Campus Units

Mechanical Engineering

Document Type

Article

Publication Version

Published Version

Publication Date

2019

Journal or Book Title

Optics Letters

Volume

44

Issue

8

First Page

2101

Last Page

2104

DOI

10.1364/OL.44.002101

Abstract

The separation of liquid phase and vapor phase laser-induced fluorescence (LIF) signals using tracer species suffers from uncertainties in tracer–fuel coevaporation, as well as a disparity in liquid and vapor signals. This work demonstrates the use of a simple technique, referred to as lifetime-filtered LIF, to help separate the liquid and vapor signals of fuel sprays in oxygen-free environments without the use of added tracers. This is demonstrated for a common aviation fuel, Jet-A, using prompt detection of the liquid phase and time-delayed detection of the vapor phase. A scaled liquid signal subtraction algorithm is also demonstrated for removing vapor phase signal contamination caused by the largest droplets.

Comments

This article is published as Douglawi, Alber, Anthony McMaster, Megan E. Paciaroni, James B. Michael, Benjamin R. Halls, James R. Gord, and Terrence R. Meyer. "Tracer-free liquid–vapor imaging using lifetime-filtered planar laser-induced fluorescence." Optics Letters 44, no. 8 (2019): 2101-2104. DOI: 10.1364/OL.44.002101.

Rights

Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.

Language

en

File Format

application/pdf

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