X-ray Fluorescence Measurements of Turbulent Methane-Oxygen Shear Coaxial Flames (Briefing Charts)
Abstract
Summary: X-ray fluorescence was used to make first of their kind quantitative measurements in a turbulent high-energy density flame. Technique demonstrated on a liquid rocket relevant CH4/O2 shear coaxial flame. Successfully demonstrated the use of both Ar and Kr as X-ray tracers in flames. Required minimal corrections. Ar data had to be corrected for signal trapping and room air Ar background signal. Kr shown to be better tracer: No signal trapping, no room air background signal, & significantly higher fluorescence efficiently resulting in lower tracer concentrations. Obtained quantitative measurements of tracer concentration. Unable to directly back out mixture fraction but showed it is feasible with upgrades to the beamline. Built infrastructure to make flame measurements possible at APS. Significantly decreases cost and time for future flame measurements. Future work should focus on achieving simultaneous multiple tracer measurements and conducting measurements in multi-phase flames and supercritical flames.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2015
- Accession Number
- ADA623067
Entities
People
- Alan Kastengren
- Malissa D. Lightfoot
- Stephen A. Danczyk
- Stephen Alexander Schumaker
Organizations
- Air Force Research Laboratory