Sensitivity and relative error analyses of soot temperature and volume fraction determined by two-color LII

The sensitivity and relative sensitivity of soot temperature and soot volume fraction inferred from the two-color laser-induced incandescence technique to different variables were systematically investigated to quantitatively understand how the detection wavelengths affect the behavior of the detect...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2009-09, Vol.96 (4), p.623-636
Main Authors: Liu, F., Snelling, D. R., Thomson, K. A., Smallwood, G. J.
Format: Article
Language:English
Subjects:
Biological and medical applications
Engineering
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Heat transfer
Incandescence
Infrared
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Lasers
Mathematical analysis
Mathematical models
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Optics
Shot noise
Soot
Thermal instruments, apparatus and techniques
Thermal radiation
Volume fraction
Wavelengths
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The sensitivity and relative sensitivity of soot temperature and soot volume fraction inferred from the two-color laser-induced incandescence technique to different variables were systematically investigated to quantitatively understand how the detection wavelengths affect the behavior of the detection system. The effects of signal shot noises on the derived soot temperature and soot volume fraction were also analyzed. The detection wavelengths are in general between about 400 nm for the lower band and near infrared for the upper one. Numerical calculations were conducted for seven detection wavelength selections commonly used in two-color laser-induced incandescence experiments reported in the literature. To achieve a better accuracy for soot temperature and volume fraction measurements, it is desirable to use a shorter lower detection wavelength and a longer upper detection wavelength in the spectral range of about 400 nm to near infrared. The lower detection wavelength has a stronger impact on the detection system performance than the upper one. The sensitivity and shot noise analyses are valuable tools to assess the relative performance of different detection wavelengths and should be used in combination with other considerations to design an optimal detection system in a two-color laser-induced incandescence experiment.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-009-3560-6