Abstract
An equal optical thickness approximation that greatly simplifies the application and data reduction of the infrared extinction technique for measuring fuel vapor concentrations in sprays is investigated. A general approach is given, with specific results for a 3.39- and a 0.6328-μm-wavelength system. It is shown that the infrared (3.39-μm) drop optical thickness can be approximated by the use of the visible (0.6328-μm) optical thickness for drop size distributions with area mean diameters greater than 20 μm for hydrocarbon fuel sprays.
© 1994 Optical Society of America
Full Article | PDF ArticleMore Like This
J. A. Drallmeier
Appl. Opt. 33(33) 7781-7788 (1994)
Yu-yin Zhang, Takuo Yoshizaki, and Keiya Nishida
Appl. Opt. 39(33) 6221-6229 (2000)
A. R. Chraplyvy
Appl. Opt. 20(15) 2620-2624 (1981)