Abstract

A simple linear configuration for multi-line femtosecond laser electronic excitation tagging (FLEET) velocimetry is used for the first time, to the best of our knowledge, to image an overexpanded unsteady supersonic jet. The FLEET lines are spaced 0.5–1.0 mm apart, and up to six lines can be used simultaneously to visualize the flowfield. These lines are created using periodic masks, despite the mask blocking 25%–30% of the 10 mJ incident beam. Maps of mean single-component velocity in the direction along the principal flow axis, and turbulence intensity in that same direction, are created using multi-line FLEET, and computed velocities agree well with those obtained from single-line (traditional) FLEET. Compared to traditional FLEET, multi-line FLEET offers increased simultaneous spatial coverage and the ability to produce spatial correlations in the streamwise direction. This FLEET permutation is especially well suited for short-duration test facilities.

© 2020 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Burst-mode femtosecond laser electronic excitation tagging for kHz–MHz seedless velocimetry

Jordan M. Fisher, Michael E. Smyser, Mikhail N. Slipchenko, Sukesh Roy, and Terrence R. Meyer
Opt. Lett. 45(2) 335-338 (2020)

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)

Seedless velocimetry at 100  kHz with picosecond-laser electronic-excitation tagging

Naibo Jiang, Jason G. Mance, Mikhail N. Slipchenko, Josef J. Felver, Hans U. Stauffer, Tongxun Yi, Paul M. Danehy, and Sukesh Roy
Opt. Lett. 42(2) 239-242 (2017)

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 OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA 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 OSA member, or as an authorized user of your institution.

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

Figures (7)

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

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

Tables (1)

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

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

Equations (1)

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

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

Metrics

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

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