FLEET velocimetry measurements in the ONR-UTA arc-jet wind tunnel

Vijay Gopal, Daniel Palmquist, Luca Maddalena, Laura E. Dogariu, Arthur Dogariu

Research output: Contribution to journalArticlepeer-review

Abstract

This manuscript presents and discusses the very first successful application of the Femtosecond Laser Electronic Excitation Tagging (FLEET) velocimetry technique in an arc-jet flow. Specifically, one-dimensional, quantitative, FLEET velocimetry data were obtained in the effort to characterize the 1.6 MW ONR-UTA arc-jet plasma wind tunnel, Leste, housed at the Aerodynamics Research Center of the University of Texas at Arlington. While the FLEET technique has been used in other types of high-speed wind tunnel facilities, application to flows with high background radiation, such as arc-jets, has never been demonstrated before this work. The high background emissions posed concerns on the feasibility of performing FLEET velocimetry measurements. However, this work demonstrates how these concerns were addressed and presents the first successful application of the FLEET technique in arc-jet flows. The FLEET emissions in the arc-jet plume were successfully imaged, and a significant spatio-temporal variation in the tag’s displacement was observed. For the selected operational condition in this study, the average measured gas velocity in the arc-jet plume was 1.78 km/s. Graphic abstract: [Figure not available: see fulltext.].

Original languageEnglish (US)
Article number212
JournalExperiments in Fluids
Volume62
Issue number10
DOIs
StatePublished - Oct 2021

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

Fingerprint

Dive into the research topics of 'FLEET velocimetry measurements in the ONR-UTA arc-jet wind tunnel'. Together they form a unique fingerprint.

Cite this