Turbulence Regime Characterization For Premixed Combustion

Abstract

Turbulent flow properties are investigated within a premixed turbulent combustion facility. The experimental facility is a blow-down afterburner facility that allows for analysis of premixed propane-air combustion over a range of turbulent inflow conditions. To modulate turbulence levels, a dynamic impinging jet grid turbulence generator is used. This methodology allows for a range of premixed combustion regimes to be probed. Non-reacting turbulent flow properties are investigated with bluff body and trapped vortex flame stabilizers and reacting flow properties are investigated for bluff body stabilized flames. Hotwire anemometry is used to analyze the non-reacting flow conditions resulting for both stabilization configurations. Simultaneous particle imaging velocimetry (PIV) and planar laser induced fluorescence (PLIF) are used to characterize the reacting conditions and visualize the flow-flame field. Some turbulence properties which are investigated include: turbulence fluctuation, length scale, energy spectra, and turbulent kinetic energy. These properties ultimately play a role in determining flame structure and stability, both of which are critical components of modern aerodynamic combustion engines.

Publication Date

1-1-2018

Publication Title

AIAA Aerospace Sciences Meeting, 2018

Issue

210059

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2018-0160

Socpus ID

85044381559 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85044381559

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