to a wide range of combustion studies in microgravity. Laser-induced incandescence (LII) offers high sensitivity, high temporal and spatial resolution in addition to geometric versatility for real-time determination of soot volume fraction. Implementation of LII into the 2.2 sec drop tower at The NASA-Lewis Research Center along with system characterization is described. Absolute soot volume fraction measurements are presented for laminar and turbulent gas-jet flames in microgravity to illustrate the capabilities of LII in microgravity. Comparison between LII radial intensity profiles with soot volume fraction profiles determined through a full-field light extinction technique are also reported validating the accuracy of LII for soot volume fraction measurements in a microgravity environment.