Abstract

Femtosecond laser electronic excitation tagging (FLEET) is a molecular tagging velocimetry technique that can be applied in combustion flow fields, although detailed studies of its application in combustion are still needed. We report the applicability of FLEET in premixed CH₄–air flames. We found that FLEET can be applied in all of the combustion areas (e.g., the unburned region, the burned region and the reaction zone). The FLEET signal in the unburned region is significantly higher than that in the burned region. This technique is suitable for both lean and rich CH₄–air combustion flow fields and its performance in lean flames is better than that in rich flames.

© 2018 The Author(s)

Selective two-photon absorptive resonance femtosecond-laser electronic-excitation tagging velocimetry

Naibo Jiang, Benjamin R. Halls, Hans U. Stauffer, Paul M. Danehy, James R. Gord, and Sukesh Roy
Opt. Lett. 41(10) 2225-2228 (2016)

Vibrationally excited hydroxyl tagging velocimetry

Nathan Grady and Robert W. Pitz
Appl. Opt. 53(31) 7182-7188 (2014)

Three-component flow velocity measurements with stereoscopic picosecond laser electronic excitation tagging

Colter Russell, Naibo Jiang, Paul Danehy, Zhili Zhang, and Sukesh Roy
Appl. Opt. 60(15) C121-C130 (2021)

FLEET velocimetry for combustion and flow diagnostics

Nicholas J. DeLuca, Richard B. Miles, Naibo Jiang, Waruna D. Kulatilaka, Anil K. Patnaik, and James R. Gord
Appl. Opt. 56(31) 8632-8638 (2017)

Femtosecond laser electronic excitation tagging for quantitative velocity imaging in air

James B. Michael, Matthew R. Edwards, Arthur Dogariu, and Richard B. Miles
Appl. Opt. 50(26) 5158-5162 (2011)