On high spatial resolution scalar measurement with LIF - Part 1: Photobleaching and thermal blooming

Authors
Wang, GR Fiedler, HE
Citation
Gr. Wang et He. Fiedler, On high spatial resolution scalar measurement with LIF - Part 1: Photobleaching and thermal blooming, EXP FLUID, 29(3), 2000, pp. 257-264
Citations number
19
Categorie Soggetti
Mechanical Engineering
Journal title
EXPERIMENTS IN FLUIDS
ISSN journal
07234864 → ACNP
Volume
29
Issue
3
Year of publication
2000
Pages
257 - 264
Database
ISI
SICI code
0723-4864(200009)29:3<257:OHSRSM>2.0.ZU;2-C
Abstract
A spatial resolution of about 4 (mu m)(3) of LIF is done in the present wor k. For such measurements, the photobleaching and possible thermal blooming become important because of the very high laser intensity at measuring volu me. The corresponding problems for the scalar measurement, calibration, the influence of laser power and laser dye concentration on photobleaching, an d the measurement of photobleaching are investigated. A simple photobleachi ng model is proposed.