Multi-parameter, kHz rate spectrally resolved NO PLIF in a supersonic jet
Abstract
Quantitative, high-bandwidth measurements of temperature, pressure, and velocity are needed to characterize high-speed flows and validate numerical simulations. To that end, this work demonstrates rapid, multi-parameter spectrally resolved planar laser-induced fluorescence (SR-PLIF) for spatially resolved, calibration-free measurements of these three key quantities using the gamma-bands of nitric oxide near 225.33 nm. The SR-PLIF technique was validated from 295-420 K and 3.48-20.4 kPa using a static gas cell and exhibits an average temperature and pressure error of 2% and 4%, respectively. The diagnostic was then used to study an underexpanded jet at rates up to 1 kHz and a spatial resolution of 220µm, with results showing favorable agreement with numerical simulations.
Fields of Study & Subjects
Combustion and flame dynamics
Plasma and Flow Control in Aerodynamics
Computational Fluid Dynamics and Aerodynamics
Publication details
- Journal / source
- Optics Letters
- Publisher
- Optica Publishing Group
- Volume
- 51
- Issue
- 4
- Pages
- 957–957
- Publication date
- 5 January 2026
- Language
- EN