Particle image velocimetry of a nano-second laser-induced breakdown in air

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Velocity field measurements of a laser-induced optical breakdown are presented in this paper. Particle image velocimetry (PIV) was performed over a wide range of probe delays, t0 = 5μs to 2000μs, in order to capture the development of the flowfield induced. The early probe delays provide information about the propagation of the shock induced by the breakdown, showing its rapid weakening as it propagates outwards, inducing velocities of 120m/s at t0 = 5μs and only 60m/s at t0 = 10μs. As the shock propagates outwards, the rarefaction wave forms, leading to the formation of two opposing jets on the top and bottom side of the plasma kernel location. As the jets develop, the ensemble averages reveal that the bottom jet is stronger in this study, eventually leading to the vortex ring ejection against the direction of the incident laser.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
DOIs
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF

Conference

ConferenceAIAA Scitech Forum, 2020
CountryUnited States
CityOrlando
Period1/6/201/10/20

ASJC Scopus subject areas

  • Aerospace Engineering

Fingerprint Dive into the research topics of 'Particle image velocimetry of a nano-second laser-induced breakdown in air'. Together they form a unique fingerprint.

Cite this