Investigation of Combustion in Large Vortices
Abstract
This research consists of an experimental study of the time dependent combustion in vortex structures. Large vortices were formed utilizing pulsed flow over a downstream facing step. The technique for simultaneous shadowgraph, chemiluminescence, and laser doppler velocimeter measurements has been developed and is used regularly. For a pressure oscillation of fixed amplitude,the diameter of the vortex grows linearly with time at a rate that increases linearly with the pressure amplitude of the oscillation generating the vortex formation. The onset of chemiluminescence - and we believe combustion - is delayed for several milliseconds, close to our estimates for the chemical time for the systems under study here. Keywords: Vortex burning, Unsteady combustion, Shock enhanced mixing, Supersonic combustion, Hypersonic ramjet.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 15, 1990
- Accession Number
- ADA226791
Entities
People
- Edward E. Zukoski
Organizations
- California Institute of Technology