Abstract

We describe a diagnostic technique for obtaining quantitative, simultaneous, and instantaneous images of temperature and the concentration of the hydroxyl radical OH in turbulent flames. The technique uses a single laser source and a single intensified CCD camera. A stoichiometric premixed flame is used for calibration. We use detailed calculations of laminar flames of similar fuels to estimate the effects of quenching and ground-state population on the OH signal. A factor combining both effects is generated as a function of temperature. We validate the technique by comparing measured temperature and OH number density with calculated values in laminar diffusion flames. Absolute errors of 10–20% and 20–30% are estimated on the measured temperature and OH number density, respectively. The technique is applicable to regions of the flames where the Rayleigh cross section is close to that of air.

© 1994 Optical Society of America

Full Article  |  PDF Article
More Like This
Quantitative planar temperature imaging in turbulent non-premixed flames using filtered Rayleigh scattering

Thomas A. McManus and Jeffrey A. Sutton
Appl. Opt. 58(11) 2936-2947 (2019)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics