Instabilities in the near wake of a rod with an anchored flame

Author

Quinard, J.

Author_Institution

Lab. Recherche en Combustion-Univ. de Provence-Centre St. Jerome, Marseille, France

fYear

1991

fDate

27-31 Oct 1991

Firstpage

60

Lastpage

67

Abstract

Turbulent combustion can involve the interaction of flame dynamics, flow structures and acoustic instabilities and many problems remain to be solved. A study of the anomalous `intrinsic´ instability of premixed flames anchored to a rod shows that this instability results in fact from acoustic forcing of the downstream wake. This is shown by tomographic visualizations and by correlations between pressure fluctuations in the combustion chamber and various signals issuing from laser tomography, laser anemometry and deflectometry in the near wake

Keywords

acoustic applications; anemometry; combustion; flames; flow visualisation; laser beam applications; turbulence; wakes; V-flame instability; acoustic forcing; anchored flame; combustion chamber; deflectometry; downstream wake; laser anemometry; laser tomography; near wake; premixed flames; pressure fluctuations; tomographic visualizations; turbulent combustion; Acoustic measurements; Combustion; Fires; Fluctuations; Gases; Hydrodynamics; Laser theory; Temperature control; Tomography; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation in Aerospace Simulation Facilities, 1991. ICIASF '91 Record., International Congress on

Conference_Location

Rockville, MD

Type

conf

DOI

10.1109/ICIASF.1991.186225

Filename

186225