Scalar concentration measurements in liquid-phase flows with pulsed lasers期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Scalar concentration measurements in liquid-phase flows with pulsed lasers

Authors:	Jerry?W.?Shan author-information" > author-information__contact u-icon-before" > mailto:jshan@jove.rutgers.edu" title=" jshan@jove.rutgers.edu" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,Daniel?B.?Lang,Paul?E.?Dimotakis

Affiliation:	(1) Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena, CA 91125, USA;(2) Present address: Department of Mechanical and Aerospace Engineering, Rutgers—The State University of New Jersey, Piscataway, NJ 08854, USA

Abstract:	The suitability of pulsed lasers for laser-induced-fluorescence (LIF) measurements of the local concentration of scalars in liquid-phase flows is investigated. Experiments were performed to measure the fluorescence intensity of aqueous solutions of rhodamine-6G chloride excited by a Q-switched, frequency-doubled, Nd:YAG laser. The fluorescence intensity is found to be linear with dye concentration, but not with illumination power density. The fluorescence intensity saturates at laser power densities easily exceeded by short-pulse-duration lasers. A procedure for calibrating and normalizing the raw image data is discussed which relies only on weak absorption and the linearity of fluorescence intensity with concentration. This procedure enables quantitative concentration measurement with pulsed-laser-induced fluorescence.

Keywords:
本文献已被 SpringerLink 等数据库收录！

设为首页 | 免责声明 | 关于勤云 | 加入收藏