Coherent Structures in Turbulent Flames.
Abstract
Diagnostic and data analysis techniques have been used to investigate the structure of turbulent jet reacting flows with well defined initial and boundary conditions. In the transition region of a turbulent jet flame a double-vortex structure has been found: with outer vortices, which may originate from Kelvin-Helmholtz or Rayleigh type instabilities, and inner vortices which are influenced strongly by one or more combustion instability mechanisms. Measurements of mean velocity, turbulence intensity, ionization current, mean temperature and peak frequencies are presented together with data derived from high speed color schlieren photography and laser schlieren spectra.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1979
- Accession Number
- ADA078467
Entities
People
- A. J. Yule
- N. A. Chigier
Organizations
- University of Sheffield